Residential Remodels and Additions

This checklist provides the list of individual documents that are required for a complete application for residential projects.

This form is required for all residential remodel projects along with specific site and project data.

Draw site plan to scale, not less than 1-inch=100-feet, show all property corners, existing and proposed structures, adjacent roads, all storage tank locations, all easements, utility locations, and north arrow. The site plan may incorporate the erosion, pollution, and stormwater control requirements of a site development permit. This combined plan is sometimes referred to as an abbreviated plan or stormwater site plan.

Projects that add 500 square feet or more of new impervious may require a site development permit to ensure that erosion, pollution, and stormwater runoff are controlled during and after construction.

Engineering calculations are required whenever a structure doesn't meet conventional light frame construction standards. Submit structural design drawings separately from architectural drawings. Both calculations and drawings must be stamped by a licensed professional engineer.

Energy efficiency and ventilation calculations may be required, based on the International Energy Conservation Code of Washington State (IECC-WA) and Washington State Energy Code (WSEC).

If lot size is less than one acre in size, the water purveyor must sign a certificate of water availability.

If lot size is one acre or more, or there is no fire flow available, submit a Fire Flow Credit Checklist to show how 100% credits will be achieved.

Water source approval includes drilling and testing of wells. Submit application to the Tacoma Pierce County Health Department for well construction. Well inspection may be required for a remodel project, Remodel Water Supply Inspection.

Submit application to the Tacoma Pierce County Health Department for well construction.

If on septic, contact the Tacoma Pierce County Health Department to determine level of review for a remodel project, whether a change in use of the property or an addition to a structure.

Submit application to Tacoma Pierce County Health Department for on-site sewage system. Contact Tacoma Pierce County Health Department to determine the level of review for a remodel project, whether a change in use of the property or an addition to a structure. Remodel Project Requirements - Residential.

Contact the Tacoma Pierce County Health Department to determine the level of review for a remodel or addition when a well is used to supply drinking water.

Sewer work on residential property; single-family, duplexes, and accessory dwelling units, requires review by the County Public Works Department sewer division.

Draw plans to scale, the preferred scale is ¼-inch = 1-foot, and include dimensions. A complete set of drawings includes a foundation plan, framing plans, floor plans, cross sections, and elevations.