Building permits, zoning and septic rules in Selah, Washington

At a glance

Building permits

Required before new construction and additions¹

Zoning

City zoning applies inside Selah²

Septic

Yakima Health District approval; sewer availability may prevent septic³

Building inspections

Required before concealment; schedule with city Building⁴⁵

Tiny homes

State building-code compliance and local location approval apply⁶

Owner-builder

Conditional contractor-registration exemption; building permits still apply⁷

Building permit fees

Based on proposed construction valuation⁸

Who to call

Contact details are copied from each office’s official page and were checked against it on October 14, 2026.

Do you need a building permit in Selah, WA?

Selah requires a building permit before new construction, additions and other listed construction work inside city limits.¹ Selah lists an exemption for a one-story detached residential accessory structure up to 200 square feet, but separate plumbing, electrical and mechanical permits remain necessary unless independently exempted.¹ A small shed exemption therefore does not answer whether utility work is exempt.¹ Washington’s conditional owner-builder exemption concerns contractor registration; building permits, land-use requirements and inspections still apply to an owner-built Selah home.⁷

Who issues building permits in Selah, and how do you apply?

Selah Building Department handles new buildings, remodels, plumbing, mechanical work and water and wastewater connection permits.⁵ Apply through the city’s SmartGov portal, creating and verifying an account before submitting the building permit application.⁵ Selah offers paper submissions, but the city says paper processing takes longer and all plans are reviewed digitally.⁵ Call 509-698-7365 or email [email protected] for building application questions.⁵ Selah building permit fees depend on the valuation of the proposed work, calculated using construction type and cost per square foot; ask Building for a project-specific estimate.⁸

Does Selah have zoning, and can you live in an RV or tiny home?

Selah’s zoning ordinance regulates residential, commercial, industrial and agricultural development inside city limits.² Ask Selah Planning to identify the parcel’s district and provide the applicable lot-size, setback, lot-coverage and height standards before choosing a house footprint.² We could not confirm Selah’s private-lot RV occupancy rules, temporary camping limits or numeric dimensional standards; ask city Planning about the proposed use and parcel.⁹ Washington recognizes a code-compliant tiny house of no more than 400 square feet, including kitchen, bathroom and sleeping/living space, but local approval still governs installation and location in Selah.⁶ A wheeled structure may instead be classified as an RV or park model.⁶

How do septic permits work inside Selah?

Yakima Health District administers septic approval and inspection in Yakima County; Selah’s building permit does not replace that health approval.¹⁰¹¹ For a proposed Selah septic system, first resolve sewer availability: septic may not be allowed where public sewer is available or within a city utility service area.³ Where septic is allowed, a site-and-soil evaluation precedes design, and the application must include the design and fee before the Health District issues the septic permit.³ Yakima Health District completes a final inspection before the system is covered.¹² Selah Building separately handles wastewater connection permits.⁵

Building a home in Selah: what are the steps?

Start with the parcel and the proposed use, then keep land-use approval, wastewater approval and construction approval as distinct decisions.²³¹

1. Ask Selah Planning about city zoning and submit applicable land-use applications through SmartGov.²⁹
2. Resolve sewer service before commissioning a septic design; if septic is allowed, obtain Yakima Health District design approval and a septic permit before installation.³
3. Submit the building permit application through Selah’s SmartGov portal and obtain approval before construction.⁵¹
4. Keep printed approved digital plans at the job site and arrange city inspections before concealing work.⁵⁴
5. Give at least 24 hours’ notice for city building inspections; ask Building which final approvals the home needs before occupancy.⁴

What stays with Yakima County, and what should you check before buying in Selah?

Septic review stays with Yakima Health District, while Selah handles city building permits, water and wastewater connection permits, and city land-use applications.¹¹⁵⁹ For land outside Selah city limits, use the Yakima County guide for the county’s unincorporated-area building and zoning rules.¹³¹⁴ Before buying a Selah parcel for off-grid water, distinguish a water-right exemption from approval of the proposed well and development: Washington’s domestic groundwater exemption is limited to 5,000 gallons per day per project, and other laws and local requirements can impose additional limits.¹⁵ Ask Selah Planning and Building to resolve the parcel’s land-use and utility questions before relying on an off-grid plan.⁹⁵

Watch-outs

• A Selah shed that is exempt from a building permit can still need separately regulated plumbing, electrical or mechanical permits.¹
• We could not confirm Selah’s RV living rules or manufactured-home siting requirements; ask Selah Planning before buying for either use.⁹
• Selah Planning reports that its ADU legislative review has a December 2026 deadline; ask Planning for current requirements before designing an accessory dwelling.⁹
• Selah building permit applications can be deemed abandoned after 180 days unless pursued in good faith, and a building permit becomes invalid if work does not start within 180 days of issuance.¹⁶

Sources

1. City of Selah Building Guide Packet (Selah), quoted and re-checked
2. City of Selah Building Guide Packet (Selah), quoted and re-checked
3. Building a New Septic System, quoted and re-checked
4. City of Selah Building Guide Packet (Selah), quoted and re-checked
5. Selah Building Department (selahwa.gov)
6. Tiny Houses (Washington statewide rule), quoted and re-checked
7. RCW 18.27.090 — Exemptions (Washington statewide rule), quoted and re-checked
8. City of Selah Building Guide Packet (Selah), quoted and re-checked
9. Selah Planning (selahwa.gov)
10. Building a New Septic System, quoted and re-checked
11. Yakima Health District Environmental Health Help Desk (yakimacounty.us)
12. Septic Systems, quoted and re-checked
13. Homeowners Guide to the Building Process, quoted and re-checked
14. Title 19 Unified Land Development Code, quoted and re-checked
15. Groundwater permit exemption (Washington statewide rule), quoted and re-checked
16. City of Selah Building Guide Packet (Selah), quoted and re-checked

Written October 14, 2026 from the rules quoted below, each taken from an official source and re-checked by an independent reviewer. This is research, not legal advice: rules change, so confirm with the office before you buy or build.