Window Replacement

Plano requires the permit, and publishes no handout for it

Replacing windows in a Plano house requires a building permit. The rule sits on the city's own list of permit-required work — the Building Inspections handout When Is a Permit Required?, form FM624MP010 — which names “remodeling of a building requiring the addition or replacement of walls or windows.” The same handout exempts cosmetic work: painting, wallpapering, carpeting, cabinets and trim, plus replacement of fixtures on existing systems. Windows sit on the permit side of that line. The residential fee schedule reinforces it, carrying a standalone billing category named “Windows.”

What Plano does not publish is a window-replacement handout. For re-roofing, fences, pools, patio covers, carports, driveway approaches, irrigation and generators the department issues a permit-requirements sheet naming submittals and, in several cases, the actual inspections. For windows there is no such document, and none could be located. That is worth saying plainly rather than filling in: the permit requirement follows from a general rule on a general list, not from a published page describing what a Plano window permit involves.

So nobody can look up what the city asked of a window job in 2014, or in 2023. What can be established is which rulebook was in force on the day the permit issued — and on windows, that carries more than the paperwork does.

The energy code in force is what the window had to be

A replacement window is an energy-code product before it is anything else. Plano adopts the International Energy Conservation Code as part of a package on roughly the three-year International Code Council cycle: regional amendments developed by the North Central Texas Council of Governments, reviewed by Plano's Building Standards Commission, then adopted by City Council as a numbered ordinance. Each adoption resets what glazing had to achieve, and each applies to permits issued after it takes effect — not to windows already in the wall.

Plano publishes its 2018, 2021 and 2024 code sets side by side in three tabs — the city's own record that houses here were altered under at least three rulebooks in eight years. Anything before the 2015 cycle could not be verified from published material and is not guessed at here.

A window permitted in 2019 was reviewed against a different energy code from one permitted in 2023, and both against a different one from a window permitted today. All three are legal. None is the same product. The permit's issue date is the key that says which, and nothing else in the file does that job.

What the city inspects, and the code that does not exist

Plano publishes the master list of inspection codes its automated scheduling systems draw from — the menu every permit in the city is built out of. On the building side it runs from 100 to 895 and covers forms survey, footing and pier, slab, framing, drywall, veneer, exterior sheathing, insulation, final energy, final grading and final building. There is no window inspection code in it.

A window permit therefore closes on a building final, 890 BI FINAL. Where energy work forms part of a larger job, 870 BI FINAL ENERGY exists separately, and 895 BI FNL BLDG/ENGY/GRD combines building, energy and grading into one visit. Which of those a particular permit carried is not published. The city's Customer's Guide to the Building Permit Process states the arrangement in a sentence: “A list of required inspections will be provided with the permit when issued.” Plano publishes the menu, not the order.

Two current-cycle facts are worth knowing. The 2024 IECC as amended requires air-leakage and duct-leakage testing on every one- and two-family dwelling regardless of compliance path — a whole-envelope test rather than a window test, but the first cycle here to make tightness a measured quantity. And the Energy Rating Index for this climate zone steps down on a schedule: 59 through 31 August 2025, 57 to 31 August 2028, then 55.

What a finaled window permit is evidence of

It is evidence of a short list. Work was declared rather than done quietly. A permit issued on a date. The work was reviewable against the code edition in force on that date. An inspector recorded an approval on a final visit.

That is the whole of it. A finaled window permit does not establish that the units are the ones on the invoice, that the openings were flashed and sealed in any particular way, that the frames were shimmed square, that the insulating glass still holds its seal, or that any of it performs today. The model residential code makes the point better than commentary can: its own text provides that approval resulting from an inspection shall not be construed to be an approval of a violation, and it describes its requirements as minimum requirements for safety, health and general welfare. Durability, workmanship and quality are not on that list.

Where Plano's own amendments touch glass

Most of Plano's local amendments to the residential code concern foundations, framing, gas piping, garages and address numerals. Glazing appears in one place, and it is the pool code — which puts it in a large number of Plano back yards.

• Impact-resistant glazing near water. Under the residential code as applied to pools, impact-resistant glazing is required within 5 feet of the water's edge where the glazing sits less than 60 inches above the walking surface.
• Alarms on low-sill operable windows. The 2024 International Swimming Pool and Spa Code as amended by Ordinance 2025-6-12 requires operable windows with a sill height under 48 inches, along with doors and gates, to produce an audible warning when the window, the door or its screen is opened, with the deactivation switch 48 to 54 inches above the finished floor.

Both rules attach to the pool rather than to the window permit, and both bind when the pool work is permitted. A house where windows were replaced after a pool was built carries two permits, from two years, under two code editions, describing the same opening.

What a private inspection sees that no city inspection covered

A Texas home inspection is a different instrument, and the rules say so. Under the Standards of Practice at 22 TAC §535.227(a), a real estate inspection is “a limited visual survey and basic performance evaluation of the systems and components of a building using normal controls” and “is not intended to be a comprehensive investigation or exploratory probe.”

Several of its limitations land squarely on windows. At §535.227(d)(3)(F) an inspector is not required to determine “compliance with any code, listing, testing or protocol authority” (vi), nor “energy efficiency, vapor barriers, or thermostatic performance” (v), nor “life expectancy or age” (iv). Within those limits, what a window gets is a person opening it — the part no municipal inspection ever performed, on any Plano window, at any point.

• Operation. Sashes are worked with normal controls: opened, closed, latched. Binding, dropped sashes, painted-shut units and failed balances surface here and nowhere else.
• Failed insulating-glass seals. A double-glazed unit whose perimeter seal has failed admits moisture between the panes. It is a visible condition, reported as condition rather than code, and invisible to any inspection that happened before the failure occurred.
• Bedroom escape openings. Whether a sleeping room's window opens, and how far, is a performance observation. Whether the clear opening satisfies a particular code edition is a code determination, which (d)(3)(F)(vi) does not require. Replacement methods that fit a new frame inside the old one reduce the opening by construction — exactly the change a window permit's final would not have been looking for.

The reporting standard also differs from expectation. A “deficiency” under §535.227(b) is a two-branch test: a condition that materially affects performance, or one that constitutes a hazard. It is not “differs from current code.”

A missing window permit, in proportion

This is a middling item, and the record proves little in either direction. A window permit in a Plano file gives you a date and therefore a code cycle. A window permit missing from the file tells you only that no city inspector recorded a final visit for that work. It does not tell you the windows are bad, and this site will not pretend otherwise.

The useful move is comparative: set what is physically in the house against what the file contains, and read the difference. Replacement units in a 1985 house with no window permit means the swap happened outside the municipal system, so the only evidence of what went in is the units themselves and whatever the seller kept. Texas law asks the seller about exactly this — the disclosure notice under Property Code §5.008 asks, at Item 9, whether the seller is aware of alterations or repairs “made without necessary permits or not in compliance with building codes in effect at that time” — and §5.008(d) accepts “unknown” as a complete and compliant answer.

Building Inspections is the only authority on what Plano requires and on what its own files contain. This reference describes published material, does not speak for the city, and is not legal advice.

Common questions

An independent reference. This site is not affiliated with, endorsed by, or speaking for the City of Plano. It performs no inspections, pulls no permits and sells nothing. For an official record or an official answer, go to the city. Who publishes this.