Camas lots are the interesting part. Grade, rock and trees decide where a detached unit can land and what the foundation costs — and on a daylight-basement lot they can make the cheapest legal unit on your property the one that is half built already. Serden Group walks the site, checks the parcel against current City of Camas code, prices the utility runs, and builds the unit through to a certificate of occupancy. One licensed team, one project manager.
On Prune Hill, above Lacamas Lake and around the edges of Grass Valley, the constraint is rarely the zoning — it is the topography. Stepped footings, retaining, rock excavation and a build site a concrete truck cannot reach are what actually move a Camas ADU budget. So does the tree ordinance, which can rule out the corner of the yard you had in mind. The same grade that complicates a detached build often makes a daylight-basement ADU the best value on the property, because half the shell and most of the foundation already exist. We tell you which case you are in before you pay for design.
Detached units, attached units, above-garage builds, and garage and daylight-basement conversions for Camas properties. Feasibility, engineered plans, City of Camas permits, site work, utilities and finishes under one contract.
A standalone unit in the back or side yard on its own foundation — kitchen, full bath, bedroom, and its own entry and address.
Built off the existing house on a new footing line, with a separate exterior door and a code-compliant separation wall.
Converting space you already own — insulation, egress, ceiling height, a new kitchen and bath, and a legal second address.
A second story over an attached or detached garage, with the foundation and shear capacity verified before design starts.
We walk the grade, check your zone’s setbacks, lot coverage and height limits, and flag critical areas, steep slope and tree requirements that apply to your parcel. On sloped lots we bring the structural engineer in at this stage so the foundation strategy is priced before you fall in love with a plan the site cannot carry.
Floor plans, elevations and stamped structural drawings, then submittal and plan-review management with the City of Camas — or the Clark County Permit Center if your address is unincorporated. Geotechnical input, drainage detail and any critical-area review are handled as part of the package, not billed to you as surprises.
Excavation and footings, framing, roof tie-in, mechanicals, then finishes — with your kitchen and bathrooms kept in service and site access planned so equipment does not tear up the yard it has to cross. One project manager and a punch-list walkthrough before final inspection.
Camas, WA homeowners choose Serden Group for expert guidance and a stress-free home addition — from design to final walkthrough.
Great experience working with this company. They were professional, responsive, and the quality of their work was solid. They even took the time to treat me to lunch and go over the project details, which I appreciated. Would recommend.
The SERDEN Group did a complete remodel of our two upstairs bathrooms. Every step of the way Dennis, and his team, were communicative, kind, timely, and productive. They worked diligently, caring about the impact of having workers in your home. Everyone was friendly and attended to our creative ideas for the bathrooms. In the end we have two amazing new bathrooms. Our family is grateful for SERDEN and are wonderfully reminded daily of their excellent work. Thank you!
I recently hired Serden Group for a full kitchen and bathroom remodel, and I couldn't be happier with the results! From start to finish, the team was professional, reliable, and detail-oriented. The quality of their work is outstanding — everything from the tile installation to the cabinetry and finishes looks beautiful and well-crafted. They completed the project on time and within budget, which is rare to find these days. I highly recommend Serden Group to anyone looking for top-quality remodeling work. They truly exceeded my expectations!
I had a very pleasant experience with SERDEN GROUP company. They remodeled my bathroom, and I am completely satisfied with the result. Fast and high-quality work. Denis answered all of my questions, suggested great solutions for the renovation, and delivered everything he promised. I 100% recommend them.
Had the pleasure to work with this team on a project for one of their clients. They followed through with every request from start to finish and we can proudly say that, they really put their best foot forward with all their work. Our team would love to continue to work together for future jobs!
Camas permits its own work and its lots have a distinct signature. Four local facts shape almost every ADU we build here.
Camas runs its own building, plumbing, mechanical and electrical permit process through the city, separate from Clark County — separate review, fees and inspection queue. Washington's 2023 ADU law requires up to two units per residential lot inside urban growth areas, units of at least 1,000 sq ft, and no owner-occupancy requirement; Camas sets height, setback and design standards within that framework.
Prune Hill, the slopes above Lacamas Lake and the edges of Grass Valley frequently need stepped footings, retaining walls or a daylight-basement approach, and rock is common enough that we plan for it. Access matters as much as grade: if an excavator and a concrete truck cannot reach the build site, the foundation number changes materially.
Camas has tree retention requirements and critical-areas regulations for slopes, wetlands and streams that can restrict where a detached unit is allowed to land, and can add a review step or a geotechnical report at the front of the permit schedule. We identify that in feasibility instead of absorbing it mid-permit.
On a sloped Camas lot, a walk-out basement already has the foundation, the floor and part of the envelope. Converting it to a legal ADU comes down to ceiling height, an egress window with a proper well, moisture management, fire separation and a grade-level entry — typically the lowest cost per square foot of any unit on the property.
Camas ADU standards, permit requirements, fees, tree rules and critical-areas regulations change. Verify current requirements with the City of Camas for your parcel — we handle feasibility, submittal and inspections either way.
From Prune Hill and Lacamas Shores to Grass Valley, Camas Meadows, Fern Prairie and downtown — Serden Group builds additions across Camas and east Clark County. We know which parcels sit inside city limits, where slope and critical-area review will apply, and what the review actually takes.
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Camas units run at the upper end of the Clark County range — sloped sites, rock, tree retention and higher finish expectations. Ranges include design, engineering, permits, site work, utilities and finishes. System development charges and Washington sales tax are quoted separately.
A long utility run to the back of the lot, a sewer lateral that has to be replaced or a new tap cut in, an electrical service upgrade, sloped or rock-heavy sites, stormwater detention triggered by the added impervious area, and system development charges that vary by jurisdiction.
Using space you already own and already have a roof over — a garage or basement conversion avoids the foundation, the roof and most of the site work. Keeping the unit under the size threshold that triggers additional review, and stacking the ADU near the existing utility stub-outs.
Impact and system development fees, a separate water meter, the driveway or path the code requires to the entry, landscaping restoration after the trench work, and appliances. We list all of it in the written scope so the finance conversation happens once.
Keep Exploring
The services that pair most often with an ADU, plus the planning guides our Camas clients read first.
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