City of Renton building permits: fees, timelines & requirements (2026)
What needs a permit in City of Renton and what triggers one — each row quoted from the city's own code or permit page, with the source linked and the source page checked daily for changes. Fees and review times appear where the city publishes them. Covers ADU, addition, kitchen, bathroom, basement, deck, fence, siding, windows, flooring, roofing, HVAC, electrical, plumbing, and ancillary permits (King County).
21 of 24 project types have authoritative rules on file · 12 always require a permit · 10 depend on the scope · 1 do not.
Get your lot in 3D with zoning, setbacks, and the exact permits your project needs — cited to City of Renton's source.
Permit department
Renton uses TRAKiT permits portal.
Adopted code cycles
2021 IRC w/ WA amendments · 2021 WSEC
Resources
Construction permits
| Project | Permit? | Threshold | Fee | Review days | Source |
|---|---|---|---|---|---|
| Kitchen remodel | Depends on scope | No permit for cabinets, counters, paint or tile. A permit once you move plumbing, add circuits, run gas or change walls. Cosmetic-only refresh (cabinets, countertops, flooring, paint) without structural/electrical/plumbing changes is generally exempt under 2021 IRC R105.2 (work exempt from permit). Any new circuit, fixture relocation, or structural change requires permits. | Fees set by jurisdiction. WA Building Code Council surcharge: $6.50 per building permit. Trade permits separate. Apply via https://permits.rentonwa.gov. | Not published by the city | Cite verified 2026-09-24 |
| Bathroom remodel | Depends on scope | No permit for tile, paint or a same-spot fixture swap. A permit once plumbing moves, circuits are added or the tub or shower goes. Like-for-like fixture replacement in same location with no plumbing rerouting and no new circuits: typically exempt under 2021 IRC R105.2(2)(g). Any relocation, new fixture, new circuit, or shower-pan replacement triggers permits. | Fees set by jurisdiction. Plus separate electrical, plumbing, and mechanical permits. Apply via https://permits.rentonwa.gov. | Not published by the city | Cite verified 2026-09-24 |
| Basement finish | Always | Finishing a basement into habitable space needs a building permit; egress and ceiling height are the usual review items. 2021 IRC R310: every sleeping room below grade requires emergency escape and rescue opening (egress window). Min sill height 44in, min net clear opening 5.7 sq ft (5.0 grade-floor), min width 20in, height 24in. Ceiling height min 7ft (R305). Entire newly conditioned area must comply with WSEC R402. | Plan-review fee scales with valuation. State surcharge $6.50. Apply via https://permits.rentonwa.gov. | Not published by the city | Cite verified 2026-09-24 |
| Deck | Depends on scope | Exempt only when all three hold: 30 in or under, not over a basement or story below, not part of an accessible route. A deck is exempt only if 30 inches or less above grade, not over a basement/story below, and not part of an accessible route (RMC 4-5-060 §105.2). Above 30 inches a building permit is required; guards are required at walking surfaces over 30 inches. | Most jurisdictions handle decks as field-inspection or simplified plan review. Apply via https://permits.rentonwa.gov. | Not published by the city | Cite verified 2026-09-24 |
| Fence | Depends on scope | No permit for a fence 6 ft or under. A fence taller than 6 feet requires a building permit (or a written exemption from the Building Official); fences 6 feet and under are exempt. Front-yard setback fences are limited to 48 inches and clear-vision areas to 42 inches (RMC 4-4-040). | Typically no fee unless permit required. Apply via https://permits.rentonwa.gov. | Not published by the city | Cite verified 2026-09-24 |
| Siding | Depends on scope | Non-structural siding is exempt; veneer, stucco or EIFS needs a permit. Replacement of nonstructural siding on IRC structures is exempt, except for veneer, stucco, or exterior finish and insulation systems (EFIS), which require a permit. | Typically minimal fee — like-for-like usually exempt. Apply via https://permits.rentonwa.gov. | Not published by the city | Cite verified 2026-09-24 |
| Window replacement | Depends on scope | In-kind replacement is exempt when the opening and framing are unchanged. Enlarging an opening needs a permit. In-kind window/door replacement is exempt when openings are not increased, no structural members are altered, the U-value meets the prescriptive WSEC requirement, and safety glass is provided where required. Enlarging an opening requires a permit. | Like-for-like usually no permit fee. Structural changes scale with valuation. Apply via https://permits.rentonwa.gov. | Not published by the city | Cite verified 2026-09-24 |
| Flooring | No permit | Flooring is finish work and exempt. Floor finish work (carpet, tile) is exempt finish work, provided existing required accessible features are not altered. | No permit fee for surface flooring. Apply via https://permits.rentonwa.gov. | Not published by the city | Cite verified 2026-09-24 |
| ADU / DADU | Always | An ADU or DADU always needs a building permit, and usually trade permits with it. Renton allows two accessory dwelling units (attached or detached) per legal lot (RMC 4-2-110A, Ord. 6160, 6-16-2025). Onsite owner-occupancy is not required and both units may be rented (HB 1337). Renton retained a 1,000 sq ft ADU maximum; ADU follows the residential-zone development standards (e.g., 5 ft side yard). The building plan-check fee is $0 for ADUs built through Renton's Permit-Ready ADU (PRADU) program. | Full Construction Permit (Addition/Alteration) fees. A new ADU connection commonly also triggers a ONE-TIME sewer and/or water connection charge from the utility that serves the property — called a general facility charge, a capacity charge or a system development charge depending on the utility. WHICH UTILITY AND WHICH CHARGE IS A PER-PROPERTY FACT, not a city or county one, and a single lot can sit inside a city for permitting and outside its sewer district. Ask the utility that will actually serve the ADU; this charge is often the largest single line in an ADU budget after construction. Apply via https://permits.rentonwa.gov. | Not published by the city | Cite verified 2026-09-24 |
| Roofing | Depends on scope | In-kind re-roofing is exempt unless the sheathing is removed or replaced. In-kind re-roofing of one- and two-family dwellings is exempt provided the roof sheathing is not removed or replaced; otherwise a permit is required. | Flat fee or valuation-based, per the city's fee schedule. Apply via https://permits.rentonwa.gov. | Not published by the city | Cite verified 2026-09-24 |
| HVAC | Depends on scope | Fixed systems — furnace, heat pump, AC, ducts, gas piping — need a mechanical permit; portable appliances are exempt. A mechanical permit is required for fixed systems (furnace, heat pump, A/C, ducts, gas piping); portable heating/cooking/clothes-drying appliances are exempt. Emergency replacement requires an application the next business day. | Mechanical permit + electrical permit (if new circuit) + plumbing permit (if condensate to drain). Apply via https://permits.rentonwa.gov. | Not published by the city | Cite verified 2026-09-24 |
| Electrical | Always | Electrical work needs a permit, administered by WA L&I. Electrical work requires a permit; in Renton the City building permit covers structure while electrical permits/inspections are administered by Washington State Labor & Industries. | Electrical permit fees are set by circuit count and service size in the issuing agency's fee schedule. Apply via https://permits.rentonwa.gov. | Not published by the city | Cite verified 2026-09-24 |
| Plumbing | Depends on scope | New or rearranged piping needs a permit, and replacing a defective concealed pipe counts as new work. Stopping leaks and clearing stoppages are exempt. New or rearranged piping requires a plumbing permit; stopping/repairing leaks and clearing stoppages are exempt, but removing and replacing a defective concealed trap, drain, water, soil, waste, or vent pipe is "new work" requiring a permit. | Plumbing permit fees are set by fixture count in the city's fee schedule. Apply via https://permits.rentonwa.gov. | Not published by the city | Cite verified 2026-09-24 |
| Addition | Always | Adding floor area always needs a building permit. Additions always require a building permit — they are expressly excluded from "ordinary repairs" (RMC 4-5-060 §105.2.2). Work started without a permit is subject to a special investigation fee equal to twice the permit fee. | Plan-review fee scales with valuation per UBC Table 1-A. State surcharge $6.50 per building permit. Trade permits (E/P/M) separate. Apply via https://permits.rentonwa.gov. | Not published by the city | Cite verified 2026-09-24 |
Ancillary & non-building permits
| Project | Permit? | Threshold | Fee | Review days | Source |
|---|---|---|---|---|---|
| Demolition | Always | Demolishing a structure or a substantial part of one needs a permit; asbestos and lead notifications are separate. 2021 IBC Section 105.1 + WA-adopted IRC R105.1: demolition of any structure or portion thereof requires a permit. Tear-out of interior finishes only is generally treated as alteration. Asbestos / lead notification often required separately under WAC 173-303 / 296-62. | Demolition fees commonly charged as flat fee or by structure size. State surcharge $6.50 applies. Apply via https://permits.rentonwa.gov. | Not published by the city | Cite verified 2026-09-24 |
| Right-of-way | Always | Any work in or occupation of the public right of way needs a right-of-way permit from public works. Issued by city public works (or SDOT in Seattle) under local ROW ordinance. Triggered by physical occupation of or work within the public ROW including driveway aprons, curb cuts, sidewalk replacement, utility tie-ins, hauling routes, and temporary construction staging. | Right-of-way permit fees vary by city: a base fee for a residential driveway or curb cut, plus a per-day occupancy charge if the street is obstructed. Apply via https://permits.rentonwa.gov. | Not published by the city | Cite verified 2026-09-24 |
| Side sewer | Always | A new side-sewer connection, a repair beyond about 2 ft, relining or capping needs a permit from whichever utility owns the main. The side-sewer permit is issued by whichever utility owns the sanitary sewer — the city, a sewer or water district, or a regional utility — under that utility's own code, with WAC 51-56 (2021 UPC) governing how the building sewer is laid. WHICH UTILITY IS A PER-PROPERTY FACT: a lot can sit inside a city for permitting and outside its sewer district, so confirm the owner of the main before applying. Triggered by a new connection, repair of more than about 2 ft of pipe, relining (CIPP), or capping at the property line for a demolition. | Side-sewer permit fees are set by the utility that owns the main; some add a depth-based surcharge. Utility-issued, not building-permit-issued. Apply via https://permits.rentonwa.gov. | Not published by the city | Cite verified 2026-09-24 |
| Stormwater / drainage | Always | New or replaced impervious surface and land disturbance are reviewed under the drainage manual this jurisdiction adopts; the threshold is the manual's. Ecology's Stormwater Management Manual for Western Washington (SWMMWW, 2024 edition) is the state floor. A municipal stormwater permittee may instead adopt a REGIONAL manual Ecology has determined equivalent, and most do — some counties publish their own, some cities publish their own, and others adopt Ecology's directly. WHICH MANUAL APPLIES IS A PER-JURISDICTION FACT and it changes the numbers: review thresholds for new plus replaced impervious surface and for land-disturbing activity differ between manuals, so read this jurisdiction's own adopting chapter before quoting one. Critical-area and closed-basin parcels get stricter review under every manual. | Drainage review fees are commonly tiered by project size in the city's fee schedule. Apply via https://permits.rentonwa.gov. | Not published by the city | Cite verified 2026-09-24 |
| Land-use / zoning | Always | A variance, conditional use, plat or design review is a land-use decision that precedes the building permit. Triggered when a project does not conform to the strict letter of the zoning code. Variances require a hardship finding under most city codes. Design review thresholds vary (Seattle: most multifamily + non-residential >4,000 sqft; many cities: design review only in designated districts). | Land-use fees vary widely; a variance usually carries an application fee plus cost recovery for the hearing examiner. Apply via https://permits.rentonwa.gov. | Not published by the city | Cite verified 2026-09-24 |
| Tree removal | Depends on scope | Removing more than two significant trees (6 in caliper, 8 in for alder and cottonwood) in a calendar year needs a Routine Vegetation Management Permit. Removal of more than two (2) significant trees within a calendar year requires a Routine Vegetation Management Permit (RVMP). A significant tree is a caliper of at least 6", except alder and cottonwood which qualify at 8". A landmark tree is a caliper of 24" or greater, except Big Leaf Maple, Black Cottonwood, and Red Alder which qualify at 30" or greater. Removal of a high-risk tree must be certified by an arborist holding the ISA Tree Risk Assessment Qualification (TRAQ), limited to three (3) high-risk trees in a one-year period and only where no landmark trees are proposed for removal. Retained and replacement trees must be maintained in perpetuity from the date of the final land development permit. | Tree-removal permit fees are set per permit or per tree in the city's fee schedule; some cities require replacement bonds. Apply via https://permits.rentonwa.gov. | Not published by the city | Cite verified 2026-09-24 |
| Signs | Always | Permanent signs need a sign permit; small temporary residential signs are usually exempt. City sign code (typically Title 22 or 23) governs. Wall, freestanding, projecting, awning, and electronic message signs all require permits. Most cities exempt small temporary residential signs (real-estate, political) under area thresholds (~6 sqft). | Sign permit fees are set in the city's fee schedule, plus an electrical sub-permit for an illuminated sign. Apply via https://permits.rentonwa.gov. | Not published by the city | Cite verified 2026-09-24 |
Building in City of Renton?
Kolmo Construction is a licensed Washington general contractor — KOLMOL*753JS, bonded and insured — working throughout City of Renton and King County. We pull the permits listed above and build the project.
How this page is built
Each row is the most-recently-verified authoritative rule on file for City of Renton and the listed project type. “Pending verification” means we have City of Renton in our database but haven't yet personally checked the city page for that project — those rows fall back to King-County or Washington-state baselines until verified.
See the data-quality leaderboard for how we keep these current, or run an address-specific lookup on the main permits page.