What happens if you skip the permit (and you needed one)
- If you replace a historic-district window without design review and a permit, the city can issue a stop-work order (cost: $500–$1,500 in fines) and may require removal and replacement with compliant windows at your expense.
- If you enlarge an opening without a permit and the new header fails during inspection years later, your homeowner's insurance may deny a claim for structural damage or water intrusion, potentially costing $10,000+.
- If you fail an egress inspection (sill height over 44 inches in a bedroom window), a future home sale can fall through when the buyer's lender orders a code-compliance review; disclosure liability can add $5,000–$15,000 in legal fees.
- Unpermitted work discovered during a refinance or appraisal can trigger a forced re-pull permit and reinspection, costing an extra $200–$400 in permit fees plus delays of 2–4 weeks.
Peachtree Corners window replacement permits — the key details
Georgia state law exempts like-for-like window replacement from permitting, and Peachtree Corners Building Department honors that exemption. The rule is straightforward: if you're replacing an existing window with a new window in the same opening (no size change, no new opening cut, same operable type), you do not need a permit. This is codified in Georgia's statewide residential exemptions and Peachtree Corners' 2018 International Building Code adoption. The exemption applies to single-family homes, duplexes, and townhouses. You can order, purchase, and install the replacement window yourself without filing paperwork or paying fees. No final inspection is required. However, the exemption does NOT mean the new window is automatically code-compliant — it means you're not required to report the work to the city. The new window must still meet 2018 IECC requirements for thermal performance (U-factor 0.32 for the whole window assembly in climate zone 3A), and it must meet IRC R612 fall-protection rules if the window is in a living space and the sill is below 36 inches (tempered glass or safety bars required). The practical upside: you avoid delays and fees. The practical downside: you're responsible for code compliance, and if a future lender or inspector flags the window, you'll be retrofitting on your dime.
Peachtree Corners' historic-district overlay is the single most important exception. If your home was built before 1945 and is located in the Peachtree Corners Historic District (a small but strictly enforced zone roughly centered on the original town grid near Peachtree Road and Dunwoody Avenue), window replacement is NOT exempt — it requires a Certificate of Appropriateness from the city's Planning and Zoning Division BEFORE you order or install anything. The historic-district design guidelines require replacement windows to match the original muntin pattern (number and arrangement of glass panes), frame material (typically painted wood or vinyl that mimics wood profiles), and overall appearance. A vinyl replacement window with a different grid pattern, even if it fits the same opening, will be rejected. The Certificate of Appropriateness process typically takes 2–4 weeks; you submit photos of the existing window, the proposed replacement, and measurements. Once approved, you can proceed with installation without a separate building permit (the CoA IS your authorization). If you install without approval and the city discovers the work, you'll be ordered to remove the new window and reinstall a compliant one — no exceptions, and the cost of reversal is on you. Check your property deed, title abstract, or contact Peachtree Corners Planning and Zoning (part of City Hall) to confirm whether your home is in the historic district before you proceed.
Egress windows in bedrooms have strict sill-height requirements under IRC R310.1. If you have a basement bedroom or a room below grade with a window, that window must have a sill height of no more than 44 inches above the floor to qualify as a means of escape in an emergency. If your existing basement-bedroom window has a sill height OVER 44 inches, replacing it with the same-size window does NOT cure the code violation — it merely perpetuates it. In this case, the exemption doesn't apply; you need a permit to enlarge the opening downward (or relocate the window entirely) to meet the 44-inch sill-height limit. The IRC also requires the egress window to have a clear opening of at least 5.7 square feet and a minimum width and height of 20 inches each. If your existing egress window meets these minimums, a like-for-like replacement is fine. If it doesn't, and you're replacing it, you're required to bring it into compliance — which means a permit and framing inspection. Measure your existing window's sill height and opening dimensions before you assume the replacement will be exempt.
Energy-code compliance (IECC 2018, climate zone 3A) is a silent but important rule. Your replacement window must achieve a U-factor of 0.32 or better for the whole window assembly (frame + glass + seals). Most modern double-pane, low-E windows meet this easily. However, if you're replacing old single-pane or very old double-pane windows with USED or reclaimed windows of similar vintage, you may fall short. The exemption doesn't require you to submit energy-code paperwork, but it does require the window itself to comply. If you're unsure of a window's U-factor, ask the supplier for the NFRC (National Fenestration Rating Council) label — it will list the U-factor. Peachtree Corners is in IECC climate zone 3A (warm-humid), which is less stringent than northern zones, but the 0.32 standard is still the floor. Additionally, if your replacement window is within 24 inches of a door or bathtub, or within 60 inches horizontally of a bathtub edge, the glass must be tempered or laminated (IRC R612). This is rare in window-only work but worth checking if you're replacing a window near a bathroom or exterior door.
Practical workflow for same-size replacement: (1) Measure the existing opening width and height (rough opening, not the window frame itself). (2) Check your property deed or call Peachtree Corners Planning and Zoning to confirm you're NOT in the historic district. (3) If basement bedroom, measure the sill height and clear opening dimensions to confirm egress compliance. (4) Order a replacement window that matches or exceeds the opening size and meets IECC U-factor 0.32. (5) Install the window yourself or hire a contractor (no difference for permitting purposes — exemption applies either way). (6) Keep the new window's NFRC label or energy-guide paperwork in case of a future appraisal or inspection. You do not file anything with Peachtree Corners Building Department. If you live in the historic district, skip to step 2, then file a Certificate of Appropriateness application with Planning and Zoning (typically 1–2 pages, photos, and $0–$50 fee) before purchasing or installing anything.
Three Peachtree Corners window replacement (same size opening) scenarios
Why Peachtree Corners' historic district is a hard stop for window work
Peachtree Corners' historic district is small but strictly enforced. The district includes approximately 200–300 properties in a core area roughly bounded by Peachtree Road, Dunwoody Avenue, and the original town center; homes built before 1945 in this zone are subject to the historic-district overlay and design-review rules. Unlike permitting for size changes or egress, which are technical code questions, historic-district approval is a design judgment call — and Peachtree Corners' Planning and Zoning Division has explicit authority to reject, request revisions, or approve based on 'appropriateness' to the historic character. A 1930s Craftsman bungalow with 6-over-6 windows cannot be replaced with single-pane modern windows without a Certificate of Appropriateness.
The practical implication: if you're in the historic district, you must identify your window's original muntin pattern, frame material, and general profile before you shop for a replacement. A contractor or window supplier experienced in historic work can help, but many big-box stores and national window chains cannot supply period-appropriate windows quickly. Custom or semi-custom options (true-divided-light wood, or vinyl that mimics divided-light patterns) cost 30–50% more than standard modern windows and may take 4–8 weeks to order. If you order the wrong window and then submit it for CoA review, you'll get a rejection, have to return it, reorder the correct product, and lose 4–6 weeks.
The recommendation: before spending a dollar, contact Peachtree Corners Planning and Zoning (part of City Hall) and confirm whether your property is in the historic district. If it is, request a copy of the historic-district design guidelines (usually available online or in PDF) and review the window section. Then contact 1–2 window suppliers who specialize in historic or Craftsman-style windows, get quotes and samples, and prepare your CoA application with photos and detailed specs. Plan for a 6–10 week timeline (CoA review + window ordering + installation) rather than a 1–2 week timeline for standard replacements.
Peachtree Corners' frost depth, soil, and why you should care about window installation
Peachtree Corners sits in Georgia's Piedmont region, with red clay (Cecil series) mixed with occasional granite outcrops to the north. The frost depth is 12 inches — relatively shallow compared to northern states — which means window frames and headers are less vulnerable to frost heave or seasonal movement. However, Peachtree Corners experiences significant temperature swings year-round (winter lows near 30°F, summer highs near 90°F), which creates expansion-and-contraction stress on window frames and caulking seals. When you replace a window, proper caulking and flashing are critical to prevent water intrusion into the Piedmont clay, which is prone to expansive behavior when wet. If water gets behind a window frame and saturates the surrounding clay, the wall can shift, causing the window to jam or the frame to crack.
The installation lesson: even though like-for-like window replacement is exempt from permitting, it should NOT be exempt from care. When you install the new window (or hire a contractor), use polyurethane or silicone caulk rated for exterior use, ensure the window is shimmed and leveled properly (no twisted frames), and seal all gaps with foam and caulk. A $500 window installed carelessly can lead to a $5,000 wall repair if water gets into the Piedmont clay. Peachtree Corners Building Department won't inspect your installation, but future buyers, lenders, and home inspectors will — and they'll flag poor windows or water damage immediately.
The climate angle: Peachtree Corners' warm-humid climate (IECC 3A) means you're less concerned about heating efficiency and more concerned about moisture control. A high-quality Low-E coating that reflects solar heat (reducing AC load) is worth the extra cost. Conversely, you don't need triple-pane windows or extreme insulation — double-pane Low-E is the sweet spot. The U-factor threshold of 0.32 is more than adequate for Georgia. Focus your money on proper installation and moisture management, not on over-building for cold climates.
City Hall, Peachtree Corners, GA (contact city directly for street address)
Phone: (770) 724-7777 (main city line; confirm building permit phone) | https://www.peachtreecorners.com (search for 'building permits' or 'online portal')
Monday–Friday, 8 AM–5 PM (verify locally before visiting)
Common questions
Do I need a permit to replace a window that's the exact same size as my existing window?
No, in most cases. Georgia state law exempts like-for-like window replacement (same opening size, same operable type) from permitting. Peachtree Corners honors this exemption. However, there are three exceptions: (1) if your home is in Peachtree Corners' historic district, you need a Certificate of Appropriateness from Planning and Zoning before installing; (2) if the window is a basement-bedroom egress window and the sill height is already over 44 inches, replacing it with the same size doesn't cure the code violation, so a permit is required to enlarge the opening; (3) if you're enlarging the opening while installing the new window, a permit is required. Measure carefully and check your deed or call Planning and Zoning to confirm you're not in the historic district.
What's the difference between a Certificate of Appropriateness and a building permit?
A Certificate of Appropriateness (CoA) is issued by Peachtree Corners' Planning and Zoning Division and approves the DESIGN of your replacement window (color, muntin pattern, materials) to ensure it matches the historic character of your home and district. A building permit is issued by the Building Department and approves the structural and code compliance of the work. If you're in the historic district and replacing a window, you need the CoA BEFORE you order or install the window. Once you have the CoA, you do NOT need a separate building permit for same-size replacement — the CoA is your authorization. If your work involves opening enlargement or structural changes, you'd need both the CoA and a building permit.
My basement has a bedroom with one small window. Does that window have to meet egress requirements, and can I replace it without a permit?
Yes, if the bedroom is below grade (basement) and has no other means of emergency exit, the window MUST meet IRC R310.1 egress requirements: sill height of 44 inches or less above the floor, clear opening of at least 5.7 square feet, and minimum width and height of 20 inches each. If your existing window meets these minimums, you can replace it with a like-for-like window exempt from permitting. If your existing window's sill is higher than 44 inches (or the clear opening is too small), replacing it with the same size does NOT cure the violation. You'll need a permit to enlarge the opening downward (or relocate it) to bring it into code compliance. Don't assume you can skip the permit; measure first and confirm your existing window meets the 44-inch sill height requirement.
What's the U-factor requirement for replacement windows in Peachtree Corners, and does it affect the exemption?
Peachtree Corners adopted the 2018 International Energy Conservation Code, which requires replacement windows in climate zone 3A to have a whole-window U-factor of 0.32 or better. The like-for-like exemption DOES NOT waive this requirement — it just means you don't have to report the work to the city. The new window must still comply with the energy code. In practice, any modern double-pane, Low-E window from a reputable manufacturer will meet this standard. Check the NFRC label on your replacement window to confirm the U-factor before you buy. Single-pane or very old used windows will likely fall short.
If I'm in the historic district, how long does the Certificate of Appropriateness process take, and does it cost money?
The CoA review typically takes 2–4 weeks, depending on the city's workload and whether your submission is complete on the first try. The application usually costs $0–$50 (check with Planning and Zoning for the current fee). The bulk of the timeline is review by the Planning and Zoning Division, not processing delays. To speed things up, submit a complete application with clear photos of the existing window, detailed specs and color samples of the proposed replacement, and exact measurements. If the city requests revisions (e.g., 'use 6-over-6 muntins instead of single-pane'), responding promptly with updated photos and specs is critical. Plan for a 6–10 week total timeline if you're starting from scratch: CoA application and review (2–4 weeks), window ordering (2–4 weeks if custom), and installation (1 week).
Can I install a replacement window myself, or do I need to hire a licensed contractor?
For like-for-like replacement that doesn't require a permit, you can install the window yourself or hire any contractor you want — a licensed installer is not required. Georgia law (Section 43-41) allows owner-builders to perform residential work without a license. Peachtree Corners follows state law, so no license is necessary for exempt work. However, if your work requires a permit (opening enlargement, basement-bedroom egress compliance, historic-district windows), you may need a licensed contractor for any structural or framing components; check with the Building Department. For safe and code-compliant installation, many homeowners hire a professional installer even when a permit isn't required, because poor installation can lead to water intrusion and damage later.
What happens if I install a window replacement without a permit and later sell my home?
Georgia requires sellers to disclose known unpermitted work on a Seller Disclosure Statement. If you performed unpermitted window replacement and the buyer's lender, inspector, or appraiser discovers it during a home sale, you have three options: (1) obtain a retroactive permit and inspection from Peachtree Corners (if the work is code-compliant), (2) correct or remove the work to match code, or (3) disclose the unpermitted work to the buyer and negotiate a price reduction or credit. A retroactive permit can cost $150–$300 and take 1–2 weeks. Unpermitted work often triggers a price reduction of 3–5% of the home value or a sale delay of several weeks. In the historic district, if you installed a non-compliant window without a CoA, you'll be required to replace it with a compliant window — at your expense — before closing. To avoid these headaches, skip the permit shortcut and follow the rules upfront.
If my window replacement is exempt from permitting, does that mean it doesn't have to meet building code?
No. The exemption means you don't have to file paperwork or get an inspection from Peachtree Corners Building Department. The window itself STILL must comply with all applicable building codes, including the 2018 IECC (U-factor 0.32), IRC R612 (fall protection for tempered glass), and IRC R310.1 (egress requirements if it's a basement-bedroom window). You are responsible for code compliance, even if the city isn't inspecting. If a future lender, appraiser, or home inspector flags a code violation, you'll be responsible for correcting it. Always verify that your replacement window meets current code requirements before you buy and install it.
Are there any energy rebates or incentives in Peachtree Corners for window replacement?
Peachtree Corners doesn't directly offer window-replacement rebates, but Georgia's statewide incentive programs may apply. Check Georgia Power (if you're in their service area) for ENERGY STAR rebates on qualifying windows and insulation upgrades. Georgia also participates in federal tax credits for home energy improvements (IRS Form 5695), which may cover window replacement if the window meets IECC requirements. A replacement window with a U-factor of 0.32 or better typically qualifies. Ask your window supplier whether the product qualifies for any state or federal incentives, and consult a tax professional to determine your eligibility for credits.
What should I do before I order my replacement window to make sure I'm on the right track?
Follow this checklist: (1) Measure the existing window's rough opening (width and height to the nearest 1/8 inch). (2) Call Peachtree Corners Planning and Zoning or check your deed to confirm whether your home is in the historic district. If yes, request the design guidelines and identify your window's original muntin pattern and frame material. (3) If the window is in a basement bedroom, measure the sill height above the floor to confirm it's 44 inches or less; if higher, plan for a permit to enlarge the opening. (4) Obtain a quote and NFRC label from your window supplier confirming the U-factor is 0.32 or better. (5) If in the historic district, prepare a CoA application with photos and specs before ordering. (6) If in the historic district, submit the CoA application and wait for approval before ordering the window. (7) Install or hire an installer. If you need a permit, apply to the Building Department before installation. Don't skip step 2 — the historic district is a hard stop.
More permit guides
National guides for the most-asked homeowner permit projects. Each goes deep on code thresholds, common rejections, fees, and timeline.
Roof Replacement
Layer count, deck inspection, ice dam protection, hurricane straps.
Deck
Attached vs freestanding, footings, frost depth, ledger, height/area thresholds.
Kitchen Remodel
Plumbing, electrical, gas line, ventilation, structural changes.
Solar Panels
Structural review, electrical interconnection, fire setbacks, AHJ approval.
Fence
Height/material limits, sight triangles, pool barriers, setbacks.
HVAC
Equipment changeouts, ductwork, combustion air, ventilation, IMC sections.
Bathroom Remodel
Plumbing rough-in, ventilation, electrical (GFCI/AFCI), waterproofing.
Electrical Work
Subpermits, NEC sections, panel upgrades, GFCI/AFCI, who can pull.
Basement Finishing
Egress, ceiling height, electrical, moisture barriers, occupancy rules.
Room Addition
Foundation, footings, framing, electrical/plumbing extensions, structural.
Accessory Dwelling Units (ADU)
When permits are required, code thresholds, JADU vs ADU, electrical/plumbing/parking rules.
New Windows
Egress, header sizing, structural cuts, fire-rating, energy code.
Heat Pump
Electrical capacity, refrigerant handling, condensate, IECC compliance.
Hurricane Retrofit
Roof straps, garage door bracing, opening protection, FL OIR product approval.
Pool
Barriers, alarms, electrical bonding, plumbing, separation distances.
Fireplace & Wood Stove
Hearth, clearances, chimney, gas line work, NFPA 211.
Sump Pump
Discharge location, electrical, backup options, plumbing tie-in.
Mini-Split
Refrigerant lines, condensate, electrical disconnect, line set sleeve.