From the first dig to the final landscape trim, every phase of your ADU or DADU is handled by the same team — no subcontractor handoffs, no hidden fees, no schedule slipping between trades.
Most ADU builds collapse in the handoffs — the excavator who leaves before the plumber arrives, the framer who doesn't read the foundation drawings. DIGS does all thirteen disciplines in-house under one Washington license (DIGSES*775LE), so the work flows together instead of fighting for the schedule.
01Experts in constructing Attached and Detached Accessory Dwelling Units for versatile living spaces.
Custom-designed accessory dwelling units — attached or detached — fully permitted and built end-to-end. Whether you need a rental, a guest house, multi-generational living, or a backyard office, DIGS handles design, permits, foundation, framing, finishes and the final walk-through.
02Land preparation for construction, including grading, excavation, and utility installation.
From raw lot to build-ready: clearing, grading, drainage, erosion control, and utility coordination. We turn challenging Pacific Northwest sites into properly prepared platforms for the work ahead.
03Digging and removing earth or rocks to prepare the construction site.
Heavy equipment and precision digs. Footings, basements, utility trenches, retaining walls. We operate our own equipment so the schedule never depends on a sub-contractor's calendar.
04Initial preparation of land, including excavation and foundational activities.
Foundation prep, drainage, gravel, compaction. The work nobody sees but everything depends on — done right the first time so the rest of the build can rely on it.
05Building strong foundations with high-quality concrete for durable construction projects.
Footings, stem walls, slabs and full foundations engineered to handle Pacific Northwest soil and seismic codes. ZIP-sheathed transitions, properly damp-proofed, square and level.
06Construction activities related to infrastructure, such as roads, bridges, and utilities.
Curb cuts, driveways, frontage improvements and code-compliant civil engineering. We coordinate with the city so your project never stalls on a right-of-way permit.
07Coordinating power, water, gas and data hookups for new builds and renovations.
We handle the trench, the conduit and the meter — coordinated with PSE, the water purveyor and any private utilities so your build comes online without delay.
08Thorough examination of sewer lines to assess their condition and functionality.
Camera inspections, locates, repairs and full sewer line replacements. Side sewer connections for new DADUs and curb-to-house repairs for existing homes.
09Developing vacant or underutilized land within existing urban areas.
Make the most of your lot. Whether it's a tight Seattle in-fill or a Snohomish County back lot, we specialize in turning underused land into permitted, profitable living space.
10Tearing down structures to clear the site for new development.
Controlled demo of existing structures, asbestos abatement coordination, debris removal and a clean hand-off to the new build. Safe, permitted, and on schedule.
11Creating and building outdoor spaces with features like gardens and hardscapes.
Hardscape, retaining walls, walkways, drainage and final-grade landscape. We finish the property — not just the building — so handover day looks like the renderings.
12Sidewalks, curbs, gutters and street-side compliance for permit conditions.
Sidewalk repairs, ADA ramps, curb cuts, gutter work — whatever the city plans review requires. We handle the inspection coordination so you don't have to.
13New service lines, replacements and emergency leak repairs.
Domestic and irrigation waterline installation, leak repair, meter coordination and trenchless repair where possible. Pressure-tested, code-compliant, inspected.
“From the beginning I felt professionalism and trust — DIGS navigated the permit process seamlessly.”
Phone or on-site consultation. Owner-led from first call to final inspection. Call DIGS directly or send a note — we'll be in touch.
