Building permits, zoning and septic rules in Spokane Valley, Washington

At a glance

Building permits

Required for new homes, garages, additions and remodels¹

Zoning

City zoning applies inside Spokane Valley²

Septic permits

Spokane Regional Health District; approval before covered construction⁴⁶

Sewer permits

Spokane County Utility Department⁵

Tiny houses

State building-code compliance and local location/installation approval⁷

Owner-builder

Conditional contractor-registration exemption; building permits still apply⁸

Permit payment

Application fees before processing; 2.5% credit card/online convenience fee⁹

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 Spokane Valley, WA?

Spokane Valley requires residential building permits for new single-family homes, duplexes, garages, additions and remodels; the city also lists decks, pools, spas and fences as permit projects.¹ A pole building needs engineered drawings, and the residential application requires a copy of the sewer permit.¹ Washington’s state building code applies in cities as well as counties.¹⁰ An owner working on their own property may qualify for Washington’s contractor-registration exemption when the work is not for sale, demolition or lease, but that exemption does not remove building permits or inspections.⁸

Who issues building permits in Spokane Valley?

Start with the Spokane Valley Permit Center at 509-720-5240 or [email protected] for city building applications.³ Spokane Valley recommends its online permit portal, with PDF forms available for customers who do not use the portal.¹¹ Application fees must be paid before processing, and credit card or online payments carry a 2.5% convenience fee that does not apply to cash or checks paid at the Permit Center.⁹ Construction inspections can be requested through the portal or the city inspection request line, 509-720-5350.¹²

Does Spokane Valley have zoning, lot-size rules and setbacks?

Spokane Valley administers city zoning inside its boundaries, and the city processes subdivisions and boundary line adjustments through its land-use and development-engineering permit system.²¹³ Ask the Spokane Valley Planning & Zoning Division at [email protected] to identify the parcel’s district and confirm the proposed home’s setbacks, minimum lot size, height and lot coverage; we could not confirm those district-specific limits here.¹⁴ Washington subdivision approval requires a finding that the proposal conforms to applicable zoning or land-use controls, so a proposed lot split needs its own approval rather than just a building application.¹⁵

How do septic permits work inside Spokane Valley?

Spokane Regional Health District issues septic permits for new on-site sewage systems and changes to existing systems in its Spokane County service area.⁴ Washington requires approval before installation, repair, modification, connection or expansion of a septic system, except minor repairs.⁶ The septic application includes the drinking-water source, sewer-utility status, soil and site evaluation, site plan and system design.⁶ Existing septic systems also require ongoing operation and maintenance inspections through Spokane Regional Health District.¹⁶ Sewer and septic have different counters: Spokane Valley’s residential application page directs sewer permits to Spokane County Utility Department.⁵

Can you live in an RV or tiny home in Spokane Valley?

We could not confirm Spokane Valley’s rules for living in an RV on a private lot or camping while a home is under construction; ask the city Planning & Zoning Division about the proposed occupancy before buying.¹⁴ Washington recognizes tiny houses, including houses on wheels, that meet the state building code, but foundation, installation and location still require local building-department approval.⁷ A wheeled structure that does not meet the tiny-house definition may instead be an RV or park model.⁷ Ask the Spokane Valley Permit Center to confirm the approval path for the specific structure and parcel.³

Building a home in Spokane Valley: what comes first?

Begin by asking Spokane Valley Planning & Zoning to confirm the parcel’s zoning and proposed use.¹⁴ Resolve wastewater next: the residential application requires a sewer-permit copy, while covered septic construction needs prior health approval.¹⁶ Submit the city building application through the recommended online portal and pay application fees before processing.¹¹⁹ Include the city approach-permit application if the project adds or revises a driveway approach.¹⁷ During construction, request the required inspections; Spokane Valley issues a certificate of occupancy for new buildings and additions after final approval of all associated permits.¹²¹⁸

What stays with Spokane County, and what should Spokane Valley buyers check?

Spokane Valley building approval does not replace Spokane County sewer permits or Spokane Regional Health District septic approval.⁵⁴ For a parcel outside city limits, use the Spokane County guide for the county’s unincorporated-area building requirements.¹⁹ For a proposed well, Washington’s domestic groundwater exemption covers up to 5,000 gallons per day per project, with multiple wells aggregated; other water-law and local requirements still apply.²⁰ Ecology requires a notice of intent 72 hours before drilling, and that notice does not approve water use.²⁰ Ask the city about grading and floodplain review when considering site work, which Spokane Valley lists in its development-engineering applications.¹³

Watch-outs

• We could not confirm Spokane Valley’s RV occupancy, temporary camping or district-specific setbacks and lot sizes; ask the city Planning & Zoning Division before committing to a parcel.¹⁴
• A building application’s sewer-permit requirement is separate from septic approval through Spokane Regional Health District.⁵⁴
• Washington’s owner-builder exemption concerns contractor registration and does not eliminate city building permits or inspection requirements.⁸

Sources

1. Residential Building Permits - City of Spokane Valley (Spokane Valley), quoted and re-checked
2. Apply for a Permit - City of Spokane Valley (Spokane Valley), quoted and re-checked
3. Spokane Valley Permit Center (spokanevalleywa.gov)
4. New Systems or Changes to Existing Systems, quoted and re-checked
5. Spokane Valley Residential Building Permits (spokanevalleywa.gov)
6. WAC 246-272A-0200 Permit requirements (Washington statewide rule), quoted and re-checked
7. Tiny Houses (Washington statewide rule), quoted and re-checked
8. RCW 18.27.090 — Exemptions (Washington statewide rule), quoted and re-checked
9. Apply for a Permit - City of Spokane Valley (Spokane Valley), quoted and re-checked
10. RCW 19.27.031 — State building code—Adoption—Conflicts—Opinions (Washington statewide rule), quoted and re-checked
11. Apply for a Permit - City of Spokane Valley (Spokane Valley), quoted and re-checked
12. Apply for a Permit - City of Spokane Valley (Spokane Valley), quoted and re-checked
13. Apply for a Permit - City of Spokane Valley (Spokane Valley), quoted and re-checked
14. Spokane Valley Planning & Zoning Division (spokanevalleywa.gov)
15. RCW 58.17.030 — Subdivisions to comply with chapter, local regulations (Washington statewide rule), quoted and re-checked
16. On-Site Septic Operations and Maintenance, quoted and re-checked
17. Apply for a Permit - City of Spokane Valley (Spokane Valley), quoted and re-checked
18. Apply for a Permit - City of Spokane Valley (Spokane Valley), quoted and re-checked
19. Residential Building Permits, quoted and re-checked
20. Groundwater permit exemption (Washington statewide rule), 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.