Do I need a permit for a full kitchen remodel in
Dover, New Hampshire?

Dover, NH kitchen remodel permits — the key details

Dover Building Department administers the 2015 International Residential Code (IRC) as adopted by New Hampshire, with local amendments. The critical rule is this: any modification to the kitchen's electrical system (adding a circuit, moving an outlet, upgrading service to appliances), plumbing system (relocating supply lines, drains, or vents), or structure (removing or relocating walls, altering openings) requires a separate permit in that trade. A 'full kitchen remodel' almost always means at least two of these — typically electrical and plumbing, plus building if walls move. Dover does not issue a single 'kitchen remodel permit'; instead, you'll file a building permit (scope: walls, openings, structural changes), electrical permit (scope: circuits, outlets, appliances ≥240V), and plumbing permit (scope: supply, drain, vent changes). If you're adding a range hood with exterior ducting, that's also mechanical permit territory. Owner-occupants can pull the building permit themselves, but electrical and plumbing permits in Dover are typically pulled by the licensed contractor doing that work — verify with the Building Department on the owner-builder exemption for these trades, as New Hampshire law allows it but cities can restrict it.

The electrical rules are strict. Kitchen counter outlets must be GFCI-protected and spaced no more than 48 inches apart (IRC E3801). You need two dedicated 20-amp small-appliance branch circuits for countertop receptacles alone (IRC E3702.1) — this is the #1 plan-rejection reason in Dover. Your electrician must show on the permit plan where these two circuits are located, which breaker positions they occupy, and confirmation that they do not serve any other loads. If you're adding a dishwasher or garbage disposal, those are separate circuits (15-amp minimum for disposal, 20-amp for dishwasher per IRC E3802). Any 240V appliance (electric range, wall oven) needs its own circuit sized to the nameplate amperage. Dover inspectors will not sign off on rough electrical without a one-line diagram showing panel capacity, breaker amperage, and wire gauges — not just 'electrician will install per code.'

Plumbing relocation is equally prescriptive. If you're moving the sink, you must show on the plumbing plan the supply line routing (hot and cold separate, or one line with mixing valve), trap location (P-trap must be no more than 24 inches below the drain opening per IRC P2717), and vent routing (the vent must rise to daylight and cannot be trapped below the crown weir — IRC P3101). A common rejection: showing the sink drain location but not the vent stack or confirming it ties to an existing vent. Garbage disposals add 1.5 DFU (drainage fixture units) and need proper grading to the trap. If your kitchen is on a second floor or you're relocating a vent line, you'll need to show the entire vent path from the fixture to the roof or wall penetration. Dover inspectors will ask for details on how the vent exits the exterior wall — does it terminate at least 10 feet from doors, windows, or property lines? Will you install a roof flashing or wall vent cap? These aren't optional; they're IRC R802 and P3103 requirements, and your plan must show them.

Load-bearing wall removal in a kitchen is routine but requires engineering. If you're opening up the kitchen by removing a wall between the kitchen and dining room, Dover Building Department will require a stamped structural engineer's letter or detailed beam-sizing calculations showing that the new header and bearing support can carry the load above. This is not something the Building Department guesses at — bring a PE letter, or expect a plan rejection. The letter should specify header size, beam type (LVL, steel, or site-built), bearing length, and installation details. Do not assume a builder's 'standard' header will pass; Dover is thorough on this, especially if the wall runs perpendicular to floor joists.

Finally, lead-paint disclosure is mandatory in Dover if your home was built before 1978. You must disclose that the kitchen contains lead-based paint (if applicable), provide the EPA pamphlet, and allow a 10-day inspection period if a buyer is involved. Some homeowners skip this thinking a 'permitted remodel' avoids it — wrong. The permit process does not waive lead disclosure; in fact, a permitted remodel makes the disclosure more visible during title work. If you're renovating and not disclosing, that's a state and federal liability, not just a permit issue. Plan for the disclosure upfront.

Three Dover kitchen remodel (full) scenarios

Dover's 48-inch frost depth and plumbing vent routing through exterior walls

Dover is in IECC Climate Zone 6A with a 48-inch frost line. This matters for kitchen plumbing because if you're relocating a sink and venting through an exterior wall (rather than through the roof), that vent termination cap must be above the frost line or protected from frost damage. In practice, most Dover kitchens vent through the roof or into an interior chase that extends to the roof; venting through an exterior wall below the sill is rare but possible if the vent cap is a dry-break type. The Building Department's plumbing section will flag any vent termination below 2 feet above grade on an exterior wall — not because of the IRC (which doesn't explicitly forbid it), but because of freeze-thaw damage and ice damming observed in this climate. If you're venting through the exterior wall, plan for a vent cap with a flapper (damper) that resists frost buildup. If you're on a second floor and routing a new vent down through the wall, the plumbing inspector will ask if the vent is insulated or protected — it's not code-mandated, but a frozen vent stack is a dead sink, and Dover inspectors know this.

Conversely, if you're venting the new vent through the roof, the roof flashing detail is scrutinized. Dover gets heavy snow, and a poorly sealed roof penetration is a leak waiting to happen. Your plumbing plan must show the flashing type (metal with rubber boot is standard), diameter (typically 4 inches for a kitchen vent), and pitch (should be near-vertical, not splayed). The plumber will submit the rough plumbing inspection request, but the Building Department often schedules that inspection before the roofer installs the flashing — so the vent must be roughed in and ready, with a temporary cap. Once the roof is closed, the inspector may request a final inspection of the flashing. This adds an extra step and timeline; don't assume the plumber and roofer will coordinate without prompting.

If you're relocating the kitchen sink and the new location is farther from the main vent stack than the old location, you may be in the 'wet vent' gray zone. A wet vent (IRC P3104) allows a toilet to serve as a vent for downstream drains if certain distance and diameter rules are met — but a kitchen sink cannot be vented by a toilet directly below it. If there's no vent stack nearby and you can't add a new roof penetration (e.g., because it's a second-floor interior kitchen), the options are: (1) run a 1.5-inch drain line horizontally to an existing stack with proper pitch, (2) install a 1.5-inch vent line inside a wall to the roof, or (3) use a mechanical vent valve (air-admittance valve per IRC P3114) — but Dover's code adoption and local amendments must permit this. Check with the Building Department before assuming an AAV will be approved; some jurisdictions restrict them. The plumbing permit will specify which approach is allowed.

Dover's panel review timeline and owner-builder vs. licensed contractor permits

Dover Building Department offers both in-person permit intake (at City Hall, contact the Building Department for hours) and online submissions through the Dover permit portal. Full kitchen remodels are not 'over-the-counter' projects — they require plan review by the Building Department's engineer or plan examiner, electrical inspector (if pulling an electrical permit), and plumbing inspector. The baseline timeline is 3–6 weeks for initial plan review. If there are rejections (e.g., missing load-bearing wall calculation, counter-outlet spacing not shown, range-hood duct termination detail missing), each round of resubmission adds 5–10 business days. To avoid delays: submit complete, legible floor plans at 1/4-inch scale, one-line electrical diagram, plumbing riser with fixture locations and vent routing, and any structural calculations or PE letters upfront. Dover does not do 'preliminary review' — the first submission is the full review, so make it count.

On the owner-builder question: New Hampshire law allows an owner-occupant to pull a building permit for their own home and do the work themselves or hire contractors. Dover follows state law, so technically you can pull the building permit yourself. However, the electrical and plumbing permits are trickier. New Hampshire does allow owner-builders to pull electrical permits (with limitations), but Dover's practice is to require that the electrician pulling the permit be licensed (Master or Journeyman) if they're doing the work on your behalf — i.e., you hire a licensed electrician, they pull the permit and do the work. Similarly for plumbing. Check with the Dover Building Department directly before you assume you can pull an electrical permit yourself and hire an unlicensed person to wire the kitchen. If you hire a licensed electrical contractor, they'll pull the permit on your behalf (and bill you for it). If you do the electrical work yourself, you may be able to pull an owner-builder permit, but Dover does not always allow this for full kitchen remodels; some cities restrict it to additions and new construction. Call ahead.

Fee structure: Dover charges permit fees based on valuation or a flat rate per permit type. A full kitchen remodel is typically valued at $30–$75 per square foot of kitchen floor area (not the whole house). If your 150-sq-ft kitchen is remodeled at $60/sq-ft, the valuation is $9,000; permit fee would be around 1–2% of valuation, or $90–$180 for building alone. Electrical and plumbing permits are often flat-rate ($150–$300 each) or a percentage of work cost. Mechanical permits (range hood vent) are usually $50–$150. Total permit fees for a mid-range full kitchen: $400–$800. If the project is high-end (custom cabinetry, high-end appliances, extensive structural work), the valuation and fees climb. Ask the Building Department to estimate the fee before you submit; some applicants pull permits and are surprised by the bill.

Inspection scheduling: Once a permit is issued, you'll call the Building Department to schedule inspections. Dover typically has a 2–5 day window to request an inspection, and inspectors visit within 2–5 business days (sometimes longer if there's a backlog). You need five inspections minimum: rough framing (if walls move), rough electrical, rough plumbing, drywall, and final. Schedule them in sequence — you can't drywall until rough electrical and plumbing are approved. This matters for timeline; if you schedule all at once, you'll miss windows and have to re-schedule. Work with your contractor to schedule in batches: framing-only first, then utilities (electrical and plumbing together on a second visit, if possible), then drywall. Final is done after everything is painted and appliances are installed.

Common questions