Landmark and historic district window rules in Chicago

This page keeps three things apart: what Chicago requires, what it recommends, and what it does not publish at all. Where the city is silent, this page says so rather than filling the gap. How we source everything is on our methodology page.

What landmark status changes, and what it does not

The fear is usually worse than the rule. Landmark designation does not add a permit, or a hearing for ordinary window work. It adds a reviewer with a published standard, and it unsettles the permit exemption you might otherwise have relied on.

Question	What the city publishes
Is there a separate landmark permit?	No. "No additional City permits are required for Landmark buildings. The Commission simply reviews permits as part of the normal building permit process."
Who routes the application?	The Department of Buildings. It "routes building permit applications to Commission staff for review as part of the building permit process."
How long does review take?	The Commission "annually reviews some 2,000 permits for Landmark properties, most of which are approved in one day."
Does window work go to a public meeting?	It is not on the published list of project types that do. See the list below
Do the no-permit exemptions still apply?	Unsettled. The city says only that they "may not apply" and does not enumerate which survive
What is being judged?	Whether the work "will not adversely affect any significant historical or architectural features of the improvement or the landmark district"

Commission on Chicago Landmarks permit application submission requirements, document dated December 5, 2024, and the Commission's published questions and answers. Both read at chicago.gov, 2026-08-11.

The gap nobody writes down, stated plainly

Commission review is described as part of the building permit process. Exempt work has no building permit application to route. The city never explains what happens in that case, and its whole published answer on the point is the hedge plus an instruction to contact the Historic Preservation Division. That is our reading of two documents that do not join up, not a city statement, and it is why "may not apply" is the wording rather than a rule.

The consequence costs you one phone call. On landmark property, ask before you order windows, not after the deposit is paid. Historic Preservation Division, Department of Planning and Development, 312.744.3200, landmarks@cityofchicago.org.

Two designations, two very different consequences

This is the most common confusion in Chicago, and it runs both ways: owners assume a National Register listing restricts them when it does not, and assume a city designation does not exist when it does.

	National Register of Historic Places	Chicago Landmark or landmark district
Who designates	Federal, through the National Park Service	The City of Chicago, through the Commission on Chicago Landmarks
Restricts a private owner's windows?	No. "Listing in the National Register places no federal restrictions or requirements on a private property owner"	Yes, through review. The Commission reviews permit applications for work on designated and proposed landmarks and in landmark districts
When it does bite	Where a project "receives Federal assistance, usually funding or licensing/permitting"	On any routed permit application, and the exemptions "may not apply"
Can a property have both?	Yes, and plenty do. Neither one tells you about the other, so check both

National Park Service, National Register frequently asked questions, read 2026-08-11. Commission on Chicago Landmarks submission requirements and the Historic Preservation Division permit review page, read at chicago.gov 2026-08-11.

Where Chicago's housing stock actually sits

Fifteen bungalow historic districts are on the National Register under the Chicago Bungalows Multiple Property Submission: Auburn Gresham, Avalon Park, Brainerd, Falconer, Gage Park, Hermosa, North Mayfair, Portage Park, Rogers Park Manor, Schorsch Irving Park Gardens, South Park Manor, South Shore, Talman West Ridge, West Chatham and Wrightwood. On the federal rule above, that listing on its own restricts nothing about your windows.

Building type	National Register presence (no restriction by itself)	Chicago Landmark district (triggers review)
Chicago bungalow	Meaningful. 15 named bungalow districts across the Bungalow Belt	Not found among the Chicago Landmark districts we reviewed. Treat that as our reading, not an all-clear: the city's own listings page says it shows "just a portion of the designations"
Two-flat and three-flat	Present inside neighborhood districts	Real. The East Village District is a designated district of exactly this stock
Greystone	Present inside neighborhood districts	Real, by the same mechanism
Lakefront high-rise condominium	Present	Real. 860-880 Lake Shore Drive and the East Lake Shore Drive District both appear on the city's landmarks list

Chicago Listings on the National Register of Historic Places, as of October 31, 2025; the Chicago Landmarks alphabetical listings page; the East Village District designation report. All read at chicago.gov, 2026-08-11. The row verdicts are our reading of those documents.

What the Commission is actually looking at

Not your whole house. The Commission's questions and answers narrow it: "For most landmark districts, the significant features typically are the exterior building elevations visible from the public right-of-way except regarding work involving demolition."

Designation reports say the same thing property by property. The East Village District report recommends as significant features "all exterior building elevations, including rooflines, visible from public rights-of-way", which is the language that puts a street-facing bay window squarely inside review and leaves a rear-wall bedroom window in a different position.

Do not turn that into a rule you can act on alone. The city's words are "most" and "typically", and your district's own designation report is what governs your building. It does tell you where the argument will be, and on a two-flat or greystone that is the projecting street bay.

One exact fact, and its exact limits

The same East Village report, describing buildings as they stood at designation, states: "Some original double-hung window sash has been replaced with later double-hung or single-pane sash", and classes that among "changes considered minor and reversible". That is the city treating sash replacement as lower-stakes than, say, losing a cornice, while assessing whether a district still holds its character. It is not permission. It is not an approval standard and it is not about your permit. What it is good for: the Commission's own documents do not treat a window as the untouchable element of a district building.

Commission questions and answers, and the East Village District designation report. Read at chicago.gov, 2026-08-11.

The standard your replacement window is judged against

There is no adopted Commission policy on windows. Its publications carry adopted policies for siding and for dormers in certain districts, none for windows. What governs is the Guidelines for Alterations to Historic Buildings and New Construction, adopted March 4, 1992 and still the published version. On windows it is direct, and it starts by telling you not to buy anything:

WINDOWS. Windows are frequently the most difficult aspect of any rehabilitation project. The first and best answer to the question of how to treat windows is not to replace them but rather to retain and repair the existing sash and frames. Where this is not possible, replacing only deteriorated parts an new sill or a sash for instance is preferable to total replacement. If total replacement is unavoidable, the replacement windows must match the historic windows in design and operation, material, glass size, muntin arrangements, profiles, and trim such as brick mold and sill. Seemingly minor changes in these elements can greatly alter the appearance of an historic building.

Quoted exactly as the city prints it, including the missing words in the second sentence. Read at chicago.gov, 2026-08-11.

Six elements have to match. What each means when you are reading a quote, because a standard replacement estimate does not describe any of them:

What must match	What that means on a quote
Design and operation	A double-hung stays a double-hung. This is also the test that decides whether the work is still in-kind for permit purposes
Material	The frame and sash material of the historic window. A quote naming a material without addressing this has not addressed the standard
Glass size	The size of each pane, not just the unit. Thicker modern frames shrink the glass, which is where a like-for-like replacement stops looking like one
Muntin arrangements	The divided-light pattern. On many Chicago bungalow art glass windows those muntins are metal rather than wood
Profiles	Cross-section shapes of sash, meeting rails, mullions and muntins. This is why the Commission asks for sections, not just elevations
Trim such as brick mold and sill	The surround, which on a greystone is carved limestone and part of the ornament rather than a trim piece

The six elements are the city's, from the 1992 Guidelines, read at chicago.gov 2026-08-11. The explanation column is our reading, not city text. The metal muntin point comes from the National Park Service nomination for the Portage Park Bungalow Historic District, read 2026-08-11.

The city rejects the energy argument as an automatic reason to replace

This is the paragraph that will not appear in any sales presentation, and it is the city's own adopted text:

Often, window replacement is dictated by concerns for energy conservation, particularly replacing single-glazed sash with double-glazed sash. A wide variety of double-glazed units are available, some designed especially for historic buildings. However, properly weather-stripped, single-glazed sash can greatly reduce or eliminate air infiltration between sash and frame where most energy is lost. The cost of weather stripping is nominal compared to the price of replacement windows, yet the effect can be considerable.

1992 Guidelines, read at chicago.gov, 2026-08-11.

Read it for what it is. It is guidance for historic property, not a citywide rule, and it does not say double glazing is refused in a landmark district. It says the city expects repair and weather stripping to have been considered first, and it names double-glazed units "designed especially for historic buildings" as a real category.

What you submit

Window work falls under the Commission's alterations checklist, which names "siding, masonry, roofing, windows, doors, skylights" and much else in one list. There is a baseline for all alterations, then an addendum specific to new windows.

Stage	What the Commission asks for, in its own words
Existing conditions	"Information on existing conditions, such as photographs, details, drawings and/or material samples", plus archival or comparative material where the historic conditions are unclear
Proposed work	"Information on the proposed work, such as specifications, details, product literature, shop drawings, manufacturer's cut sheets, sections, and/or other drawings; and material samples and/or mock-ups"
On staff direction, some projects	"location diagram, site plan, replacement unit count, elevations, and/or other drawings to identify the location and extent of the proposed work; a licensed engineer's report and construction phasing information"
Code assumptions	"Any building or zoning code issues/assumptions, if applicable, regarding the proposed work"
New windows, the addendum	"Large-scale side-by-side drawings of the existing and proposed windows for each window type, including elevations, cross and longitudinal sections, and details, as necessary, all dimensioned and to scale. Sections including profiles of sashes, any mullions or muntins, meeting rails, sills, brick molds, and headers/lintels"
Two reliefs worth knowing	"If the existing windows are modern replacements, drawings of the existing windows may not be required." And manufacturer's cut sheets "may be accepted in lieu of drawings of the proposed windows", depending on their scale, completeness and level of detail
Possible extras	"In some cases, Commission staff may request submission of mock-ups or sample window unit." For skylights, visibility from the public way, extra photo views, roof plans and on-site mock-ups may be required

Commission on Chicago Landmarks permit application submission requirements, dated December 5, 2024, read at chicago.gov 2026-08-11.

Two more lines from the same document that change how you plan the job:

• Incomplete means stalled, not refused. "The Commission staff will notify applicants of incomplete submittals and may defer review of an application until the submittals are complete." A missing section drawing parks your application, which is worse than a refusal if windows are already on order.
• What you file can be released. "Please be advised that the documents, including plans that an applicant submits are subject to disclosure by the city, including pursuant to a request made under the Illinois Freedom of Information Act."

Who produces those drawings matters to your quote

Large-scale side-by-side drawings for each window type, with sections showing sash and muntin profiles, is drafting work. Some contractors and suppliers handle it, some do not, and some price it as an extra after the contract is signed. Ask a specific question rather than "do you deal with landmarks": who prepares the existing and proposed window drawings and sections for the Commission submittal, and is that in this price?

The pre-permit review, which is free advice the city is offering

The Commission asks you to come and talk to it before you file. Its own wording: "The Landmarks Commission encourages applicants to seek its advice and guidance before filing a permit application. A pre-permit submission can clarify landmark requirements and help expedite the commission's review during the application process."

The first pass is light. The Commission's pre-permit submission requirements say that "Typically, minimal information (such as photographs, plat of survey, description of proposed work, etc.) is required for a first review by Commission staff", so photographs and a description of the work, before you have paid for drawings or ordered anything.

The recommendation. On landmark property this is the first call, ahead of the showroom visit. It is encouraged rather than required and costs nothing but the time to take photographs, and it gives you something specific to hand every contractor who quotes, which turns four estimates for different jobs into four estimates for the same one.

Historic Preservation Division permit review page and the Commission's pre-permit submission requirements, read at chicago.gov 2026-08-11.

The Permit Fee Waiver, named and not priced

A Permit Fee Waiver may be offered on designated Chicago Landmark property. The city's form describes it as available "for all individually landmarked buildings as well as all buildings and new construction in landmark districts", and limits it: "Only fees for permits for which Commission approval is required can be waived."

No amounts, processing times or application windows appear on this page. Those belong to the city, they change, and this site publishes no figure attached to a programme that saves you money. The city's own page carries the current terms: the Permit Fee Waiver form and instructions.

What is safe to publish, because each is a rule stated in words rather than a number:

• The order is unforgiving. "Permit fee waiver applications are not accepted after the permit has been issued." A homeowner who files for the window permit first has given the waiver up.
• It runs through City Council. "A Permit Fee Wavier must be introduced at one City Council meeting, referred to Committee, and then passed by the City Council at subsequent meeting and published before it is valid." The typo is the city's. Plan for that sequence to take real time.
• It is a four-document application: the Permit Fee Waiver Form, personal profile information, an Economic Disclosure Statement, and an affidavit of child support compliance.
• Whether it reaches a routine window permit is unresolved. It covers permits "for which Commission approval is required", and the Commission reviews all landmark permit applications. Whether a staff-level window review satisfies that phrase is answered by neither document, and we will not join them up for you.

Permit Fee Waiver form and instructions, read at chicago.gov 2026-08-11.

How to check whether your address is landmark property

There is no single-address instant lookup on chicago.gov. We looked for one. What exists is three published instruments and a phone number, and the phone number is what the city points people to.

Instrument	What it gives you	The limitation worth knowing
Chicago Landmark Address List (PDF, June 2026)	Street name, address range and landmark name, for individual landmarks and districts. Rows read "E. 8th St. | 68 thru 98 (evens) | Historic Michigan Boulevard District"	The closest thing to an address check the city publishes, but a long PDF searched by eye, listing ranges rather than exact addresses
Chicago Landmark Name List (PDF)	Every designated landmark and district by name	Useful only once you know the district name
Chicago Historic Resources Survey	A survey completed in 1995 covering buildings built before 1940, which identified 17,371 properties of historic or architectural importance, with date, architect, style and landmark status	Two traps. Its search form takes architect, community, street name, style and year, so it searches by street and not full address. And a survey listing is not landmark designation
Historic Preservation Division, Department of Planning and Development. 312.744.3200, landmarks@cityofchicago.org	A direct answer for your address	None worth reporting. This is the route the city's own permit pages send you to

All read at chicago.gov 2026-08-11. The survey's search fields were read from the form itself rather than from a description of it. Links: the address list and the survey search. Appearing in that survey carries no review requirement at all.

You may not need any of this

This site is paid a referral fee when a homeowner asks to be matched with a window contractor, set out in full on how we make money. So it is worth saying clearly where this page does not apply to you.

• If your property is not a designated or proposed Chicago Landmark and is not in a district, none of this page governs you. Go back to the permit question, where an in-kind replacement in the existing openings of a residential building up to four stories above grade is on the city's no-permit list.
• A National Register listing on its own restricts nothing. If that is all you have, you are not in the review process described here. The federal wording is quoted above.
• You may not need replacement windows. The city's adopted guidance for historic buildings puts retaining and repairing the existing sash and frames first, replacing deteriorated parts rather than whole units second, and says weather stripping costs little against the price of replacement windows while the effect "can be considerable". That is Chicago's own text, and it points the opposite way from the sales conversation.
• A single failed unit is not a whole-house job. Repairing an existing window and replacing glass in an existing sash are both on the city's no-permit list in any building at any height, though on landmark property the "may not apply" caveat sits over that too.

1992 Guidelines and the Guide to Building Permits exterior worktype page, both read at chicago.gov 2026-08-11.

What Chicago does not publish, and we will not guess

Six gaps. In each one, a confident answer would be an invention, and anybody telling you the answer is either reading something we could not find or making it up.

• Which permit exemptions survive landmark status. The city's only statement is "may not apply". It enumerates nothing and its instruction is to contact the Historic Preservation Division.
• Whether landmark property may use the Express Permit Program for windows. The word landmark appears zero times across the programme's window instructions, its terms and conditions, and the programme overview. The city publishes nothing either allowing or excluding it, so assume nothing in either direction.
• Whether the fee waiver reaches a routine window permit. Two documents that do not resolve against each other, described above.
• Any window-specific adopted Commission policy. There is not one. Adopted policies exist for siding and for dormers in certain districts. Windows are governed by the 1992 Guidelines instead.
• Whether a specific product is acceptable. No published allow list of materials, glazing or manufacturers exists. That is decided on your submittal by Commission staff, which is what the pre-permit conversation is for.
• A current count of landmark districts. The city's open data for districts was last updated in 2011 and its newest designation is from 2009, so it is stale. We publish no total rather than a wrong one.

The order of operations, and what to ask

Work top to bottom. Each step is cheap, and each one can make the next unnecessary.

• One. Establish designation. Address list first, then one call to confirm. Before the showroom visit, not after.
• Two. Ask whether repair is possible before pricing replacement. The city's adopted guidance puts this first.
• Three. Get a pre-permit staff read. Photographs, plat of survey, description of the work. No drawings, no deposit, no order.
• Four. Only then price the work, with the staff read in hand so every quote describes the same job.
• Five. Settle who prepares the submittal drawings and sections, and whether it is in the price.
• Six. If a fee waiver is in play, deal with it before any permit is issued.

Four questions worth asking out loud before you sign anything:

• Is my property a designated or proposed Chicago Landmark, or in a district, and who confirmed that?
• Of the six elements the 1992 Guidelines require a match on, which does the proposed unit not match?
• Who prepares the side-by-side drawings and the profile sections, and is that in this price?
• If the sash can be repaired instead, what would that cost, and why is replacement the better answer here?

Where to go next

• Do I need a permit to replace windows in Chicago? The exemption lists, the in-kind test and the four-story line, quoted in full.
• The Express Permit Program, step by step, for jobs that do need a permit: eligibility, uploads, contractor class and the binding terms.
• The condo and high-rise page, for who owns the window in a Chicago condominium under the association declaration. That is a separate question from landmark review and it can stack on top of it, which is why a landmark high-rise has two approvals to clear.
• The permits and rules hub, for everything this site publishes about Chicago window permits.

Sources

Read at chicago.gov on 2026-08-11: work not requiring a building permit, exterior; Commission on Chicago Landmarks permit application submission requirements, dated December 5, 2024; the Commission's questions and answers; the Guidelines for Alterations to Historic Buildings and New Construction, adopted March 4, 1992; the Historic Preservation Division permit review page; the pre-permit submission requirements; the Permit Fee Waiver form; the Chicago Landmark Address List, June 2026; the Chicago Historic Resources Survey search; the Chicago Landmarks listings page; the East Village District designation report; and the city's list of Chicago listings on the National Register of Historic Places as of October 31, 2025. Read at the National Park Service on 2026-08-11: the National Register frequently asked questions, and the Portage Park Bungalow Historic District nomination. No competitor page, contractor blog, forum or search-engine summary was used as a source.

If you want quotes that hold up against the standard on this page, the form below passes your details to an independent licensed window contractor working in your part of Chicago. What that relationship is, and is not, is set out on the about page.

Straight answers

Questions Chicago homeowners ask

Does landmark status mean I need a second permit for my windows?

No. The city states it plainly: "No additional City permits are required for Landmark buildings. The Commission simply reviews permits as part of the normal building permit process." What landmark status adds is a reviewer, not a permit. The Department of Buildings routes building permit applications to Commission on Chicago Landmarks staff as part of the ordinary process, and the same city document says the Commission "annually reviews some 2,000 permits for Landmark properties, most of which are approved in one day." Read at chicago.gov 2026-08-11.

I am in a landmark district. Do the no-permit exemptions still cover my window swap?

Chicago does not answer that, and this page will not answer it for the city. Directly under its exemption lists the city writes: "These exceptions may not apply to work on a property that is a proposed or designated Chicago Landmark or part of a proposed or designated Chicago Landmark district. For more information, contact the Historic Preservation Division in the Department of Planning and Development." The hedge is the city's own word, "may". It never publishes which exemptions survive landmark status. So the exemption is unsettled on landmark property, and the city's own instruction is to ask: Historic Preservation Division, 312.744.3200, landmarks@cityofchicago.org. Read at chicago.gov 2026-08-11.

Will my window application go to a public meeting?

Probably not, though the city never says so in those words. The Commission publishes a list of project types that require Permit Review Committee or full Commission review, and it covers new infill construction, garages on corner properties, additions and dormers visible from the public way, signage needing City Council approval, driveways and curb cuts, demolitions of 40 percent or more, and anything staff refer up for "unusual conditions" or non-compliance with the Guidelines. Window replacement appears nowhere on that list. Our inference, labelled as an inference: routine window work is handled at Commission staff level unless staff refer it up. The city never states "windows are staff-level", so we do not pretend it does. Read at chicago.gov 2026-08-11.

Can I put standard replacement windows in a landmark district building?

There is no published allow list, and there is no adopted Commission policy on windows at all. What governs is the Guidelines for Alterations to Historic Buildings and New Construction, adopted March 4, 1992, which say that where total replacement is unavoidable "the replacement windows must match the historic windows in design and operation, material, glass size, muntin arrangements, profiles, and trim such as brick mold and sill." That is a specification, and a standard replacement quote does not describe it. Whether a specific product satisfies it is decided by Commission staff on your submittal, which is exactly why the Commission invites a pre-permit conversation before you file. Read at chicago.gov 2026-08-11.

What do I actually have to submit for window work?

Window work sits under the Commission's alterations checklist: information on existing conditions such as photographs, details, drawings or material samples, plus information on the proposed work such as specifications, product literature, shop drawings, cut sheets and sections. The new windows addendum asks for "Large-scale side-by-side drawings of the existing and proposed windows for each window type, including elevations, cross and longitudinal sections, and details", with sections showing profiles of sashes, mullions or muntins, meeting rails, sills, brick molds and headers or lintels. Two reliefs: if the existing windows are modern replacements, drawings of them may not be required, and manufacturer cut sheets may be accepted in place of drawings of the proposed windows. Read at chicago.gov 2026-08-11.

My house is in a National Register historic district. Does that restrict my windows?

By itself, no. The National Park Service states it directly: "Listing in the National Register places no federal restrictions or requirements on a private property owner. You may do with the property as you wish, within the framework of local laws or ordinances." Federal listing bites only where a project receives federal assistance, funding or licensing. Chicago Landmark designation is a different thing with different consequences, and a property can carry either, both or neither. Fifteen bungalow historic districts across the Bungalow Belt are on the National Register, so this distinction reaches a lot of Chicago homeowners. Check for local designation separately. National Park Service and chicago.gov, both read 2026-08-11.

How do I find out whether my address is in a landmark district?

There is no instant single-address lookup on chicago.gov. The closest instrument is the Chicago Landmark Address List, a PDF organized as street name, address range and landmark name, covering individual landmarks and districts, with rows that read like "E. 18th St. | 205 thru 315 (odds) | Prairie Avenue District". There is also a Landmark Name List, useful once you know the district name, and a separate Chicago Historic Resources Survey whose search form takes architect, community, street name, style and year, so it searches by street rather than full address. Watch that last one: a survey listing is not landmark designation. The reliable answer is the Historic Preservation Division at 312.744.3200 or landmarks@cityofchicago.org. Read at chicago.gov 2026-08-11.