Shelton, Washington Building Permit Guide

The City of Shelton’s Community and Economic Development Department reviews plans and issues building, mechanical, plumbing and demolition permits inside the city, and most applications go in through the City’s online Citizen Self-Service portal. Electrical permits and inspections are handled by the state Department of Labor and Industries (L&I), and the nearest L&I office is Olympia-Tumwater, at 7273 Linderson Way SW. Under the 2026 Master Fee Schedule the smallest building permit is $148, and plan review adds 65% of the permit fee.

The department is at Shelton City Hall, 525 West Cota Street, and takes permit and development questions on 360-426-4491 or at permits@sheltonwa.gov; the portal help line is 360-426-9731. Aaron Nix is the Community and Economic Development Director. Shelton, the only incorporated city in Mason County, had 10,921 residents in the Census estimate for 2025; Mason County’s Permit Assistance Center permits the rest of the county.

What requires a building permit in Shelton?

Shelton Municipal Code (SMC) chapter 18.02 adopts the state’s building codes as the City’s Construction Administrative Code, and SMC 18.04.010 changes one residential exemption: a one-story detached shed or playhouse of up to 200 sq ft is exempt only if its sidewalls are no taller than 10 feet and its roof pitch is no steeper than the main building’s (a steeper pitch needs Planning Department approval). The City says that any work not specifically identified as exempt needs a building permit before it starts.

The City’s February 2026 handout on exempt work adds conditions for sheds (a floor no more than 30 inches above grade, no built-in heating, cooking or plumbing, at least 5 feet from other buildings, and nothing in a critical area or floodway) and lists items the adopted code does not: replacement siding, membrane-covered accessory structures up to 576 sq ft, and fences up to 6 feet, where the residential code adopted by SMC 18.02 exempts fences up to 7 feet. Ask the department before relying on a handout item the code does not carry. The handout also notes that footings in Shelton must go 12 inches into undisturbed earth.

What the city decides and what the state holds

SMC 18.02 (Ordinances 1988-0522 of 2022 and 2004-0523 of 2023) adopts the 2021 International Building, Residential, Existing Building, Fuel Gas and Mechanical codes, the Uniform Plumbing Code, the International Fire Code with most of its appendices, the 2021 Washington State Energy Code and the 2021 Wildland-Urban Interface Code. Shelton’s own pieces are the shed condition, the residential tiny house appendix (Appendix AQ), local design values (25 psf ground snow, 35 psf roof snow, 110 mph wind, seismic category D2) and its flood hazard chapter, SMC 18.07, adopted June 21, 2022.

Washington has a mandatory statewide building code under chapter 19.27 RCW that every city and county enforces and may make stricter; electrical permits come from the Department of Labor and Industries unless the city runs its own program or Tacoma Power serves the site. Building codes in Washington

Shelton building department: who handles permitting

Community and Economic Development reviews development applications, runs plan review and inspections, handles code enforcement and writes the comprehensive plan. Fire review of commercial site plans and subdivisions is priced in the same fee schedule, and engineering, right-of-way and utility connections go through the City’s civil review.

Permit types

Residential permits

The portal guides applicants through each permit type, takes the documents and payments, and lets them view and print approved permits and plans. The City moved to this EnerGov portal on March 5, 2024, and anyone who used the old system had to register a new profile with the same email address to see their earlier permits. The document center holds the forms that go with residential work: a Building Permit Owner Affidavit, the special inspections form, simple residential site plan and floor plan guides, a structural investigation report guide for work already built without a permit, and a retaining wall handout.

A new roof or re-roof now needs the City’s Roof Installation Compliance Affidavit, dated October 20, 2026, for both commercial and residential work. The Building Division does not inspect the ice barrier, underlayment, fasteners or the manufacturer’s installation steps, so the owner, authorized agent or, preferably, the roofing contractor signs that those will be installed correctly, and the City will not issue the building permit until the affidavit is in. Builders who repeat a house plan can register it as a stock plan; each later permit pays the full permit fee plus half the plan review fee.

Building or remodeling a home here? Alliance handles residential permit applications, so the crew isn't waiting on the counter.

Commercial permits

Commercial projects usually begin with a pre-submission conference ($160) and site plan review ($1,272). Applications for a change of ownership, use or tenant improvement have their own form, a commercial or industrial building can start early under an early foundation permit (25% of the building permit fee, credited back on full submittal), and the fire review of commercial site plans costs $496. A commercial re-roof is priced on valuation using per-square values in the fee schedule.

For tenant improvements and new commercial builds, Alliance handles commercial building permits through issuance. More on this: commercial building permits explained.

What comes before the building permit

Planning approvals come first where they apply: a residential fence permit ($78; commercial $191), a shoreline statement of exemption ($180) or substantial development permit ($594, or $2,438 when a public hearing is required) under the City’s Shoreline Master Program, SEPA review ($371), and conditional use or variance permits. Fences follow SMC 20.36.130: 42 inches in the front yard, which is the 10 feet next to the street (both street sides on a corner lot), and 6 feet in side and rear yards, with front-yard hedges also capped at 42 inches. Work in a mapped flood zone falls under SMC 18.07. Public water and sewer connections need a utility connection application ($180 plus meter and general facility charges for water; $69 plus general facility charges for sewer), and a site on septic needs a permit from Mason County Environmental Health.

Shelton permit costs and fees

The City Council passed Resolution 1408-1025 on December 2, 2025, setting the 2026 Master Fee Schedule and replacing Resolution 1348-0924; it took effect on January 1, 2026. Valuation for houses and major remodels comes from the International Code Council’s Building Valuation Data, updated each September 1 from the August edition; garages, storage buildings and greenhouses are valued as utility buildings, and remodels of less than half a building are valued at 50% of the table rate. The schedule’s note reads: “Washington State surcharge applies: Commercial $25.00, Residential $6.50”.

Worked example. A new house valued at $350,000 falls in the $100,001 to $500,000 band: $1,089 plus 250 × $7 ($1,750) gives a building permit fee of $2,839. Plan review at 65% adds $1,845.35 and the residential state surcharge $6.50, for $4,690.85 before plumbing and mechanical permits, the L&I electrical permit and the traffic impact fee, which the 2026 schedule sets at $4,645.17 for a single-family house. The bands do not chain (the $100,001 band restarts at $1,089), so each value is priced inside its own band.

Refunds are limited: none once work has begun, a written request must reach the City’s finance department within 180 days of issuance, approved refunds are capped at 50% of the building, plumbing and mechanical permit fees, and plan review fees are never refunded.

Trade permits and who may pull them

Mechanical and plumbing permits are City permits at $148 each plus unit fees: $21 for each furnace, heater, appliance vent, plumbing fixture or building sewer, $5 per gas outlet for the first four, and $297 per propane tank. A wood stove or insert in a site-built house is a City mechanical permit, while one in a manufactured or mobile home needs an L&I alteration permit. Shelton is not on L&I’s list of cities that run their own electrical program, so all electrical permits and inspections inside the city are L&I’s. For contractor registration and the trade certificates, see our Washington guide’s licensing summary.

How to apply for a Shelton building permit

Review, corrections and what causes delay

Changes to plans after submittal are billed at $148 an hour. Work started before a permit is issued is billed as an investigation at $148 an hour with a two-hour minimum. Unpermitted work that already exists may need a structural investigation report under the City’s 2026 guide before it can be permitted, and decisions can be appealed to the hearing examiner for $530.

Inspections in Shelton

The City’s March 2026 residential inspection checklist sets the usual order for a new house: setbacks and layout, footings, stem walls, foundation drainage and underground utilities, under-slab or under-floor framing, shear walls, the house wrap and window flashing, a combination framing inspection with rough plumbing, mechanical and gas piping tests, insulation, gypsum board and the final. Each inspection must be passed before the work is covered, the approved plans must be on site, and the street address must be visible from the road throughout construction. Inspections outside business hours (8 a.m. to 5 p.m., Monday to Thursday) cost $148 an hour.

The Building Division issues a certificate of occupancy on request; otherwise the approved final inspection serves as confirmation of occupancy. L&I inspects the electrical work separately, and on a re-roof the affidavit stands in for the parts of the roof the City does not inspect.

Shelton permit search and official resources

Permit holders see their applications, inspections and documents in the Citizen Self-Service portal; other permit records are requested from the City. Shelton is listed by FEMA as participating community 530116, with a June 20, 2019 effective map, and building in a mapped flood zone follows SMC 18.07.

• Shelton Citizen Self-Service permit portal
• Portal account set-up instructions
• Planning and building permits, applications and forms
• 2026 Master Fee Schedule, Resolution 1408-1025 (PDF)
• Work exempt from building permit handout, February 2026 (PDF)
• Roof installation compliance affidavit, October 2026 (PDF)
• Fences and hedges quick guide (PDF)
• Residential inspection checklist (PDF)
• SMC 18.02, Construction Administrative Code
• SMC 18.04, amendments to the residential code
• Community and Economic Development Department
• Mason County Environmental Health (septic)
• L&I list of cities with their own electrical permits

Shelton building permit FAQ

Who issues building permits in Shelton?

The City’s Community and Economic Development Department at City Hall, 525 West Cota Street (360-426-4491), through its Citizen Self-Service portal. Electrical permits come from L&I.

Do I need a permit to replace my roof in Shelton?

Yes. A residential re-roof is $297 in 2026, and since October 2026 the City will not issue the permit until a signed roof installation affidavit is on file.

Do I need a permit for a shed?

Not for a one-story shed of up to 200 sq ft with sidewalls of 10 feet or less and a roof no steeper than the house’s; it must still meet setbacks.

When does a fence need a permit?

When it is within 10 feet of a street or access easement, within 30 feet of a street corner, or in a critical area or buffer. Front-yard fences are limited to 42 inches.

How much is a building permit for a new house?

For a $350,000 house, $2,839 plus $1,845.35 plan review and the $6.50 state surcharge under the 2026 schedule, before trade permits and the $4,645.17 traffic impact fee.

Does Shelton issue a certificate of occupancy?

On request. Otherwise the approved final inspection serves as confirmation of occupancy.

Simplify Shelton permitting with Alliance Permitting

Alliance Permitting is a permit documentation and submission company in Washington. We prepare your paperwork, file it correctly and coordinate with the permitting authority through issuance. We are not a contractor and we do not perform licensed plan review or inspections; that work stays with your licensed team and the jurisdiction.

This guide is provided by Alliance Permitting for general information about Shelton permitting. Requirements, fees, and procedures change; confirm details with the permitting authority before relying on them.