A JBS Company

Your Backyard. Transformed.

Custom prefab studios designed, built, delivered, and installed, all in-house.
No permit required. Delivered in weeks, not months.

💰Financing Available—Check Your Rate →

5.0 Google Rating20+ Years in Western WAWA Lic. JOHNSBS813CGRVIA & PMRVIA Certified

The Collection

Four Signature Styles.
Infinite Possibilities.

Every Coast Studio starts with one of our four architecturally designed models, then we customize it to your lot, your style, and your vision. All under 200 sq ft. No permit needed.

Modern Coastal

The Coast

Clean lines, large glass panels, and a contemporary shed roof. The flagship model — designed for maximum light and Pacific Northwest style.

Up to 200 sq ft

Home Office · Studio · Guest Retreat

Classic Craftsman

The Saltbox

A timeless saltbox roofline with craftsman detailing. Blends seamlessly with traditional Pacific Northwest homes.

Up to 200 sq ft

Art Studio · Workshop · Guest Suite

Architectural Edge

The Modern

Flat roof, bold geometry, and premium finishes. For the homeowner who wants their backyard structure to make a statement.

Up to 200 sq ft

Music Studio · Yoga Studio · Office

Warm & Welcoming

The Craftsman

Gable roof, board-and-batten siding, and warm wood accents. The most versatile model in the Coast Studios lineup.

Up to 200 sq ft

She Shed · Man Cave · Hobby Room

Who It's For

Your Backyard. Your Purpose.

Every Coast Studio is built to order — designed around how you'll actually use the space.

The Coast

Home Office

Work from your backyard — not your kitchen table.

Separate your work life from your home life. A dedicated studio gives you the focus, quiet, and professional space you need — steps from your back door.

Design Yours

The Saltbox

Creative Studio

Your art deserves its own space.

Paint, sculpt, photograph, or design without worrying about the mess. Natural light, vaulted ceilings, and wide doors make every model a perfect creative retreat.

Design Yours

The Modern

Music Studio

Record, practice, and create — without the neighbors.

Insulated walls, a solid structure, and a space that's entirely yours. The Modern's clean geometry and minimal windows make it a natural fit for acoustic treatment.

Design Yours

The Craftsman

She Shed

A room of your own — finally.

A private sanctuary for reading, crafting, yoga, or simply being. Customize every detail — siding color, interior finish, lighting — to make it unmistakably yours.

Design Yours

The Modern

Man Cave

Your space. Your rules.

Game room, workshop, sports den, or all three. Built tough, finished right, and designed to handle whatever you put in it — from a workbench to a 65" screen.

Design Yours

The Craftsman

Guest Retreat

Give your guests a real place to stay.

Under 200 sq ft and non-habitable means no permit in most jurisdictions — but fully insulated, finished, and comfortable means your guests won't want to leave.

Design Yours

Coast Studio — Interior Reveal

Grey Siding · Wood Ceiling · Mini-Split

20+

Years Building
Western WA

Why JBS

We Don't Just Build.
We Engineer Your Vision.

🏗️

In-House Everything

From AutoCAD design to fabrication to final installation — we control every step. No subcontractors. No handoffs. Just one team, accountable to you.

✅

No Permit Required

Under 200 sq ft, non-habitable structures don't require permits in most Western Washington jurisdictions. We know the rules — and we handle the details.

⚡

4–7 Week Timeline

Prefab speed without the prefab compromise. Delivered fully assembled or panelized for tight-access lots. Most projects complete in 4–7 weeks.

12-month warranty

In-house AutoCAD

Financing available

One-on-one design sessions

20+

Years in Business

5.0★

Google Rating

100%

In-House Built

RVIA

& PMRVIA Certified

Also By JBS

Thinking Bigger?
Tiny Homes & ADUs Too.

When a backyard studio isn't enough, JBS offers a full lineup of custom tiny homes and ADUs (Accessory Dwelling Units) — from 400 to 1,500+ sq ft. Fully permitted, fully custom, and built with the same in-house precision as every Coast Studio.

11 models from 400–1,500+ sq ft

Fully permitted builds

In-house AutoCAD & 3D modeling

Financing available

Shaughnessy Project — Sedro-Woolley, WA

1,473 sq ft · 2 Bed · 1.5 Bath

What Our Clients Say

Real Reviews from Real Homeowners

Don't take our word for it — see what Western Washington homeowners say about working with JBS.

Jennifer Mahler

2 days ago

Great team to work with, professional, experienced and respectful. Erik is thoughtful in his approach to design and building of projects. We have worked on both residential and commercial projects together.

Tamatha Brown

2 days ago

I went to visit Erik and his crew first at their office and then he came on site. I was working through the need to help my mom find an ADU that would fit her needs in retirement, be affordable and work on our double city lot. Erik took the million ideas I had and put them into an incredible home design that fit all her needs as well as being very reasonably priced. I would highly recommend him and his crew. He was very insightful and thorough.

Brion Narimatsu

4 months ago

Great group of people to work with from design through construction.

Felipe Garcia

8 months ago

I had the great experience with my tiny home, made by Johnston Building.

reid goforth

9 months ago

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.

Brion

1 year ago

Johnston Building Service was/is great to deal with. Service and design work was outstanding, timely and they do listen to your input. I would use their services on another project.

Anthony Johansen

6 years ago

Just made a delivery from Phoenix 👍

View all reviews on Google

Ready to Claim Your Space?

Start designing your custom backyard studio today. Every inquiry is reviewed personally and we respond within 1 business day.

Your Backyard. Transformed.

Four Signature Styles.Infinite Possibilities.

The Coast

The Saltbox

The Modern

The Craftsman

Your Backyard. Your Purpose.

Home Office

Creative Studio

Music Studio

She Shed

Man Cave

Guest Retreat

We Don't Just Build.We Engineer Your Vision.

In-House Everything

No Permit Required

4–7 Week Timeline

Thinking Bigger?Tiny Homes & ADUs Too.

Real Reviews from Real Homeowners

Ready to Claim Your Space?

Four Signature Styles.
Infinite Possibilities.

We Don't Just Build.
We Engineer Your Vision.

Thinking Bigger?
Tiny Homes & ADUs Too.