Window Replacement in Nashville, Tennessee

In Nashville, whether a window job needs a building permit depends on what changes. Metro Codes' published list says "windows changing style or size" need a permit for one- and two-family homes, while glass replacement does not (Metro Codes permit list) ³. A same-size, same-style swap is not named on that list, so it is a question to put to Metro Codes before work starts ¹³.

Two more things matter. If the house sits in a historic preservation or landmark overlay, exterior repairs and alterations need a Preservation Permit from the Metro Historic Zoning Commission, and it must be issued before a building permit (Metro Historic Zoning Handbook) ⁵. And Davidson County is one of nine Tennessee counties where the state requires a home improvement license for residential remodeling priced from $3,000 to $24,999 (Board: home improvement contractor) ⁶.

Do you need a permit to replace windows in Nashville?

Metro's general rule is broad. Its hubNashville answer says building permits are required "whenever someone seeks to construct, alter, repair, enlarge, move or demolish any building or structure or part thereof" (When do I need a building permit?) ¹. A second answer carves out maintenance: normal maintenance repairs typically need no permit, including "glazing of windows and doors," painting and minor repairs, citing Metro Code 16.28.030 (When is a permit not required?) ².

The Department of Codes and Building Safety's list of projects that may or may not need a permit, last revised April 4, 2011, is more specific for one- and two-family dwellings (Metro Codes permit list) ³:

The list is old and does not name a same-size window replacement, so ask Metro Codes (or have your installer ask) how your job is classed. Bedroom windows deserve care: the article on egress window requirements explains why an escape opening should not shrink.

How permits are issued, from Metro's pages ¹⁴:

• Who. Metro says it issues permits to contractors who hold a license and to property owners doing their own repairs or construction ¹.
• Where. Registered contractors can apply through the ePermits system; Metro's answer tells homeowners to email the Zoning Help Desk ([email protected]) to request a permit application ¹⁴.
• Fees. Fees for residential remodeling are based on the actual value of the improvements; the Building Permit Process page sends fee questions to the Zoning Help Desk (Building Permit Process) ⁴.

Ask each installer who quotes the job whether a permit is needed and, if so, who pulls it. The article on whether you need a permit to replace windows explains why answers differ from city to city.

Historic overlays and the Metro Historic Zoning Commission

The Metro Historic Zoning Commission (MHZC) reviews work in Nashville's historic overlays. Its handbook says that if your property has an historic overlay, you need a Preservation Permit before certain changes, which changes depend on the overlay type, and "The preservation permit must be issued before a building permit will be issued" (Metro Historic Zoning Handbook) ⁵.

Window work is an exterior alteration, and the handbook's permit table matters here ⁵:

• Historic preservation and historic landmark overlays. Exterior repairs and alterations need a Preservation Permit.
• Neighborhood conservation overlays. The handbook calls this "the least restrictive type," guiding only new construction, additions, demolitions and moving of structures; exterior repairs and alterations are not on its list for these overlays.

The handbook adds that there is no fee for a Preservation Permit, though Codes charges for related permits; that for some routine projects the commission has pre-approved, staff generally issue the Preservation Permit "within 4 business days" of a complete application; and that the commission meets on the third Wednesday of each month ⁵. It asks owners to contact the MHZC first, at [email protected] or 615-862-7970, to confirm whether review is needed ⁵. If your house is in an overlay, ask any installer whether the windows they quote fit the overlay's design guidelines before you sign. A homeowners association may have its own rules too; check them. The article on historic home window replacement covers repair versus replacement.

Who may do the work

Two state licenses may apply in Nashville, depending on the job's total price. The Tennessee Board for Licensing Contractors says "A Home Improvement license is required for residential remodeling projects from $3,000 to $24,999; however, this only applies to the counties adopting the law," and lists Davidson County among the nine (Board: home improvement contractor) ⁶. The board says home improvement includes "repair, replacement, remodeling, alterations, or additions to any land or residential building" ⁶. For projects of $25,000 or more, the board says a contractor's license is required before contracting, including bidding, when acting as a prime contractor (Board: contractor license) ⁷.

Questions to ask, then check in the state's Verify a License search ⁸:

• What is the total price of the job, and which state license fits that total?
• Which state license does the installer hold, home improvement contractor or contractor, and does the license number on the quote match the company name?

The Tennessee page explains both licenses in more detail, and the guide on how to choose a window installer covers references and contracts.

Nashville's climate and the glass

ENERGY STAR places Davidson County in its South-Central climate zone (ENERGY STAR climate zone finder) ¹⁰. There, a window qualifies under the Version 7.0 criteria with a U-factor of 0.28 or less and a solar heat gain coefficient (SHGC) of 0.23 or less, plus an air leakage limit of 0.3 cubic feet per minute per square foot (ENERGY STAR criteria) ⁹.

Nashville has both seasons. NOAA's 1991-2020 normals for Nashville International Airport show a summer (June to August) average high of 89.7°F with about 54 days a year at 90°F or more, and about 66 days a year with a low of 32°F or colder (NOAA climate normals) ¹¹. Heating degree days (3,364) still outnumber cooling degree days (1,873), so both the U-factor and the SHGC count ¹¹. Rain is steady through the year, 50.51 inches in all, which makes flashing and sealing around a new window as important as the glass ¹¹.

The energy-efficient windows explainer and the article on low-E glass go deeper.

What window replacement costs

This article does not quote a Nashville price, because the cost surveys it relies on report national figures. As a national reference, Fixr reports an average of about $800 per window, typically $450 to $1,200 (updated January 21, 2026) ¹². The window replacement cost guide compares several national surveys. Your written quotes are the local number that matters, and their total also tells you which state license applies ⁶⁷.

Getting quotes in Nashville

Get two or three written quotes that name the brand and series, the NFRC-rated U-factor and SHGC, full-frame or insert installation, the state license number, and who handles any Codes permit or Preservation Permit. The article on how to compare window quotes shows how to line them up. When you are ready, you can compare quotes from window installers in Nashville.

About these figures

• ¹ Official record: hubNashville answer When do I need a building permit? dated July 17, 2024 (scope of permits, issued to contractors with a license or to owners, ePermits, Zoning Help Desk), checked October 27, 2026.
• ² Official record: hubNashville answer When is a permit not required? dated August 30, 2018 (normal maintenance including glazing of windows and doors, Metro Code 16.28.030), checked October 27, 2026.
• ³ Official record: Metro Codes list of projects which may or may not require a permit, issued January 15, 1989 and revised April 4, 2011 (window, glass, guard, storm window and door rows for one- and two-family dwellings), checked October 27, 2026.
• ⁴ Official record: Metro Codes Building Permit Process page (ePermits for registered contractors, Zoning Help Desk, remodeling fees based on value), checked October 27, 2026.
• ⁵ Official record: Metro Historic Zoning Handbook revised 2023 (overlay types, Preservation Permit before building permit, exterior alterations in preservation and landmark overlays only, no fee, 4 business days for pre-approved projects, third-Wednesday meetings, contact), checked October 27, 2026.
• ⁶ Official record: Tennessee Board for Licensing Contractors home improvement page ($3,000 to $24,999 in adopting counties, nine counties including Davidson, definition), checked October 27, 2026.
• ⁷ Official record: Tennessee Board for Licensing Contractors contractor page (license for projects of $25,000 or more), checked October 27, 2026.
• ⁸ Official record: Tennessee Verify a License or Credential search, checked October 27, 2026.
• ⁹ Official record: ENERGY STAR Version 7.0 window criteria (South-Central U-factor 0.28 and SHGC 0.23; air leakage 0.3), checked October 27, 2026.
• ¹⁰ Official record: ENERGY STAR county climate zone list (Davidson County, South-Central), checked October 27, 2026.
• ¹¹ Official record: NOAA 1991-2020 normals for Nashville International Airport (summer high 89.7°F, about 54 days at 90°F or more, about 66 days at 32°F or below, 3,364 heating and 1,873 cooling degree days, 50.51 inches of precipitation), checked October 27, 2026.
• ¹² Reported: Fixr national window replacement cost (about $800 per window, typically $450 to $1,200; updated January 21, 2026), checked October 27, 2026.