Tumwater building codes, right-of-way, and drainage manual
Tumwater Municipal Code chapter 15.04 adopts the 2021 International Building Code with Washington State amendments from Chapter 51-50 WAC, along with the 2021 International Existing Building Code. Chapter 15.06 adopts the 2021 International Residential Code with Chapter 51-51 WAC amendments. The exempt excerpts we read name sheds up to 200 square feet and fences up to 7 feet, and they do not settle wall, deck, or driveway status.
Stormwater standards are tied to TMC 17.16.010(D), which points to state rules, Public Works association guidelines, a regional Thurston drainage and erosion manual, and the city’s development standards manual. The city’s own Drainage Design and Erosion Control Manual, dated July 1, 2022, uses Ecology’s 2019 Stormwater Management Manual for Western Washington as its base.
A telecom franchise ordinance we read says a use permit is required for work its grantee performs in the right-of-way, and it refers to the city’s street obstruction and use permit ordinances. We send apron and frontage questions to the Transportation and Engineering Director in writing, the office that ordinance names for right-of-way submittals.
Nearby, we also build in Olympia, Lacey, Yelm, and DuPont, and we serve the rest of western Washington.