Do I need a permit for a full bathroom remodel in
Dunwoody, Georgia?

Dunwoody full bathroom remodel permits — the key details

Dunwoody Building Department requires a permit whenever you relocate a plumbing fixture, add new electrical circuits, install new ventilation, change the tub-to-shower configuration, or move any walls. The IRC standard for bathroom GFCI protection (IRC E3902) mandates that all receptacles within 6 feet of a sink, tub, or shower be GFCI-protected, and Dunwoody inspectors will verify this on the electrical plan before issuance. If you're adding a bathroom exhaust fan or replacing an existing one with a new duct run, IRC M1505 requires the duct to terminate outside (not into an attic or unconditioned space), and the inspector will confirm duct sizing (typically 4-6 inches diameter) and slope (minimum 1/8 inch per foot). Shower and tub enclosure waterproofing is governed by IRC R702.4.2, which specifies either cement board plus membrane, or one of the newer synthetic waterproofing systems—Dunwoody inspectors will ask for the specific brand and installation method in the permit submittal, and many plan reviews are delayed because homeowners don't specify this detail upfront. Lead-based paint (LBP) rules apply if your home was built before 1978: you must comply with EPA RRP (Renovation, Repair, and Painting) rules, which require certified contractors and lead-safe work practices—this is a Georgia/federal requirement, not Dunwoody-specific, but it adds a compliance layer that affects contractor selection and project timeline.

The plumbing changes in a full remodel often involve trap arm extensions (the horizontal drain line from the fixture to the vent stack). IRC P2706 limits trap arm length to 6 feet for a standard 1.5-inch fixture drain; if your bathroom is far from the existing vent stack, you may need to install a new vent (wet-venting or individual vent), which adds complexity and cost. Dunwoody's online permit portal requires you to submit a plumbing plan showing fixture locations, drain runs, vent routing, and fixture specifications (including pressure-balanced mixing valves for tub/shower, which are now code-required for anti-scald protection). Many homeowners miss this: you must also show water-supply lines (hot and cold) and confirm shutoff valve locations. The city does allow owner-builder permits under Georgia Code § 43-41, meaning a homeowner can pull permits and do the work themselves, but the homeowner must be on-site during inspections and is liable for code compliance—if plumbing or electrical is rejected, the owner-builder must hire a licensed contractor to remediate.

Exhaust fan ventilation is a common rejection point in Dunwoody. The duct cannot tie into a soffit vent or crawlspace; it must penetrate the roof or exterior wall and terminate at least 10 feet away from windows, doors, and property lines. If your bathroom is on the second floor and the attic is unconditioned, running the duct through the attic without a vent-damper and insulation will fail inspection because moisture can condense and pool in the attic framing (a serious mold and wood-rot risk in Georgia's humid climate). Dunwoody inspectors will verify duct material (smooth metal or rigid plastic, not flex except in short runs), slope toward the exterior termination, and damper operation. Many DIY installs use inline dampers that don't close properly when the fan is off, leading to backdraft and energy loss—the inspector will test it. If you're converting a tub to a walk-in shower, the waterproofing assembly becomes critical: cement board alone is not acceptable under current code; you must use a waterproofing membrane (Redgard, Schluter-Kerdi, or equivalent) applied over the cement board or substrate, with careful attention to pan installation and slope (minimum 1/4 inch per foot toward the drain). Dunwoody's 3A climate means this is taken seriously—condensation and mold in poorly sealed showers are expensive to remediate.

Dunwoody's permit fees are calculated as a percentage of the project valuation (not a flat fee). A full bathroom remodel is typically valued at $5,000–$20,000+ depending on scope; the permit fee will be roughly 4–6% of that valuation, working out to $200–$800 in most cases. Dunwoody also assesses separate plan-review and inspection fees, which can add $100–$200 to the total. The timeline from initial submission to final sign-off typically runs 2–5 weeks for plan review (assuming no resubmissions), plus 1–2 weeks for scheduling inspections after work is complete. If you need a design change mid-project, you'll file an amendment, which may trigger another 1–2 week review. Dunwoody's online portal allows you to track status and upload revisions; many homeowners find this faster than in-person visits to the building department. However, the city does not offer 'over-the-counter' permits for bathrooms—all work requiring plumbing, electrical, or structural changes must go through formal plan review. This is a key distinction from some neighboring DeKalb County jurisdictions that allow streamlined filing for small work scopes.

Dunwoody sits in a region with Piedmont geology (red clay, granite bedrock north of the Chattahoochee River) and is served by both city and county utilities depending on your address. If your home is on DeKalb County water/sewer, you may need to coordinate with the county's utility office to confirm that your new plumbing ties into the public system correctly—this is not Dunwoody's direct responsibility but can affect your plumbing permit timing if the county issues a letter of compliance. The city's building department is located at Dunwoody City Hall (address available on the city website); their phone line and online portal are the primary contact points. You can submit permits online, upload plans as PDFs, pay fees electronically, and receive plan-review comments via the portal. Site visits by the building official are typical during rough plumbing, rough electrical, framing inspection (if walls are moved), and final. If you're doing the work yourself as an owner-builder, you must be present for all inspections and answer questions about materials and methods. Hiring a licensed general contractor, plumber, and electrician is common and often simplifies the approval process because licensed professionals have established relationships with the inspectors and know local expectations.

Three Dunwoody bathroom remodel (full) scenarios

Dunwoody's plan-review process and online portal: what to expect

Dunwoody Building Department accepts permit applications through its online portal, which is the fastest path to approval. You create an account, upload PDF plans (plumbing, electrical, framing, and a site plan showing the bathroom location), enter basic project info, and pay fees electronically. The portal then routes your application to the appropriate reviewers (plumbing plan reviewer, electrical plan reviewer, and building plan reviewer if structural changes are involved). Each reviewer adds comments directly in the portal, and you're notified by email when feedback arrives. Most bathroom remodels receive comments on their first submission—this is normal and not a rejection. Common first-review comments include: 'Specify waterproofing membrane brand and method' (for shower conversions), 'Show duct termination point on roof plan' (for exhaust fans), 'Confirm trap arm length does not exceed 6 feet' (for relocated drains), and 'Verify GFCI protection on all receptacles per NEC Article 210.8(A)(1)' (for electrical). You then revise your plans, upload the resubmission, and re-submit. The second review typically takes 1–2 weeks and often results in approval. If there are no further comments, you receive a permit-ready notice in the portal, pay any additional fees if applicable, and print your permit document. This entire online process can be completed from home without visiting City Hall.

The advantage of Dunwoody's online system is speed and documentation—everything is timestamped and traceable. The disadvantage is that you must be thorough in your initial submission; submitting incomplete plans (e.g., no waterproofing system specified) will trigger a resubmission cycle. Many homeowners benefit from hiring a designer or architect to prepare the plans even for modest remodels; a professional plan set typically costs $500–$1,500 and includes all required details, reducing rejection risk. If you're working with a licensed contractor or plumber, they often handle the plan preparation and permit coordination as part of their contract. The city does offer pre-application consultations by phone or in-person at City Hall; calling ahead with photos and a description of your scope can sometimes surface issues before you invest in detailed plans.

Once your permit is approved and issued, you can begin work. You'll receive a permit document (either printed or digital) that must be displayed at the work site. Dunwoody Code Enforcement occasionally checks active work sites; if they find unpermitted work, they'll issue a stop-work order on the spot. After rough work is complete (plumbing rough-in, electrical rough-in, framing if applicable), you call Dunwoody Building Department to schedule inspections. The rough plumbing inspector will verify trap arm lengths, vent routing, and drain slopes. The rough electrical inspector will verify GFCI protection and circuit sizing. The rough framing inspector (if applicable) will verify wall removal and any structural changes. These inspections typically occur within 3–5 business days of your request. Once rough inspections pass, you can proceed to drywall, tile, and finishing. The final inspection occurs after all work is complete and all materials are installed; the inspector verifies that the exhaust fan is operational, outlets function, and no code violations are visible. Final approval typically arrives within 5 business days, and the permit is marked 'closed' in the city's system. A copy of the final permit is added to your home's record at Dunwoody Building Department and becomes part of your home's history—important for future sales or refinancing.

Waterproofing, exhaust ventilation, and Georgia humidity: why Dunwoody inspectors scrutinize these details

Dunwoody's warm-humid climate (climate zone 3A, average annual humidity 60–70%) means that bathroom moisture control is critical to preventing mold, rot, and structural damage. The IRC R702.4.2 waterproofing requirement for shower and tub enclosures exists everywhere, but in Georgia it's enforced with extra scrutiny because moisture intrusion leads to rapid mold growth in the framing and subfloor. Dunwoody's building inspectors will ask you to specify your waterproofing system in detail: if you're using cement board (which is standard for most remodels), you must pair it with a liquid waterproofing membrane (Redgard, Schluter-Kerdi-Board, or equivalent), not just grout and caulk. The membrane must be applied to all walls and the floor pan, with particular attention to corners, penetrations (drain, valve), and seams. Tiles are then installed over the membrane. This two-layer system (cement board + membrane) is mandatory for IRC compliance; cement board alone is not waterproof and will lead to failure. Many DIY installers and inexperienced contractors skip the membrane, assuming that grout is waterproof—it is not. Dunwoody inspectors will either require proof of membrane installation at rough inspection or will reject the final if waterproofing is inadequate. The cost of a quality membrane (Redgard or equivalent) is typically $30–$80 for a 5x8 bathroom, a small price compared to the $5,000–$15,000 cost of remediating mold and water damage.

Exhaust fan ventilation is another high-scrutiny item. The IRC M1505 requirement is that bathrooms have a mechanical ventilation system (exhaust fan) that removes moisture to the outdoors—not to an attic, crawlspace, or soffit vent. Georgia's humid climate means that if the duct discharges into an attic, the moisture will condense on roof decking, trusses, and insulation, creating mold colonies within weeks. Dunwoody inspectors will verify on your plans that the duct terminates through the roof or through an exterior wall, at least 10 feet away from windows and doors. The duct must be rigid or smooth-flex metal (not vinyl flex, which collapses and traps moisture), with a minimum slope of 1/8 inch per foot toward the exterior termination. The duct damper must close when the fan is off, preventing backdraft and air leakage. Proper sizing is important: a bathroom with a toilet, tub, and shower should have a fan rated for 80 CFM (cubic feet per minute) or higher, per ASHRAE standards. Undersized fans (40–50 CFM) are common in older homes and contribute to moisture buildup. Dunwoody does not typically mandate fan replacement in existing installations if the duct is properly routed, but if you're installing a new fan as part of a remodel, the inspector will confirm it meets current CFM requirements. Many homeowners invest in a humidity sensor-controlled fan, which runs only when moisture rises above a threshold—this is not required by code but is a smart upgrade in Georgia's climate.

The combination of waterproofing and ventilation creates a defense-in-depth strategy for moisture control. If waterproofing is installed correctly, water that does penetrate the tile will be contained and directed to the drain. If ventilation is adequate, airborne moisture (steam) will be exhausted outdoors rather than condensing in the bathroom envelope. In Dunwoody's humid environment, both are essential. Homeowners who skimp on either often experience mold issues within 2–3 years, leading to costly remediation. The permit and inspection process exists partly to prevent this outcome. When an inspector verifies waterproofing details and duct termination, they're protecting your investment and your home's long-term health. This is why Dunwoody building officials take these details seriously—they've seen the consequences of moisture failure in too many homes.

Common questions