Brion Narimatsu
Great group of people to work with from design through construction.
FeaturedVerifiedHome Builders in Mount Vernon, Washington
Coast Studios, Johnston Building Services
Coast Studios is the backyard-studio sub-brand of Johnston Building Services (JBS), based in Sedro-Woolley and serving Western Washington. JBS builds projects from backyard studios to full custom homes. Its prefab construction process has been refined since 2002.
Business Highlights
- JBS handles design, fabrication, delivery and installation in-house without subcontractors.
- JBS lists Washington contractor license JOHNSBS813CG.
- JBS says it is licensed and insured.
- JBS identifies itself as an RVIA- and PMRVIA-certified builder.
- JBS backs every structure with a 12-month workmanship warranty.
Service Area
Western Washington.
Featured on ProsGrade. Coast Studios, Johnston Building Services is one of 7 home builders ProsGrade lists in Mount Vernon, Washington.
Listing details
9 services listed, including Backyard studios, Tiny homes and ADUs and Small homes. Open weekdays, closed on weekends. Rated 4.9 from 11 reviews.
- Verified listing details
- Service information
- Customer review signals
- Photo gallery
- Public contact information
- Published local profile
How This Business Compares
How Coast Studios, Johnston Building Services compares with the other 6 home builders on ProsGrade in Mount Vernon, using public Google ratings and review counts.
- Ranks in the top half of the 7 Mount Vernon home builders on ProsGrade by Google rating and review volume.
- Rated 4.9 on Google, well above the 4.6 average of other Mount Vernon home builders on ProsGrade.
- One of 3 Mount Vernon home builders on ProsGrade rated 4.7 or higher from at least 10 reviews.
Services Covered
9 services- Backyard studiosFour customizable models; panelized construction.
- Tiny homes and ADUsSeven models; foundation or trailer options.
- Small homesFour models: Shaughnessy, Tern Island, Conejo and Ithaca.
- Custom homesCustom houses and specialty residential structures.
- Home additions
- Garages and outbuildingsPrefab garages, garden sheds, carports, play sheds and loafing sheds.
- Decks and site work
- Design and engineering2D and 3D CAD, permit drawings, engineering documents and home plans.
- Delivery and installationFully assembled or flat-stacked panel delivery; on-site assembly in 1–2 days.
Reviews
What customers say
Reviewers describe positive experiences with design and construction. One customer particularly praised timely service and the team's willingness to listen to project input.
Customer Reviews
Felipe Garcia
I had the great experience with my tiny home, made by Johnston Building.
reid goforth
Man all of the people at JCS are so wonderful, Erik has been on top of all of the projects I've been a part of with him. PHENOMENALLY helpful with different products options designs carries a gift without a doubt.
10 out of 10 every damn day of the week I recommend this place.
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Frequently Asked Questions
Do Coast Studios require a permit?
The company says its studios are under 200 sq ft and do not require permits in most Western Washington jurisdictions.
How long does Coast Studio delivery and installation take?
Coast Studios lists a delivery-and-installation timeline of 4–7 weeks.
Does JBS review the project site before construction?
JBS reviews project goals, lot access, delivery needs, timeline and local requirements that may affect scope or permits.
Does JBS offer financing?
JBS works with Hearth to help homeowners compare personalized options from lending partners; Hearth is a broker, not a lender. Financing is optional.