Available To:
This exemption is available to homeowners who plan to make major physical improvements to a single family home they own. The exemption applies only to qualifying single family dwellings and must be requested before the improvements are completed.
Program Benefits:
Qualifying home improvements may receive a partial property tax exemption for three assessment years. The exemption reduces the assessed value of the home by the amount of the approved improvement, up to 30% of the home’s value before the improvements. The exemption applies to the dwelling itself and continues for the full three-year period even if the home is sold.
Qualifying Improvements:
A physical improvement is a permanent change that adds value to a single family home. This includes additions, remodels, renovations, structural upgrades, and attached features such as garages, carports, or patios. Repairs and deferred maintenance do not qualify. Improvements such as swimming pools, fences, landscaping, sheds, barns, shops, or other outbuildings are also not eligible. The cost of the improvement is not used to calculate the exemption amount.
Eligible Homes:
A single family dwelling is a residential structure designed for occupancy by one family. Manufactured homes, mobile homes, and park model trailers may qualify if they are permanently installed on land owned or leased by the homeowner, set on a foundation, and connected to utilities such as water and sewer.
Application & Filing Requirements:
To receive this exemption, homeowners must:
- File an application with the Assessor before the improvements are completed
- Use the official exemption application form
- Submit a written Notice of Completion after the work is finished
- Ensure the exemption is not claimed more than once in a five-year period on the same dwelling
How the Exemption Is Calculated:
The exemption amount is based on the difference in the home’s value before and after the improvement, but it may not exceed 30% of the home’s value prior to the improvement. The approved exemption amount is deducted from the assessed value of the home for the three assessment years following completion of the improvement.
Assessor Review Process:
After receiving an application, the Assessor determines the true and fair value of the home before improvements, either through inspection or appraisal methods. Once the Notice of Completion is received, the Assessor conducts a physical inspection of the improved dwelling to determine the value added by the improvement and calculate the exemption. If the dwelling no longer meets the definition of a single family home, the exemption may be denied or canceled.
Relationship to Revaluation:
Grays Harbor County revalues property on a four-year revaluation cycle. A home receiving a home improvement exemption may still be revalued during the three-year exemption period; however, the approved exemption amount remains unchanged for the duration of the exemption.
Appeals:
A homeowner may appeal to the County Board of Equalization if the exemption application is denied, if the exemption is removed before the end of the three-year period, or if the homeowner disagrees with the amount of the exemption granted.
Laws & Rules:
RCW 84.36.400
RCW 84.36.410
WAC 458-16-080