Bolthole Index

Grant County, Washington

Building permits, zoning and land rules in Royal City, Washington

Royal City, Washington uses a city building-permit application and has adopted the state building code.12 Inside Royal City in Grant County, the city sets zoning; Grant County Health District handles on-site septic permitting.34 Temporary RV occupancy is prohibited in R-1 and requires conditional approval with restrictive eligibility criteria in the other listed residential zones.5

At a glance

Building permits
City application, construction inspections and occupancy approval167
Zoning
City residential-use table controls allowed and conditional uses3
Septic permits
Grant County Health District; confirm sewer service first48
RV living
Temporary occupancy prohibited in R-1; restrictive conditional pathway elsewhere5
Minimum lot size
R-1/R-2: 7,000 square feet; R-3: 6,000 square feet; S-1: 1 acre, with exceptions9
Owner-builder
State contractor-registration exemption is conditional; building requirements remain10

Who to call

Building permits

City of Royal City — Building Permit Application

City building application and construction inspection requirements

509-346-2263

Planning & zoning

Royal City City Hall

Starting contact for city zoning, building-official and public-works questions

(509) 346-2263

Septic permits

Grant County Health District — On-Site Septic Applications

On-site septic applications, site and soil evaluation requirements

509-766-7960

Contact details are copied from each office’s official page and were checked against it on October 11, 2026.

Off-grid gear

Going off-grid in Royal City means bringing your own water and power. The kit we’d start with:

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Do you need a building permit in Royal City, WA?

Royal City publishes its own building-permit application, and buildings inside city limits are subject to the city’s adopted state building code.12 Royal City building-permit and plan-review fees vary with construction valuation and the specified work or equipment; the building official determines the valuation used.11

Royal City applicants must request inspections at construction stages and give the building inspector at least 1 day’s notice.6 Before a residential, commercial or industrial building is used or occupied, Royal City requires a certificate of occupancy issued or deemed issued by the building official, with all prerequisite conditions satisfied.7

Who handles Royal City building and zoning questions?

Start with Royal City City Hall at (509) 346-2263 and ask for the building official or the contact handling your zoning question.12 Use the city’s building-permit application for the proposed work; Royal City requires buildings to conform to submitted plans and approval before plan or layout changes.1

Washington’s owner-builder exemption concerns contractor registration for qualifying work on your own property, with restrictions on work for sale, demolition or lease; the exemption does not remove building, trade, land-use or inspection requirements.10 Ask the Royal City building official which separately regulated work your project requires.

Does Royal City have zoning, minimum lot sizes and height limits?

Royal City’s residential land-use table identifies uses allowed outright, allowed conditionally or prohibited, so the parcel’s zoning district determines the land-use answer.3 In Royal City, minimum lot sizes are 7,000 square feet in R-1 and R-2, 6,000 square feet in R-3, and 1 acre in S-1.9 R-1 and R-2 lots platted before 1961 have a 6,000-square-foot exception, and certain platted nonconforming lots may qualify under additional performance criteria.9

Royal City’s listed residential zones limit primary structures to 30 feet, with conditional exceptions allowing 35 feet.13 Ask City Hall to confirm the parcel’s district, setbacks and any exception before choosing a house footprint.

Can you live in an RV or tiny home in Royal City?

Royal City prohibits temporary RV occupancy in R-1 and treats temporary RV occupancy as conditional in R-2, R-3 and S-1.5 The conditional pathway requires a nonprofit applicant and a construction project requiring a conditional-use permit, plus setback, fire-access, duration, RV-unit, cleanup and solid-waste conditions.5 A private buyer should not assume that a building permit alone authorizes living in an RV during construction.5

Washington recognizes code-compliant tiny houses, including qualifying houses on wheels, but foundation, installation and location remain subject to local building requirements.14 We could not confirm Royal City’s specific tiny-home occupancy or minimum dwelling floor-area rules; ask the city building official before buying a tiny house.

How do septic permits and sewer approval work in Royal City?

Grant County Health District handles on-site septic applications, and installing a septic system requires site and soil evaluations.4 Washington requires an on-site sewage permit before covered installation, repair or modification work begins, except for a minor repair.15 Most on-site septic systems must be installed by an installer certified by Grant County Health District.4

Royal City requires plans submitted to the public works director, approval, a building-sewer permit and payment of required charges before covered sewer-facility construction, installation or operation.8 Ask city public works about sewer availability and the health district about septic eligibility before commissioning a design. We could not confirm permission for off-grid sanitation inside Royal City; ask both offices.

Building a home in Royal City: what should you do first?

First, ask City Hall to identify the zoning district and review the proposed use against Royal City’s residential-use table.3 Next, discuss sewer facilities with city public works and any proposed septic system with Grant County Health District before finalizing the site plan.84 Royal City encourages an informal development meeting and requires formal preapplication meetings for development applications other than building and mobile-home placement permits.16

Submit the city building application, obtain approval before changing plans, schedule construction inspections and satisfy occupancy conditions before moving in.167 For land outside city limits, use the Grant County guide: county building review covers unincorporated Grant County.17

Watch-outs

  • Royal City may terminate city utility services for occupancy without the required certificate of occupancy.7
  • We could not confirm Royal City’s private-well, driveway-access or floodplain-development requirements; ask City Hall which approvals apply before buying.12
  • Washington’s domestic groundwater permit exemption allows up to 5,000 gallons per day per project, but additional local requirements and state water-law restrictions can still apply.18

Sources

  1. City of Royal City — Building Permit Application (royalcitywa.org)
  2. Royal City Municipal Code § 14.04.030—Standard codes adopted (Royal City), quoted and re-checked
  3. Royal City Municipal Code § 17.20.030—Allowed uses (Royal City), quoted and re-checked
  4. Grant County Health District — On-Site Septic Applications (granthealth.org)
  5. Royal City Municipal Code § 17.20.030—Allowed uses (Royal City), quoted and re-checked
  6. City of Royal City Building Permit Application (Royal City), quoted and re-checked
  7. Royal City Municipal Code § 14.04.040—Amendments (Royal City), quoted and re-checked
  8. Royal City Municipal Code § 12.10.100—Administration (Royal City), quoted and re-checked
  9. Royal City Municipal Code § 17.20.050—Development standards for residential zones (Royal City), quoted and re-checked
  10. RCW 18.27.090 — Exemptions (Washington statewide rule), quoted and re-checked
  11. Royal City Municipal Code § 14.04.040—Amendments (Royal City), quoted and re-checked
  12. Royal City City Hall (royalcitywa.org)
  13. Royal City Municipal Code § 17.20.050—Development standards for residential zones (Royal City), quoted and re-checked
  14. Tiny Houses (Washington statewide rule), quoted and re-checked
  15. WAC 246-272A-0200 Permit requirements (Washington statewide rule), quoted and re-checked
  16. Royal City Municipal Code § 18.05.020—Preapplication meetings (Royal City), quoted and re-checked
  17. grantcountywa.gov (2026 county census)
  18. Groundwater permit exemption (Washington statewide rule), quoted and re-checked

Written October 11, 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.

Answers from the rulebook for Royal City

Royal City’s own rules

  • Building code adoptedAdopted (with conditions)

    Buildings within Royal City city limits.

    • The city additionally adopts specified state-code appendixes and other listed codes; its amendments govern as stated in Chapter 14.04.
    “Pursuant to RCW Chapter 19.27 and RCW Chapter 35A.12 the state building code is established.”
  • InspectionsRequired

    Construction under a City of Royal City building-permit application.

    • Applicant must call for inspections at various construction stages and give the building inspector at least one day's notice.

    inspection notice: >= 1 day (Notice to building inspector for activities requiring inspection.)

    “The application is required to call for inspections at various stages of the construction”
  • Certificate of occupancyRequired

    Any residential, commercial, or industrial building in Royal City before use or occupancy.

    • Certificate may be actually issued or deemed issued by the building official, but all conditions precedent are prerequisites to occupancy.
    • Occupancy without a certificate can result in termination of city utility services.
    “a certificate of occupancy must be issued or deemed to have been issued”
  • Local zoningPresent (with conditions)

    Land inside Royal City city limits.

    • Uses are allowed outright, conditionally, or prohibited according to the residential land-use table and applicable code standards.
    “The Residential Land Uses Table indicates where categories of land uses may be permitted and whether those uses are allowed outright or by conditional use permit.”
  • Minimum lot sizeDistrict specific (with conditions)

    Residential zones R-1, R-2, R-3, and S-1 inside Royal City city limits.

    • R-1 and R-2 minimum lot size is 7,000 square feet; R-3 is 6,000 square feet; S-1 is one acre.
    • R-1 and R-2 lots platted before 1961 have a 6,000-square-foot exception; certain platted nonconforming lots of at least 5,000 square feet may receive a building permit if stated performance criteria are met.

    R-1 minimum lot size: 7000 square feet (6,000 square feet for lots platted before 1961.) · R-2 minimum lot size: 7000 square feet (6,000 square feet for lots platted before 1961.) · R-3 minimum lot size: 6000 square feet · S-1 minimum lot size: 1 acre

    “Minimum lot size (in square feet) 1 7,000 7,000 6,000 1 acre”
  • Lot coverageDistrict specific (with conditions)

    Multifamily structures in the R-3 residential zone inside Royal City city limits.

    • The table specifies no general maximum lot-coverage standard for R-1, R-2, or S-1 in that row.
    • Accessory structures in R-1, R-2, and R-3 are subject to separate stated limits, including a 35-percent building-coverage condition for a listed exception.

    maximum lot coverage for multifamily structures in R-3: <= 50 percent

    “Maximum lot coverage for multi-family structures —— —— 50% ——”
  • Building heightDistrict specific (with conditions)

    Primary residential structures in R-1, R-2, R-3, and S-1 zones inside Royal City city limits.

    • Maximum primary-structure height is 30 feet in each listed residential zone.
    • A primary structure may reach 35 feet subject to the applicable increased-side-setback and, where stated, minimum-lot-size conditions; listed exempt structures may exceed 30 feet if specified conditions are met.

    maximum primary-structure height: <= 30 feet (Table 2 exceptions permit up to 35 feet under stated conditions.)

    “Maximum height of primary structure 7 30′ 8 30′ 8 30′ 8 30′”
  • Living in an RVLimited

    Temporary occupancy of a recreational vehicle in Royal City residential zones.

    • The use is prohibited in R-1 and conditional in R-2, R-3, and S-1.
    • Conditional-use criteria include nonprofit applicant status, a request associated with a construction project requiring a conditional-use permit, compliance with stated setback/fire-access requirements, a duration no longer than the building permit, specified number of RV units, site cleanup, and a solid-waste plan.
    “Temporary occupancy of recreational vehicle 1 X C C C”
  • Accessory dwellingsAllowed (with conditions)

    Accessory dwelling units for immediate family members requiring daily care, supervision, or guardianship in Royal City residential zones.

    • The residential use table allows this specified accessory-dwelling use in R-1, R-2, R-3, and S-1.
    • Larger accessory dwellings or ones on vacant lots require city-council deviation under the stated review criteria.
    “Accessory dwelling unit for immediate family member”
  • Mandatory utility hookupConditional

    Construction, installation, or operation of public or governed private sewer facilities inside Royal City city limits.

    • Before construction, installation, and operation, the owner or developer must submit plans to the public works director, obtain approval and a building-sewer permit, and pay required fees and charges.
    • This source does not establish a general mandatory water or sewer connection-distance rule for every new home.
    “obtain a building sewer permit and pay all required fees and charges”
  • Permit feesVariable (with conditions)

    City building permits inside Royal City city limits.

    • The building official determines valuation used to compute building-permit and plan-review fees; the amount varies with total construction value and specified work/equipment.
    “building permit and building plan review fees”
  • Permit processPublished (with conditions)

    Development applications inside Royal City city limits, except building and mobile-home placement permits.

    • An informal meeting is encouraged before formal preapplication.
    • Every other person proposing development must attend the formal preapplication meeting, where requirements, fees, review process, schedule, and applicable regulations are discussed.
    “with the exception of building permits and mobile home placement permits, shall attend a preapplication meeting.”

Still unanswered

We looked and could not find an official answer yet. Silence is not permission; ask Royal City or Grant County directly.

  • Owner-builder exemption — Owner-built residential construction inside Royal City city limits.
  • Minimum dwelling size — Minimum dwelling floor area inside Royal City city limits.
  • Tiny homes — Tiny-home occupancy inside Royal City city limits.
  • Off-grid sanitation — Off-grid sanitation for homes inside Royal City city limits.
  • Well permit — Private wells inside Royal City city limits.
4 more unanswered
  • Agricultural exemption
  • Driveway access
  • Building in a floodplain
  • Short-term rentals

Each answer was extracted from an official source and independently re-checked against that source by a second reviewer. That is an evidence check, not legal advice. Rules change; confirm with the authority before you buy or build.

Unanswered questions are usually a sign that Royal City publishes no rule on the point, not that none exists. Grant County’s page lists the county offices to call.

← All of Grant County: county rules, score and offices