Custom Home Builder in Spokane Valley, Washington

The older blocks of the Valley were platted when a house lot doubled as a garden: a small post-war rambler near the street, a detached garage, and a long run of lawn out back. So a lot of new-home work in Spokane Valley starts with a house that's too small or too tired to fix, sitting on a lot the owner has no intention of leaving. The other kind of call comes from the south edge, where the ground climbs toward the Dishman Hills and the Ponderosa area and a lot comes with rock, slope, and a view.

Domex Construction builds for both. Start from a wish list and we run it as design-build, with a drafter or architect and an engineer brought in as the project needs them. Bring drawings from your own designer and we bid and build that set as drawn. We've been in business nine years, our crews carry 32 years of combined experience, and we're licensed in Washington as DAVYDCI833NC and fully insured.

Keep the Lot, Replace the House

A knockdown makes sense when the problems are in the bones: a crawlspace with inches of clearance, low ceilings you can't raise without a new roof, a foundation settled out of level. Once a remodel on a 1950s ranch reaches that deep, you're paying for demolition anyway and keeping an old footprint. Starting over lets the new house use the whole lot: set farther back, a garage turned to the side, a better yard.

Washington requires an asbestos survey before a structure comes down, and post-war houses are where it turns up: textured ceilings, old sheet flooring, duct wrap, some cement siding. If the survey finds it, abatement comes before the excavator. Then the disconnects, and the sewer. Most of the Valley is on public sewer now, the result of years of county work to get septic tanks off the aquifer, but an older lot can still hide a tank that has to be decommissioned before the new house ties in.

Runoff from the new roof and driveway generally has to be handled on your own lot, typically with a grassed swale or a drywell. That has to fit on the site plan next to the house and any future ADU, so we lay it out early.

Detached ADUs on Deep Valley Lots

Those long backyards also have room for a second, smaller house. Washington's 2023 law requires cities in urban growth areas to allow accessory dwelling units, and the city writes its own rules on size, height, setbacks, and parking. Before anyone draws a floor plan, we confirm what's allowed on your parcel and how the unit connects: shared or separate sewer and water service, and whether the electrical service can carry a second kitchen.

A detached ADU has nearly as many corners, openings, and roof-to-wall joints as a full house, packed into a few hundred square feet, so flashing and cladding matter more per foot, and that's the trade we came up in. If the main house was re-sided recently, our siding crew can match the profile and color.

One sequence works well on the bigger lots: build the ADU first, move into it, then knock down and rebuild the main house fifty feet away. It takes planning around setbacks and utilities, and it can save a long stretch of rent.

South Side Slopes, Rock, and the Wildland Edge

The Ponderosa area and the hillsides along the Dishman Hills are a different build. Rock sits close to the surface and pines grow right up to the lots. Digging into rock changes foundation cost and schedule, and a slope that looks gentle from the street can still call for engineered retaining walls, a stepped foundation, or a walkout. The driveway has to work for a concrete truck in August and your car in January, and runoff from the hill has to be steered around the house and away from the neighbor downhill.

The view usually faces north, and the winter sun comes from the other side. Big north glass under Washington's energy code means better-performing windows and sun-side openings placed to do real work. With timber this close, we favor noncombustible James Hardie fiber cement, ember-resistant vents, and a cleared zone around the house.

Featured Nearby Project

[PROJECT PLACEHOLDER: replace with a real completed Domex project near Spokane Valley: photos, plans/spec, neighborhood, year. Do not publish this page without one.]

From Old Rambler to New House: The Valley Sequence

1. Lot and house assessment. A straight answer on remodel versus knockdown, and where an ADU could fit.
2. Surveys and utility check. Asbestos survey on any structure coming down, sewer and water service confirmed, stormwater approach sketched, rock and slope checked on south-side lots.
3. Drawings sized to the lot. We design the house (and ADU, if there is one) with you, or check your architect's set against the site, with engineering for slopes and retaining walls where needed.
4. City of Spokane Valley permits. Demolition and building permits filed with the city, which has run its own permitting since it incorporated in 2003.
5. Demo, foundation, and build. Abatement and demolition, then excavation, foundation, framing, envelope, and finishes, with every city inspection on the schedule.

Spokane Valley Build Questions

Licensed in Washington, Building Across the Valley

Domex Construction holds Washington contractor license DAVYDCI833NC, which you can verify through the state Department of Labor & Industries contractor lookup, and carries full insurance. Ask about our workmanship warranty when we meet. Our crews also build in Greenacres, Millwood, Liberty Lake, Otis Orchards, and Spokane.

If you've got an old house on a lot you love, or a sloped parcel on the south side, call us to set up a free consultation, and bring the questions you have about the lot.

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