Frequently Asked Questions

Clear answers about backyard offices, studios, ADUs and DADUs:
how to get started, permits, timelines, payments and how we build.

How Do I Get Started?

Start with a quick call or the contact form. We look at your property (available space, access, slope and utilities), your goals and your budget, then send a detailed proposal with layout, finishes and a line-item quote. Once you approve the scope and pay the deposit, your build slot is reserved. We handle drawings, permits and a final schedule before construction begins.
Most backyard offices are built in about 3–5 weeks. If your city requires a building permit, add the time for the permit review.
It depends on your city. Many Greater Seattle cities exempt one-story detached backyard buildings up to 200 sqft from a building permit; Seattle is stricter. Electrical work always needs an electrical permit and inspection. We confirm local rules, prepare plans, submit the application, and coordinate corrections so reviews move quickly.
We use stage-based invoicing: deposit to start design/permits, a payment at material ordering, progress draws during construction, and a final payment at walkthrough. All terms are listed in your contract—no surprise fees.
Walls are 2×4 or 2×6 wood framing, depending on the model and energy-code requirements. We insulate 2×4 walls with R-13 and 2×6 walls with R-19 fiberglass, with proper air sealing, housewrap, and venting for year-round comfort in the PNW.
Yes. Window count, size, and placement are customizable. We’ll balance daylight and privacy while meeting structural, egress, and energy rules. Upgraded glazing options (tinted, laminated, low-E) are available.
Absolutely. Pick from our curated selections or request specific brands/finishes. We’ll confirm compatibility, lead times, and any price differences before ordering.
We design a dedicated circuit plan, then trench and run conduit from your main panel to a subpanel in the office. Outlets, lighting, exterior GFCI, and required AFCI/GFCI protection are installed per code. We’ll also quote panel upgrades if needed.
Most clients choose a high-efficiency mini-split heat pump for quiet heating/cooling. Alternatives include wall heaters or electric radiant floor heat. We size the system to the envelope so it stays comfortable and efficient all year.
Yes. We can build attached or detached depending on your site and goals. Attached additions follow different setback and structural rules; detached offices must meet DADU/shed standards. We’ll advise on the best path after a quick site review.
A Detached Accessory Dwelling Unit is a small, self-contained home on the same lot as a primary residence—typically including a bathroom, kitchen, sleeping, and living space. DADUs require full permits and must meet local zoning, life-safety, and utility standards. We handle design, engineering, and permitting end-to-end.

Your questions, answered—everything you need to know about SDEK.

From permits to pricing, here are the essentials to help you plan with confidence. If you don’t see your question here, reach out—we’re happy to help.

Still have a question?

Send us your question about your property or project, and we’ll get back to you.

Ask a QuestionCall +1 (206) 890-0641

More answers by topic

Ready to plan your backyard building?

Get a line-item quote for your property, from a backyard office to a full DADU.

Get a QuoteExplore Backyard Offices