Dry Columbia Basin sagebrush steppe with basalt cliffs above a wide river and green irrigated vineyard rows at its edge.
Walla Walla County, Washington Tri-Cities & Walla Walla

Barndominium Builders in Walla Walla, Washington

A barndominium project in Walla Walla usually starts with one question: is the parcel inside the city, inside the urban growth area waiting to be annexed, or out in the county? Inside the limits, the City's Development Services department permits and inspects the house, City sewer serves the lot, and drinking water comes mostly from the protected Mill Creek Watershed. Just outside, Walla Walla County handles permits and zoning, including the agricultural and rural residential zones where acreage is found. The City also publishes its own design loads, and they are heavier than the values Kennewick and Richland publish: a 30 psf snow load and Seismic Design Category D. We plan for those from the first sketch. We build the whole project, from a custom plan and site preparation through the permit set and a turnkey build, or supply barndominium kits and pole barn homes to owners who plan to assemble the shell with their own crew. Send us the parcel through the survey and we will check the jurisdiction, the zone and the utility hookups before anything is priced.

Walla Walla at a glance

Principal county
Walla Walla County
Building permit
City building department
Land use
City zoning, inside an urban growth area
Wastewater
Public sewer
Water
Public water system

Barndominium Kits and Pole Barn Homes in Walla Walla

A kit suits an owner who wants to raise the shell with their own crew. A pole barn home sets its frame on posts and trusses (the engineering term is post-frame construction) and suits a wide, simple layout with a shop bay under the same roof; a metal building home uses a bolted steel frame. Which one fits your parcel comes down to the zoning, the site and the design values the local building office publishes, covered below.

Building a Barndominium in Walla Walla: Permits, Zoning, Septic and Water

On rural land the zoning, septic and water answers often come before the building answer. Here is who decides each part in Walla Walla, taken from the office or document that publishes it. Rules change, so check them again against your parcel before anything is drawn.

Who issues the building permit City building department

City of Walla Walla Development Services

Development Services handles permitting and inspections for all development activity within the City of Walla Walla, including new construction, remodels, mechanical and plumbing permits. The City builds to the 2021 international codes adopted by the state and lists its own technical design values on the same page. Unincorporated parcels are permitted by Walla Walla County until they are annexed.

Source: Building Permitting, City of Walla Walla (wallawallawa.gov)

Who decides the land use Inside an urban growth area

City of Walla Walla Development Services (Planning)

A property can be annexed into Walla Walla only if it lies within the City's urban growth area and touches the city limits, and the City takes annexation petitions twice a year, in January and July. City development standards already apply to subdivisions and short plats in the unincorporated part of the urban growth area that receive City utility service; after annexation, zoning and permits move to Development Services.

Source: Annexations, City of Walla Walla (wallawallawa.gov)

Sewer or septic Public sewer

City of Walla Walla Wastewater; Walla Walla County Department of Community Health for septic

The City's wastewater plant, operated under contract, treats sewage from the City collection system and, under a 1927 court decree, discharges treated water to Mill Creek from December 1 to May 1 each year. New sewer connections are requested through Development Services. The City refers septic tank questions to the County's health department.

Source: Wastewater, City of Walla Walla (wallawallawa.gov)

Where the water comes from Public water system

City of Walla Walla Water Division

The protected 36-square-mile Mill Creek Watershed supplies 88 to 90 percent of the City's water, piped 14.5 miles to the treatment plant for UV disinfection and chlorine. Seven deep basalt wells, 800 to 1,400 feet down, cover summer low flows and emergencies. A parcel outside the City system needs its own well and proof of an adequate water supply for the permit.

Source: Water, City of Walla Walla (wallawallawa.gov)

Walla Walla design values
The City of Walla Walla's building permitting page lists a 30 lb per square foot ground and minimum roof snow load, a 110 mph wind speed, Seismic Design Category D and a 24-inch frost depth, and states that ice shield underlayment is required.

Source: Building Permitting, City of Walla Walla (wallawallawa.gov)

Septic oversight in the county
Outside the City sewer, the Walla Walla County Department of Community Health has regulatory oversight of domestic on-site sewage systems in the county, reviewing permit applications for new, repaired or expanded systems and certifying installers and pumpers.

Source: On-Site Sewage Land Use, Walla Walla County Department of Community Health (dch.wwcowa.gov)

Building on land near Walla Walla

Most of Walla Walla is established neighborhoods, so larger parcels for a shop bay or a pole barn tend to sit on the edges, often in the unincorporated urban growth area. Confirm three things before you buy: whether the lot is in the city or the county today, whether City water and sewer reach it, and what the zone allows. Frame roofs to the City's 30 psf snow load and seismic category, which are heavier than many buyers expect. If the parcel is outside the urban growth area, the county's agricultural and rural residential zones and a private well take over, as our Walla Walla County page explains.

Other places in this part of Washington

Have land in or near Walla Walla? Tell us about the parcel and what you want on it, and we will check it against the local rules before anything is drawn.

Building in Walla Walla: questions

Start the survey
How much does it cost to build a barndominium in Walla Walla?
The City's heavier snow and seismic design values mean more structure than a comparable build downriver, and a parcel at the edge of town may need a longer utility run or annexation work before a permit. Kit versus turnkey and the size of the shop bay matter most. We price against the parcel you have. The ranges and cost drivers we rely on are set out, with sources, in our barndominium cost guide.
Do I need a building permit for a barndominium in Walla Walla?
Yes. Inside the city, Development Services permits and inspects all new construction, and a barndominium lived in as a home is reviewed like any other house. Unincorporated land, including parts of the urban growth area not yet annexed, is permitted by Walla Walla County instead. Send the parcel through the survey and we will confirm which office applies.
Can I build on a lot just outside Walla Walla city limits?
Usually, but the county rules apply until the land is annexed, and annexation is only possible inside the urban growth area and next to the city limits. If the lot will use City water or sewer, City development standards may already apply to it. Beyond the growth area, look at county zoning, a private well and a septic permit from the county health department.

Other places near Walla Walla

Nearby places with their own pages. Across a city limit or a county line the permit office, the zoning, the septic program and the water rules can change, so each is covered separately.

Building in Walla Walla?

Start with the survey. Tell us where the land is and what you want on it, and we will come back with which offices decide it, what the zoning allows, and a plan to fit.