Building Safety in Grant County, WA (2026)
4 rules for unincorporated Grant County, Washington.
Verified from official government sources
Fire Sprinkler Requirements
New one- and two-family homes and townhouses in unincorporated Grant County need an automatic fire sprinkler system under Grant County Code § 14.04.030(1)(j) whenever the home will operate as a short-term rental or tops 3,600 square feet without enough fire flow to meet NFPA 1142.
Grant County Residential Fire Sprinkler Rule
Some RestrictionsGrant County Code §§ 14.04.030(1)(j), 15.04.010
(j)AV107.1 Fire Sprinklers.An approved automatic fire sprinkler system shall be installed in new one-family and two-family dwellings and townhouses in accordance with appendix U when any one of the following applies:1.The residential dwelling is proposed to be constructed as a Hospitality Commercial Establishments—Transient Residence per the Unified Development Code Section 23.08.220(c);2.The r...
Building Permits
Grant County requires a building permit for construction under the adopted International Building and Residential Codes at GCC 14.04.030, administered by the Development Services building official. Small detached accessory structures of 200 square feet or less are exempt, and every other permit runs against strict abandonment and expiration deadlines.
Grant County Building Permit Requirements
Some RestrictionsGrant County Code § 14.04.050
1.[A]105.3.2 and R105.3.2 Time limitations of application. An application for a permit for any proposed work shall be deemed to have been abandoned 180 days after the date of filing unless such application has been pursued in good faith or a permit has been issued; except that the building official is authorized to grant one or more extensions of time for additional periods not exceeding 180 da...
Plumbing Permits
Plumbing work in unincorporated Grant County falls under the Uniform Plumbing Code, adopted by reference at GCC 14.04.030(d), except for the code's own sewer and fuel-gas piping provisions, which the county leaves out. A permit from Development Services is required before the work begins.
Grant County Plumbing Permit and Code
Some RestrictionsGrant County Code § 14.04.030
(d)Except as provided in RCW 19.27.170, the Uniform Plumbing Code and Uniform Plumbing Code Standards, published by the International Association of Plumbing and Mechanical Officials with appendices E and K: provided that any provisions of such code affecting sewers or fuel gas piping are not adopted;
Building Inspections
No structure in unincorporated Grant County can get final approval or a certificate of occupancy without passing every required inspection. GCC 14.04.050 voids and revokes a permit if work proceeds past a required inspection stage that was never scheduled or approved by the building inspector.
Grant County Building Inspection Requirements
Some RestrictionsGrant County Code § 14.04.050
5.[A]105.5.2 and R105.5.2 Permit reinstatement. A valid permit may be reinstated after expiration under the following circumstances:a.All inspections must have been completed and approved to date; ... 6.[A]105.5.3 and R105.5.3 Permit revocation. Projects that have proceeded beyond any required inspection(s) per Section R109 or [A]110 shall be deemed void and the permit revoked. No structure sha...
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