Research by DoINeedAPermit Research Team · Updated May 2026
The Short Answer
A full kitchen remodel requires permits in Knightdale if you're moving walls, relocating plumbing, adding electrical circuits, modifying gas lines, venting a range hood to exterior, or changing window/door openings. Cosmetic-only work—cabinet and countertop swaps, appliance replacements, paint, flooring—is exempt.
Knightdale enforces the 2012 North Carolina Building Code (NCBC), which the city adopted with limited local amendments. Unlike some Wake County neighbors (Raleigh, Cary) that maintain their own expansive code departments with online portals and expedited review tracks, Knightdale uses a smaller building staff and typically requires in-person or phone submission of plans. The city does NOT issue same-day or over-the-counter approvals for kitchen work—plan review runs 3 to 6 weeks and is sequential, not concurrent. Knightdale also requires THREE separate permits (building, plumbing, electrical) filed simultaneously or in quick succession; if you submit building first and forget plumbing, the building permit sits incomplete until all three are in queue. The city's permit fee schedule ties directly to project valuation, and kitchen remodels with structural changes, plumbing relocation, and new circuits typically run $500–$1,500 in combined fees. Knightdale is in NCBC Climate Zone 3A/4A, meaning 12–18 inch frost depth and Piedmont/Coastal Plain soils—not exotic, but important if you're pouring new support posts for load-bearing wall removal. The city's building department is accessible by phone and email, and staff are helpful if you call ahead with photos and a scope.

What happens if you skip the permit (and you needed one)

Knightdale full kitchen remodel permits—the key details

The Knightdale Building Department enforces the 2012 North Carolina Building Code (NCBC), which incorporates the International Residential Code (IRC) with North Carolina amendments. For kitchen remodels, the critical trigger is ANY structural change, any plumbing relocation, or any electrical circuit addition. The NCBC defines 'major renovation' (which includes kitchens with plumbing/electrical work) as requiring full permits under NCBC 101.2.3. IRC R602 requires that if you remove or modify any wall that braces the house laterally (load-bearing wall), you must provide engineering or a detailed framing plan showing how the load transfers to the foundation—Knightdale's building staff will request a PE letter or detailed calculations before approving. If you're simply replacing cabinets and countertops in the same footprint, swapping out the old range for a new one on the same circuit, or adding tile backsplash and paint, none of that requires a permit. But the moment you relocate a sink, move the stove, add a new microwave circuit, or vent a range hood through an exterior wall, you've crossed the threshold. Knightdale requires three permits filed together: Building Permit (for structural/general changes), Plumbing Permit (for any fixture relocation or new rough-ins), and Electrical Permit (for any new circuit, GFCI outlet, or appliance circuit changes). You cannot get a Plumbing Permit without a Building Permit number, and the Electrical Permit must reference the same building permit. Most applicants file all three on the same day or within 24 hours to avoid delays.

Plan submission in Knightdale requires scaled floor plans (minimum 1/4-inch = 1-foot) showing kitchen layout, cabinet locations, sink/stove/dishwasher placement, and any walls being removed or modified. For plumbing, you need a separate plumbing plan showing vent stacks, trap arms (minimum 1/4-inch slope toward trap), and sewer/water line routing. For electrical, a single-line diagram showing all new circuits, GFCI outlets, appliance loads, and sub-panel capacity (if applicable) is required. Building plans must note if any walls are load-bearing and, if removed, show the supporting beam size (e.g. LVL 2x10, PSL 1.75x11.875) and bearing details. Knightdale does NOT accept digital submissions via email; you must print plans on 24-inch × 36-inch sheets (or larger), bring them in person to City Hall, or mail them with a completed application form (available on the city website or by phone request). The building department will stamp and date-receipt the plans; expect plan review to take 3 to 6 weeks. If there are deficiencies (missing load-bearing wall engineer letter, plumbing vent detail incomplete, electrical circuit count unclear), the department will issue a written rejection or 'comments' list, and you'll resubmit corrected plans for re-review (another 2–3 weeks). Once all three permits are approved, you'll receive permit cards/numbers to post on site.

Knightdale's permit fee structure is based on project valuation: the building department uses a cost-per-square-foot multiplier (roughly $100–$150 per square foot of kitchen area for remodeling) to calculate the permit base fee (typically $150–$400 for a 100–200 sq ft kitchen), plus separate plumbing and electrical fees (each $75–$250). If a load-bearing wall is being removed, add $200–$400 for the engineering review. Total combined permit cost for a full kitchen remodel usually runs $500–$1,500. The city requires payment when permits are approved, before you receive the permit card; payment is by check or credit card at the building department. Once you've paid and received your permit card, you have 6 months to begin work; the permit is valid for 12 months from issuance, and you must complete work and pass final inspection within that window. If work stalls, you can request a 6-month extension (usually approved without cost), but the overall permit validity doesn't exceed 2 years.

Inspections in Knightdale follow a standard sequence: Rough Plumbing (before walls are closed), Rough Electrical (before drywall/insulation), Framing (if any walls are moved), Drywall/Insulation, and Final. Each inspection must be scheduled by phone or online portal at least 1 business day in advance. The building department typically completes inspections within 2–3 business days of request. For a kitchen remodel, Rough Plumbing focuses on trap-arm slope, vent-stack placement, water-line sizing, and shutoff valves; Rough Electrical checks for proper circuit breaker sizing, GFCI outlet installation (required on all counter receptacles and island outlets per NEC 210.8(A)(6)), and appliance disconnects. Final Inspection verifies that all trades are complete, appliances are installed per manufacturer specs, range hood is vented to exterior (or properly ducted to a soffit), and no code violations remain. If any inspection fails, the inspector will issue a written deficiency list; you correct the issue and re-request inspection (no additional fee). Once Final Inspection is signed off, the permit is closed, and you're legally complete.

Knightdale does not have strict owner-builder licensing restrictions for residential kitchens, meaning you can pull the permit as the homeowner if the property is owner-occupied; however, you cannot hire unlicensed subs to do plumbing or electrical work—those trades must be licensed under North Carolina law (NCLIC for contractors). Plumbing and electrical contractors must be licensed by the state, even if you're the permit holder. If you're installing cabinets, countertops, flooring, or drywall yourself, that's fine. If you're doing the plumbing or electrical yourself (as the owner), North Carolina allows owner-occupied residential work without a state contractor license, but Knightdale's building department may require you to demonstrate competence or pass a 'homeowner electrical knowledge' verification—call ahead to confirm. For kitchen work with gas appliances (gas range, gas cooktop), the work must comply with IRC G2406 (gas appliance connections) and must be performed by a licensed plumber or gasfitter; you cannot DIY a gas line. Lead-paint disclosure is required: if your home was built before 1978, North Carolina law requires you to disclose lead-paint hazard in writing before starting any renovation that disturbs paint. Knightdale's building department will not issue a permit for pre-1978 homes without a signed lead-disclosure form from the homeowner; this is a state requirement, not a city one, but Knightdale enforces it at permit issue.

Three Knightdale kitchen remodel (full) scenarios

Scenario A
Cosmetic kitchen refresh—cabinet/countertop swap, appliance replacement, paint and tile backsplash in a 1990s Knightdale ranch
You're removing the old oak cabinets and Formica countertops, installing new semi-custom cabinetry and quartz counters, replacing the electric range with a new electric range on the same 240V circuit, and adding a subway-tile backsplash and fresh paint. The sink and dishwasher stay in the same locations. The gas water heater and furnace are untouched. This work is entirely cosmetic and does not trigger the permit threshold: no walls are moved, no plumbing is relocated, no new electrical circuits are added (the range is on the existing circuit), and no exterior modifications are made. Knightdale's building department would not require a permit for this scope. You do not need to file any forms. You can schedule the work with your contractor and proceed. Total cost is contractor labor plus materials (cabinets $4,000–$8,000, countertops $2,000–$4,000, appliance $1,200–$2,000, tile/backsplash $800–$1,500, paint $400–$800 = roughly $8,400–$17,100 total), but zero permit fees. Timeline is 2–4 weeks of work, no inspections required. If you sell the house later, you do not need to disclose this as a permitted project because no permit was required. However, if you replaced the old electric range with a gas range, you would need a plumbing/gas permit because that's a new gas line connection—gas work always requires a permit and licensed contractor.
No permit required | Cosmetic work only | Appliance on existing circuit | Plumbing fixtures unchanged | Total project cost $8,400–$17,100 | Zero permit fees
Scenario B
Structural kitchen remodel with wall removal—opening up a 1960s ranch by removing a load-bearing wall between kitchen and dining room, relocating sink and stove, and adding island with new electrical circuits
You're removing a full 18-foot north-south wall that separates the kitchen from the dining room. A structural engineer has determined this is a load-bearing wall (confirmed by the basement posts directly below it). You plan to install a 2x12 PSL beam on each side of the opening to carry the load, supported by 4x4 posts at the ends. You're also moving the sink from the east wall to an island in the center of the new open space, running new plumbing supply and drain lines through the basement. The existing stove stays in place, but you're adding a new 20-amp circuit for a built-in microwave over the stove and a 20-amp circuit for the island countertop receptacles (GFCI-protected). The range hood is being vented through the existing exterior wall on the east side (no new duct penetration, reusing existing duct). This triggers ALL the major permit thresholds: load-bearing wall removal, plumbing relocation, and new electrical circuits. Knightdale will require: (1) Building Permit with structural engineering letter from a PE licensed in North Carolina, showing beam calculations, post sizing, and foundation bearing details; (2) Plumbing Permit with plans showing new supply lines (minimum 3/4-inch copper or PEX), new drain line (minimum 2-inch cast iron or ABS), trap-arm slope (1/4 inch per foot toward the 2-inch vent stack), and vent routing (typically through the roof); (3) Electrical Permit with single-line diagram showing the two new 20-amp circuits, GFCI outlet details, sub-panel capacity confirmation, and appliance disconnects. Plan review will take 4–6 weeks because the structural work requires engineering review. Permit fees will run approximately $800–$1,200 (Building $300–$500 + Plumbing $200–$300 + Electrical $200–$300 + engineering fee $100–$200). Once permits are approved, you'll schedule inspections: Framing (before beam is installed, to verify posts and bearing), Rough Plumbing (before drywall), Rough Electrical (before drywall), Drywall/Insulation, and Final. Total project timeline is 8–12 weeks from permit approval to final inspection. You must have a licensed contractor perform the structural work (beam installation, post setting) and the plumbing work (new drain and supply lines); you cannot DIY the load-bearing wall removal or plumbing relocation. Electrical work can be done by a licensed electrician or by you (as the owner) if you pass Knightdale's homeowner-electrical verification (call ahead). If you sell later, you must disclose this permitted structural work on the Residential Property Disclosure Act form.
Permit required | Load-bearing wall removal | Engineering letter required ($500–$1,000) | Plumbing relocation | New electrical circuits (GFCI-protected) | Combined permit fees $800–$1,200 | Plan review 4–6 weeks | Framing, plumbing, electrical inspections | Licensed contractors required for structural/plumbing
Scenario C
Mid-scope kitchen remodel with plumbing relocation and new range-hood vent—2000s Knightdale home, sink moved, exterior wall duct penetration, same-location stove and appliances
You're relocating the sink from the south wall to the east wall (moving it 8 feet), installing a new range hood with a 6-inch round duct vented through the east exterior wall (cutting a new 8-inch hole through siding and rim board). The stove, dishwasher, and refrigerator remain in their current locations. No walls are being moved or modified (the kitchen layout stays the same). No new electrical circuits are being added—the range hood will plug into an existing outlet on a 20-amp general-purpose circuit, and you're not overloading it. No gas lines are being changed. However, moving the sink triggers a Plumbing Permit: you need to run new hot and cold supply lines (minimum 1/2-inch copper or PEX for the sink supply) from the main water line, and a new 1.5-inch drain line to the existing DWV stack (with proper trap-arm slope of 1/4 inch per foot and a P-trap under the sink). The range-hood duct penetration triggers a Building Permit because you're modifying the exterior wall: the duct hole requires flashing, caulking, and a proper exterior termination cap (with damper). Knightdale requires: (1) Building Permit with exterior-wall detail showing duct penetration, flashing, and cap; (2) Plumbing Permit with plan showing new supply lines, new drain line routing, trap-arm slope, and P-trap details. You do NOT need an Electrical Permit because you're not adding a new circuit—the range hood is plugged into an existing outlet (provided the existing circuit has spare capacity; check with the electrician). Plan review will run 2–4 weeks for this mid-scope work. Permit fees will be approximately $400–$700 (Building $150–$300 + Plumbing $150–$250 + minimal electrical inspection if the department wants to verify outlet capacity). Once permits are approved, inspections will be Rough Plumbing (before drywall), Drywall/Insulation, and Final (to verify duct cap, flashing, supply/drain connections). You can hire a licensed plumber to do the plumbing work or attempt the plumbing yourself if you're the homeowner (though Knightdale may require verification—call to ask). The range-hood duct and exterior cap should be installed by a licensed HVAC contractor or general contractor experienced with ductwork; if done improperly, the exterior termination will leak and void any insurance coverage for water damage. Total project cost is roughly $6,000–$12,000 (plumbing rough-in $2,000–$3,000, range hood and duct $800–$1,500, cabinet/countertop adjustments $1,500–$3,000, finishes $1,700–$4,500), plus $400–$700 in permit fees. Timeline is 4–6 weeks from permit approval to final inspection.
Permit required | Plumbing relocation only | Range-hood exterior duct penetration | No new electrical circuits | Building + Plumbing permits $400–$700 | Plan review 2–4 weeks | Licensed plumber recommended | Exterior flashing/cap critical

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Load-bearing walls and engineering in Knightdale kitchen remodels

Knightdale's most common permit rejection for kitchen remodels is missing or inadequate structural documentation when a load-bearing wall is removed. The 2012 North Carolina Building Code (NCBC), which Knightdale enforces, requires that any removal or modification of a wall that carries roof or floor load must be accompanied by an engineering plan or a detailed framing calculation showing how the load is transferred. In a typical 1960s–1990s Knightdale ranch or split-level, the wall separating the kitchen from the dining room or family room is almost always load-bearing because it supports the roof directly above. The NCBC does not allow the building department to approve a removal on faith; they must see either a PE stamp (Professional Engineer licensed in North Carolina) or the builder's prior-condition framing documentation and the new support design. If you're removing a wall, budget $500–$1,200 for a structural engineer to examine the house, determine the load (using roof dead load + live load snow load for Wake County, approximately 20 psf + 20 psf), size the beam (typically a 2x12 PSL or LVL for spans up to 20 feet), and provide a one-page or two-page letter stamped by the PE. The building department will want to see: (1) existing wall location and framing, (2) new beam type, size, and grade, (3) bearing length at each end (minimum 3.5 inches for a 2x12 beam), (4) post type and size at each bearing point (typically 4x4 solid wood or adjustable post with saddle), (5) foundation bearing confirmation (if posts bear on concrete, are they anchored?), and (6) any HSS or steel column that might replace the posts. Knightdale does not typically require an engineering letter for walls that are clearly non-load-bearing (e.g., a short wall separating the kitchen from a hallway with no roof/floor load above), but the building inspector will determine that on-site; when you submit the permit, assume the wall is load-bearing and provide engineering unless you have clear evidence otherwise (e.g., the wall sits on a floor joist, not a basement beam). A PE letter costs $500–$1,200, and the building department will not issue the Building Permit without it; budget this into your timeline (engineer visits, prepares plans, 1–2 weeks turnaround). Once the permit is approved, a licensed general contractor must install the beam; you cannot hire a carpenter to frame it without oversight, as the framing must match the PE's specifications exactly.

Plumbing relocation in Knightdale kitchens—vent stack, trap-arm, and DWV rules

Kitchen sink relocation is the second-most-common trigger for Knightdale plumbing permits, and it's where many DIYers and unlicensed plumbers stumble. The IRC P2722 (adopted in NCBC) specifies that a kitchen sink drain must have a P-trap (1.5 inches for a residential sink), a trap-arm (the horizontal section from the P-trap to the vent stack), and a vent stack (minimum 1.5 inches for a single sink, or 2 inches if venting multiple fixtures). The trap-arm slope is critical: it must slope toward the trap at a minimum of 1/4 inch per foot and a maximum of 1/2 inch per foot. Pitch too steep and solids drop and clog; pitch too shallow and water sits and siphons the trap seal. Knightdale's plumbing inspector will measure the trap-arm slope on Rough Plumbing inspection—they use a level and tape measure to verify. If the slope is wrong, the permit fails, and you must replumb. If the sink is moving from the south wall to the east wall (as in Scenario C), and the existing vent stack is on the north wall, the trap-arm will run roughly 15–20 feet from the sink to the stack. You must size the drain line accordingly: if the run is under 30 feet, 1.5-inch PVC or ABS is acceptable; if longer, 2-inch is safer. The supply lines (hot and cold) can be 1/2-inch copper, PEX, or PVC (cold only), but the feed lines must originate from the main water supply or a point after the water meter, not from an existing branch line serving another fixture (Knightdale follows IPC, which requires dedicated supply for the kitchen sink). If you're moving the sink to an island in the center of the kitchen (as in Scenario B), the vent stack must run under the island—either through the island cabinet (with access panels for future repair) or routed underneath and then up through the floor/ceiling. A 2-inch vent stack cannot be routed horizontally more than 2 feet before it rises vertically (IRC P2707.1), so plan the vent path carefully. If the island is 4 feet from the main vent stack, you'll need to run the drain under the island and then vertically up, or loop the supply/drain around the island on the floor, which is unsightly and code-violating. The Knightdale plumbing inspector will examine the entire DWV (drain-waste-vent) path on Rough Plumbing inspection, and if vent routing is improper, the permit fails. A licensed plumber will know these rules and will either replumb to code or advise you that the island sink location is not feasible without major structural changes (cutting joists, etc.). Many Knightdale homeowners attempt sink relocation without a permit, discover on resale that the drain/vent is improper, and face a $3,000–$8,000 re-do. Get the plumbing permit and have a licensed plumber do the rough-in.

City of Knightdale Building Department
Knightdale, NC (Call City Hall or visit city website for specific address and building permit office location)
Phone: (919) 266-6090 (main City Hall number; ask for Building Department or Building Permits)
Monday–Friday, 8 AM–5 PM (Eastern Time; verify with building department for exact hours and permit-office availability)

Common questions

Can I do a full kitchen remodel myself without a licensed contractor if I pull the permit as the homeowner?

Partially. North Carolina allows homeowners to perform work on their own occupied home without a state contractor license. However, plumbing and electrical work must still be done by state-licensed contractors OR by you as the owner, provided Knightdale's building department approves (call ahead to confirm homeowner electrical/plumbing eligibility). Gas work (gas range, gas line) must be done by a licensed plumber or gasfitter—you cannot DIY it. If you're doing framing, cabinet installation, tile, drywall, or painting, that's fine. If you're moving the sink or doing drain/supply work, you can attempt it, but Knightdale's plumbing inspector will verify code compliance on Rough Plumbing inspection, and if it fails, you'll be forced to hire a licensed plumber to redo it (and pay for re-inspection). Structural work (load-bearing wall removal and beam installation) must be done by a licensed general contractor; you cannot oversee a friend framing a beam.

Do I really need an engineering letter if I'm removing a load-bearing wall in Knightdale?

Yes. The 2012 North Carolina Building Code (adopted by Knightdale) requires PE-stamped plans or detailed calculations for any load-bearing wall removal. The Knightdale building department will not issue a Building Permit without it. Expect to pay $500–$1,200 for the engineer and 1–2 weeks for the PE to visit, analyze the house, size the beam, and issue the letter. This is non-negotiable; building staff will explicitly request it if you submit a permit application without it.

How long does plan review take for a kitchen remodel permit in Knightdale?

Typically 3–6 weeks for a full kitchen remodel with plumbing and electrical changes. Cosmetic work (no permits) is instantaneous. If your plans have deficiencies (e.g., missing vent-stack detail, load-bearing wall lacking engineer letter), Knightdale will issue a comment list, and you'll resubmit corrected plans for re-review (another 2–3 weeks). Structural work (beam removal) or major plumbing relocation adds 1–2 weeks because the building department's plan reviewer may consult a structural engineer or plumbing inspector. Once permits are approved, you'll receive permit cards and can schedule Rough Plumbing and Rough Electrical inspections.

What if my kitchen plumbing is in the wall (cast iron, no access), and I'm moving the sink?

You'll likely need to route the new drain line through the rim joist (basement/crawlspace) and then up through the wall behind the new sink location. If you don't have access or the wall cavity is too tight, a licensed plumber can advise on alternatives: running the drain down through the floor to the basement, re-routing the vent stack, or installing a pumped-drain system (sump pump) if the sink is lower than the main vent stack. Pumped drains add $1,500–$3,000 and require a separate electrical permit. Knightdale's plumbing inspector will review the proposed routing on the Plumbing Permit plan and flag any issues before work begins.

Do I need a separate permit to vent a range hood through an exterior wall in Knightdale?

Yes—it triggers a Building Permit because you're modifying the exterior envelope (cutting a hole, installing flashing, adding a cap). The Building Permit plan must show the duct size (typically 6 inches round), the exterior wall location, flashing detail, and the termination cap. You do not need a separate HVAC or mechanical permit in Knightdale for a range hood, but the exterior duct termination must meet IRC M1503 requirements: the cap must have a damper, be sealed with caulk and flashing, and be located at least 1 foot from windows/doors. If you're venting the range hood to the attic (not to the exterior), Knightdale will not permit it—that violates code and will fail Final Inspection.

What if I'm only adding a dishwasher in a new location—do I need a permit?

If you're installing a dishwasher in the same location as an existing sink and using the existing supply/drain (or a nearby supply/drain that doesn't require new rough-in), no permit is required. If you're moving the dishwasher to a new cabinet location and need to run new supply and drain lines, a Plumbing Permit is required. The building department considers any plumbing fixture relocation (dishwasher, sink, cooktop, microwave on a new electrical circuit) as a trigger for permitting. Call Knightdale's building department with photos and details if you're unsure.

Is there a lead-paint disclosure requirement for my 1970s Knightdale kitchen remodel?

Yes. North Carolina law (federal EPA RRP Rule) requires disclosure of lead-paint hazard for any renovation of a home built before 1978. Knightdale's building department will require a signed lead-disclosure form before issuing a permit for kitchens in pre-1978 homes. The disclosure is simple (one page) and just acknowledges that the home may contain lead paint and that you've been informed of the hazard. You do not need to test or abate lead paint unless it's disturbed during the renovation; if renovation work will disturb paint (drywall removal, cabinet removal), you may need to hire a lead-abatement contractor (adds $1,000–$3,000 to the project). Ask Knightdale's building staff for the lead-disclosure form when you submit your permit application.

What happens if I finish the kitchen remodel and don't pass Final Inspection—do I have to redo it?

Yes. The Knightdale building department will issue a written deficiency list if Final Inspection fails. Common failures include: range hood not vented to exterior (still venting to attic), GFCI outlets missing on kitchen counters, plumbing trap-arm slope wrong, electrical circuit breaker undersized for the load, or structural beam not bearing properly. You must correct the deficiency and re-request Final Inspection (no additional permit fee, but re-inspection fees may apply—typically $50–$100 per re-inspection). If the deficiency is major (e.g., load-bearing wall beam not installed per engineering), you might be forced to remove drywall, re-frame, and re-inspect. Budget time for at least one round of corrections.

Can I get the Building, Plumbing, and Electrical permits simultaneously, or must I file them in sequence?

Knightdale requires all three permits to be associated with the same building-permit number. In practice, most applicants file the Building Permit first, receive a building-permit number, and then file Plumbing and Electrical permits within 24–48 hours, referencing the building-permit number on each application. Some Knightdale staff may accept all three filed on the same day, but call ahead to confirm. If you submit Building first and then wait 2 weeks before submitting Plumbing, the entire package may be delayed because the permits are linked. File all three within one business day to keep the process moving.

What is the cost difference between a Knightdale kitchen remodel permit and nearby cities like Raleigh or Cary?

Knightdale's fees are generally lower and the process is simpler than Raleigh or Cary, which are larger departments. Knightdale typically charges $500–$1,500 total for a full kitchen remodel permit (all three trades combined). Raleigh and Cary, with larger building departments and expedited-review options, charge similar base fees but may add expedited-review surcharges (15–25% premium for 2-week turnaround). Knightdale's standard 3–6 week plan review is sequential and in-person, whereas Raleigh offers online submission and concurrent review. If you're in a hurry, Knightdale may be slower; if cost is your priority, Knightdale's fees are comparable to neighbors. However, Knightdale does not have the online portal convenience of larger cities—you must call or visit in person to submit plans.

Disclaimer: This guide is based on research conducted in May 2026 using publicly available sources. Always verify current kitchen remodel (full) permit requirements with the City of Knightdale Building Department before starting your project.