Window Replacement in Nashville: License, Contract and Glass by County

By the ClearView editorial team · Sources read on 2026-10-22

Read time about 12 minutes

The short answer

Your county decides which license a window contractor must hold. In Davidson County the Home Improvement license covers projects from $3,000 to $25,000; above that a Contractor's license is required. Rutherford and Robertson counties are on the list we read; Williamson, Sumner, Wilson and Cheatham are not. The contract must be in writing, include the contractor's license number, and carry the statutory notice above your signature. At or before signing, a deposit above one third of the price is a prohibited act, with two exceptions in the code. Permits are issued by the local building department; Metro Nashville's list does not have a row for a like-for-like window replacement, so you must ask Metro Codes for your address. Suburban jurisdictions have their own rules, which we did not read.

Three lines decide a Nashville window job: the county decides whether a Home Improvement license is required for a job between 3,000 and 25,000 dollars, Tennessee code bars a deposit above one third of the price at signing, and the ENERGY STAR glass zone changes at the county line — Your county, your deposit, your glass zone: the three lines behind every Nashville bid.

On this page (10 sections)

Which license depends on your county line
What a Tennessee home improvement contract has to say
What Metro's permit list says about windows
Glass for a metro with two zones
The money: what is not subsidized in 2026
Franklin, Murfreesboro, Hendersonville and the rest
Repair or replace, and when
What we read, and how
FAQ
Sources

Which license depends on your county line

Window replacement nashville tn is a county question before it is a window question, because Tennessee handles home improvement licensing county by county. The Tennessee Board for Licensing Contractors page 'County Information Adopting the Home Improvement Law' (Internet Archive snapshot of 9 Nov 2025) explains that a county may adopt the Home Improvement license requirement by a two-thirds vote of its commission.

The list we read names nine counties that require a Home Improvement license for projects over $3,000 and under $25,000: Bradley, Davidson, Haywood, Hamilton, Knox, Marion, Robertson, Rutherford, and Shelby. Davidson County, which includes Nashville, is on that list. Rutherford County (Murfreesboro, Smyrna) and Robertson County (Springfield) are also on the list. Williamson County (Franklin, Brentwood), Sumner County (Hendersonville, Gallatin), Wilson County (Mt. Juliet, Lebanon) and Cheatham County are not on the list we read.

Which Tennessee license a job needs by price: no Home Improvement license at 3,000 dollars or less, a Home Improvement license above 3,000 and below 25,000 dollars in the counties that adopted it, and a Contractor license from 25,000 dollars — The license changes at two prices, and the middle band depends on the county.

Davidson County: the $3,000 to $25,000 band

The Board's 'Application Requirements' page states that the Home Improvement license covers projects 'more than $3,000 to less than $25,000 (larger projects require a Contractor's license)'. The license does not cover electrical, gas, mechanical, HVAC or plumbing work. It requires a $10,000 bond, and the same page says the contractor 'Cannot require more than 1/3 down payment'.

Tenn. Code 62-6-501(4) defines 'home improvement' as repair, replacement, remodeling or improvement of a residence of one to four units, and it specifically names 'storm windows'. The definition excludes any home improvement whose contract price is $3,000 or less. We did not confirm whether the county list changed after 9 Nov 2025.

At $25,000 the license changes

The Board's 'Contractor' page says a contractor's license is 'required before contracting, including bidding, offering to engage, or negotiating a price, for projects of $25,000 or more'. That means a whole-house window package that crosses the $25,000 threshold moves the licensing requirement from the Home Improvement category to the full Contractor license. The deposit rule we read sits in the home improvement part of the code (62-6-510), and we did not read the rules for a contractor-licensed job above $25,000, so ask which rule the contract follows.

Williamson, Sumner, Wilson: not on the list we read

The county list we read does not include Williamson, Sumner, Wilson or Cheatham counties. We did not read any Williamson, Sumner or Wilson county rule, so we cannot say whether those counties have adopted the Home Improvement license or have their own requirements. A homeowner in Franklin, Brentwood, Hendersonville, Gallatin, Mt. Juliet or Lebanon should check with the local building department before assuming the state license rule applies.

Counties around Nashville and the Home Improvement license list: Davidson, Rutherford and Robertson are on the list; Williamson, Sumner, Wilson and Cheatham are not on the list that was read, and county rules beyond the state list were not read — Davidson is on the list; its neighbors split.

What a Tennessee home improvement contract has to say

Tennessee law sets out what a home improvement contract must contain. Tenn. Code 62-6-508 (Justia 2023 text, via Internet Archive) lists the required elements.

What Tenn. Code 62-6-508 requires in a home improvement contract: names and license number, the work and goods with start and completion dates, no blank spaces, the price, the Board licensing notice, and no changes by salespeople — The contract is the protection. Each box is a line of the code, not a tip.

The lines of Tenn. Code 62-6-508

The statute says every home improvement contract must be in legible writing and contain the complete agreement. It must state the full names and addresses of all parties, the contractor's license number, the date signed, a description of the work and the goods to be used. The contract must be completed in full without blank spaces and carry directly above the owner's signature: 'NOTICE TO OWNER: Do not sign this contract if blank. You are entitled to a copy of the contract at the time you sign.' It must give approximate start and substantial-completion dates, state the agreed price, and carry a notice that home improvement contractors must be licensed by the board with inquiries directed to the board's office. It must contain no power of attorney to confess judgment. Subsection (b) says no salesperson, agent or employee of the contractor may change the agreement on behalf of the owner. Subsection (c) says a contract that fails these requirements 'shall not be invalid solely because of noncompliance', so non-compliance is a red flag, not an automatic escape.

The one-third deposit rule, with arithmetic

Tenn. Code 62-6-510 lists prohibited acts. Item (11) forbids demanding or receiving any payment before the home improvement contract is signed. Item (12) caps the deposit at one-third of the contract price at or before signing, unless the contract allows the contractor to furnish a performance and payment bond of at least 1 percent of the contractor's net sales of home improvement labor, or the owner, after being fully advised in writing of the right to withhold final payment up to 100 percent before completion, elects to pay before completion or the parties agree a payment schedule. Our arithmetic: on a $9,000 contract one third is $3,000; on $15,000 it is $5,000; on $24,000 it is $8,000.

Largest deposit allowed at signing under the one-third rule in Tenn. Code 62-6-510: 3,000 dollars on a 9,000 dollar contract, 5,000 on 15,000, and 8,000 on 24,000 — One third at signing is the line; two exceptions are written into the code.

Permits, license numbers and unlicensed work

Tenn. Code 62-6-503(d) says a city or county may not issue a permit for home improvement work unless the permit lists each contractor's home improvement license number, with an exception for owner-performed work. Section 62-6-503(e) states that an unlicensed person who does home improvement business faces treble damages in a tort action. Section 62-6-103(b) says a contractor required to be licensed who violates the licensing part cannot recover damages beyond actual documented expenses shown by clear and convincing proof. Tenn. Code 62-6-510(13) also lists 'Failure to obtain the necessary permits as required by any local jurisdiction' as a prohibited act.

Three more Tennessee lines: no payment before the contract is signed, permits required by the local jurisdiction must be obtained, and the permit must list the contractor license number — Payment, permit and license number: three lines that work together.

Seven questions to ask before you sign

Use these questions to verify that the contractor and the contract meet Tennessee requirements for home improvement work.

What type of license do you hold for this project, and what is the license number? The Tennessee Board for Licensing Contractors lists a Home Improvement license for projects above $3,000 and below $25,000 in Davidson, Rutherford and Robertson counties, and a Contractor's license from $25,000 (Board pages, archive copy of 9 Nov 2025).
Does the contract include all required elements: full names and addresses, the contractor's license number, date signed, description of work and materials, no blank spaces, the required notice above my signature, approximate start and completion dates, the agreed price, and a licensing notice? Tenn. Code 62-6-508 mandates each of these items in every home improvement contract; a missing item is a red flag even though noncompliance does not automatically invalidate the contract.
What is the deposit amount, and does it exceed one third of the contract price? Tenn. Code 62-6-510(12) makes a deposit above one third of the price at or before signing a prohibited act, unless a bond covers the job or the owner, advised in writing of the right to withhold final payment, chooses to pay early or agrees a payment schedule.
Will you request any payment before the contract is signed? Tenn. Code 62-6-510(11) makes it a prohibited act to demand or receive payment before the home improvement contract is signed.
Who will obtain the necessary permits, and will the permit list your license number? Tenn. Code 62-6-503(d) requires that any permit for home improvement work list each contractor's license number; the Metro Nashville permit list (revised 2011) shows that replacing a whole window unit in the same opening is not explicitly addressed, so the local codes office determines the requirement.
Does the license you hold cover this county and this contract price? The Board's county page (archive copy of 9 Nov 2025) lists the nine counties with the Home Improvement requirement; we did not confirm changes since then and did not read rules for Williamson, Sumner, Wilson or Cheatham counties.
Will anyone besides you, such as a salesperson, change the agreement after I sign? Tenn. Code 62-6-508(b) says no salesperson, agent or employee of the contractor may change the agreement on behalf of the owner, so a change by anyone else is a question to settle in writing.

What Metro's permit list says about windows

Before a window installation nashville tn job starts, read what Metro Nashville's Department of Codes & Building Safety publishes: a 'List of building projects which may or may not require a permit' (issued 15 Jan 1989, revised 4 Apr 2011; read 22 Oct 2026). The list has two columns: one- and two-family dwellings, and all other buildings.

Metro Nashville permit list for one- and two-family homes: glass replacement needs no permit, glass changing the window area needs one, windows changing style or size need one, storm windows need none, and a whole unit swapped into the same opening has no row — Five rows answer the common cases; the sixth case, a whole unit, has no row.

Metro Nashville list for one- and two-family homes, issued 1989, revised 4 Apr 2011, read 2026-10-22
The job	What the list says	The row
Glass replacement	Permit: no for one- and two-family homes; yes for all other buildings	Metro Codes list, row GLASS REPLACEMENT
Glass changing the window area	Permit: yes, smaller or larger, in both columns	Metro Codes list, row GLASS CHANGING WINDOW AREA
Windows changing style or size	Permit: yes in both columns	Metro Codes list, row WINDOWS CHANGING STYLE OR SIZE
Storm windows	Permit: no for one- and two-family homes; yes for all other buildings	Metro Codes list, row STORM DOORS & WINDOWS
A whole unit in the same opening, same style	No row in the list: the answer comes from Metro Codes for the address	honest gap, marked as such

Glass, size and style: three rows

Three rows decide the common cases, and three more mention windows. 'GLASS REPLACEMENT' is marked 'no' for one- and two-family dwellings and 'yes' for all other buildings. 'GLASS CHANGING WINDOW AREA (smaller or larger)' is 'yes' for both columns. 'WINDOWS CHANGING STYLE OR SIZE' is also 'yes' for both columns. 'STORM DOORS & WINDOWS' is 'no' for dwellings and 'yes' for other buildings. 'SCREENS (doors, windows) new' is 'no' for dwellings and 'yes' for other buildings. 'GUARDS ON WINDOWS' is 'yes' for both columns.

The row the list does not have

The list has no row for replacing a whole window unit in the same opening with the same style. Because that row is missing, the list does not answer that case. The answer comes from Metro Codes for the specific address. The list is 15 years old (2011 revision), so ask whether Metro Codes still follows it.

Three questions to put to Metro Codes before signing: whether the swap is a permit job, who pulls the permit and puts the license number on it, and which office covers the address — Ask in writing; the list is from 2011.

Outside Davidson County: what we could not read

Suburbs outside Davidson County — Franklin, Brentwood, Murfreesboro, Hendersonville, Mt. Juliet and others — have their own permit offices. We did not read their rules. A homeowner in those jurisdictions must contact the local building department to learn whether a permit is needed for a like-for-like window replacement.

Glass for a metro with two zones

For replacement windows nashville, start with the zone: the ENERGY STAR climate-zone table (V7), read 22 Oct 2026, splits the Nashville metro area by county. The zone determines the U-factor and SHGC thresholds a window must meet to earn the ENERGY STAR label.

ENERGY STAR solar heat gain caps by zone: South-Central counties (Davidson, Williamson, Rutherford) at 0.23 or lower, North-Central counties (Sumner, Wilson, Cheatham, Robertson) at 0.40 or lower — The sun cap is nearly twice as strict on the Davidson side of the line.

Davidson is South-Central, Sumner is North-Central

The table assigns each county a primary climate zone. Davidson County's 54 ZIP codes are all South-Central. Williamson County's 14 ZIP codes are South-Central. Rutherford County's 16 ZIP codes are South-Central. Sumner County's 9 ZIP codes are North-Central. Wilson County's 8 ZIP codes are North-Central. Cheatham County's 5 ZIP codes are North-Central. Robertson County's 7 ZIP codes are North-Central. A ZIP code can cross a county line, so look up your ZIP in the table to be certain. The label on a window does not change with the county; only the bar you compare it with does.

49 hot days and 67 freezing days in one year

The National Weather Service Nashville climate page (updated 1 May 2026) gives normals for Nashville airport. The airport averages 49 days per year with a high of 90°F or more, concentrated in July (17), August (14), June (10), September (6) and May (2). It averages 67 days with a low of 32°F or lower, concentrated in January (19), December (16) and February (15). Snow falls on about 6 days a year, totaling 4.7 inches normal. The record high is 109°F (2012) and the record low is -17°F (1985). The hot-day and freezing-day counts are both annual normals, so one window faces both.

Normal days a year at Nashville airport: 49 with a high of 90 degrees or more, 67 with a low of 32 or less, and 6 with snowfall — Normals, not a forecast. One window faces both ends of the thermometer.

Read the NFRC label, whole unit, on the quote

ENERGY STAR criteria (table Oct 2023) for South-Central windows require U-factor ≤ 0.28 and SHGC ≤ 0.23. For North-Central windows the requirements are U-factor ≤ 0.25 and SHGC ≤ 0.40. Both zones require air leakage ≤ 0.3 cfm/ft². U-factor measures heat flow (lower is better insulation). SHGC is the solar heat gain coefficient, the share of sun heat the whole window lets in. Ask for the NFRC label values for the whole unit on the quote, and compare them with the numbers for your zone.

The money: what is not subsidized in 2026

The federal window credit ended with 2025 installs, and we could not confirm a utility window rebate.

What does not pay for a Nashville window in 2026: the federal 25C credit ended with 2025 installs, the Nashville Electric Service rebate page lists no window line, and an unnamed rebate line is a sales discount — Quotes keep implying subsidies. Ask for the program name.

The federal credit ended with 2025 installs

The IRS page on the Energy Efficient Home Improvement Credit states that improvements made through Dec 31, 2025 qualify. Windows had a $600 annual limit and had to meet ENERGY STAR Most Efficient. Our reading indicates no federal window credit for a 2026 install.

What the NES rebate page lists, and what it does not

The Nashville Electric Service rebates page (read 22 Oct 2026) lists TVA EnergyRight Solutions rebates for mini splits, central AC, duct sealing and HVAC tune-up, air sealing and insulation, and Smart Thermostat Rewards up to $100. There is no window line on that page. The TVA EnergyRight home-rebates entry is a ZIP-code lookup; we did not open a window-specific program, so we could not confirm one. A quote line called a rebate or discount must name the program in writing.

What actually moves a Nashville quote

For home window replacement nashville, price depends on drivers such as window material, glass package, installation method, number of openings, and any structural modifications. The site page /window-installation-cost explains the cost drivers and whole-house arithmetic. No document we read gives a per-window figure, so none is given here. The line-by-line arithmetic, labor hours per opening and whole-house math, sits on our installation cost guide; the only figure that binds your house is the written, itemized quote.

Franklin, Murfreesboro, Hendersonville and the rest

The Nashville metro area spans multiple counties, each with its own licensing and permit rules. The first step is to identify the county for the property address.

Which county and which rules around Nashville: Davidson with the license band and the Metro list, Williamson and Rutherford in the South-Central zone, Sumner, Wilson and Cheatham in the North-Central zone — Find the county first; everything else follows from it.

Find your county before you read anything else

Davidson, Rutherford and Robertson counties are on the Home Improvement license list we read. Williamson, Sumner, Wilson and Cheatham are not on that list. We did not read any county rule outside Davidson. A homeowner in Franklin (Williamson), Murfreesboro (Rutherford), Hendersonville (Sumner), Mt. Juliet (Wilson) or Springfield (Robertson) should verify the local license requirement with the county clerk or building department before signing a contract. Write the county at the top of your notes, then check three things in that order: the Board list for the license, the ENERGY STAR table for the glass zone of your ZIP, and Metro Codes or your own permit office for the permit.

Companies, Reddit threads and the filter that works

A search for window replacement nashville reddit finds a thread on r/nashville that was the first Google result on 22 Oct 2026; we did not read its comments because they were blocked. Threads are anecdotes, not documents. The site does not rank or recommend companies. A practical filter is to ask each bidder for their Tennessee Home Improvement or Contractor license number, proof of the $10,000 bond, and a written contract that meets Tenn. Code 62-6-508. Check the license status on the Board's website. If the county answers are in hand, our replacement process guide shows the order of a job on site, and the vinyl vs wood and double-hung vs casement pages cover the frame and style choices.

Repair or replace, and when

Deciding between repair and replacement starts with a few simple checks. Seasonal timing can affect scheduling and comfort during the work.

Repair or replace: repair a fogged seal, weatherstripping, a lock or a screen; replace warped frames, single-pane sashes and failed installations; screens are priced apart — Tests before the first bid decide what the bid is for.

Tests before you ask for a quote

Start with the signs on our when-to-replace-windows page, then use the smoke test on the drafty-windows page to find the leak before you pay for a new unit. A fogged seal, tired weatherstripping, a stuck lock or a torn screen are repair jobs, and a screen is priced apart from the window. Warped frames and single-pane sashes are the replace side.

What changes with the season

Nashville's normals are 49 days a year at or above 90°F and 67 days at or below 32°F. A job opens each frame for a short interval, so ask the crew how it handles open frames on a day above 90°F and on a day below freezing. We found no document that ties window prices or installer demand to the season, so a seasonal discount on a quote should be treated like a rebate line and named in writing. The order of a job on site is in the replacement process guide. The signal-by-signal tests are on our when to replace windows page, the leak-chasing half is on drafty windows, and the order of a job on site is in the replacement process.

What we read, and how

This guide is built from public documents read on 22 October 2026. We did not test products or interview contractors.

What this page is built on: documents read with quotes on 22 October 2026, and the pages that could not be read — The gaps are listed, not hidden.

Documents read on 22 October 2026

We read the Tennessee Board for Licensing Contractors page 'County Information Adopting the Home Improvement Law' via Internet Archive snapshot of 9 Nov 2025 (the live tn.gov page returned HTTP 403 on 22 Oct 2026). We read the Board's 'Application Requirements' page and 'Contractor' page. We read Tenn. Code 62-6-501(4), 62-6-508, 62-6-510, 62-6-503(d) and (e), and 62-6-103(b) via Justia 2023 text on Internet Archive. We read Metro Nashville Department of Codes & Building Safety 'List of building projects which may or may not require a permit' (issued 15 Jan 1989, revised 4 Apr 2011). We read the ENERGY STAR climate-zone table (V7) and criteria table (Oct 2023). We read the National Weather Service Nashville climate page (updated 1 May 2026). We read the IRS page on the Energy Efficient Home Improvement Credit and the Nashville Electric Service rebates page. We did not read the live tn.gov pages, any Williamson, Sumner or Wilson county rules, any suburban permit rules outside Davidson County, the Reddit comments, or any window-specific TVA EnergyRight program.

Common questions, Nashville edition

How much does window replacement cost in Nashville?

Searches for window replacement nashville tn cost or the best price want one figure. Cost depends on drivers such as window material, glass package, installation method, number of openings, and any structural modifications. The site page /window-installation-cost explains the cost drivers and whole-house arithmetic. No document we read gives a per-window figure, so none is given.

Do I need a permit for window replacement in Nashville?

Metro Nashville's permit list does not have a row for a like-for-like window replacement in the same opening. The list says no permit for glass replacement in a one- or two-family home, and yes for glass that changes the window area and for windows that change style or size. A whole unit swapped into the same opening is not on the list, so ask Metro Codes for your address. Suburban jurisdictions have their own rules, which we did not read.

How big a deposit can a contractor ask for in Tennessee?

Tenn. Code 62-6-510(12) caps the deposit at one-third of the contract price at or before signing, unless the contract provides a performance and payment bond of at least 1 percent of the contractor's net sales of home improvement labor, or the owner, fully advised in writing of the right to withhold final payment, chooses to pay before completion or the parties agree a payment schedule. No payment may be demanded before the contract is signed per Tenn. Code 62-6-510(11).

Do I need a licensed contractor for window replacement in Nashville?

In Davidson County the Home Improvement license is required for projects over $3,000 and under $25,000, per the Board's county list. Projects of $25,000 or more require a Contractor's license. Williamson, Sumner, Wilson and Cheatham counties are not on the list we read, so the state license rule may not apply there. Ask the Board how to check a license, and ask the county about its own rules.

What are the best window companies in Nashville?

Anyone searching for window replacement companies nashville, window replacement companies in nashville tn, window companies nashville tn, the best window replacement company nashville or the best window replacement nashville finds listicles and directories we cannot audit. This site does not rank or recommend companies. A practical filter is to ask each bidder for their Tennessee Home Improvement or Contractor license number, proof of the $10,000 bond, and a written contract that meets Tenn. Code 62-6-508. Verify the license status on the Board's website.

Are there free window replacement programs or rebates in Nashville?

Searches for free window replacement nashville or a replacement windows nashville tn program find mostly ads. The federal Energy Efficient Home Improvement Credit ended with 2025 installs. The Nashville Electric Service rebate page lists no window rebate; it covers HVAC, air sealing, insulation and smart thermostats. The TVA EnergyRight home-rebates lookup is a ZIP-code tool; we did not confirm a window-specific program. Any quote line called a rebate must name the program in writing.

What are the best windows for Nashville weather?

Nashville spans two ENERGY STAR climate zones. Davidson, Williamson and Rutherford counties are South-Central (U-factor ≤ 0.28, SHGC ≤ 0.23). Sumner, Wilson, Cheatham and Robertson are North-Central (U-factor ≤ 0.25, SHGC ≤ 0.40). Both zones require air leakage ≤ 0.3 cfm/ft². The NFRC label on the quote should show whole-unit ratings. Nashville airport normals are 49 days a year at or above 90°F and 67 days at or below 32°F.

Should I repair or replace my windows?

Window repair nashville tn jobs such as a fogged seal, tired weatherstripping or a stuck lock come first; the signs and the smoke test are on our when-to-replace-windows and drafty-windows pages. Home window repair nashville comes first when only a part has failed. Window pane replacement nashville and glass replacement nashville tn are priced apart from a whole new unit, and window screen replacement nashville is priced apart from both.

What about Franklin, Murfreesboro, Hendersonville and other suburbs?

For window replacement franklin tn, window replacement brentwood tn, window replacement murfreesboro tn or window replacement hendersonville tn, start with the county. Franklin and Brentwood are in Williamson County; Murfreesboro and Smyrna are in Rutherford County; Hendersonville and Gallatin are in Sumner County; Mt. Juliet and Lebanon are in Wilson County; Springfield is in Robertson County. Rutherford and Robertson are on the Home Improvement license list we read; Williamson, Sumner, Wilson and Cheatham are not. We did not read any suburban permit rules. Verify licensing and permit requirements with the local county or city building department before signing.