Rules
Part of Planning a backyard studio around trades, panels and one mini-split
How to vet a specialist backyard studio builder in 2027: a practical read
Checks for design-build studio companies: portfolio verification, in-house versus subcontracted trades, what turnkey excludes, and public enforcement records.
What to take away
- Verify the portfolio. Ask which of those projects the company actually built rather than supplied.
- Find out which trades are in house and which are subcontracted. That decides your schedule.
- The word turnkey means whatever the exclusion list says it means. Read the exclusions.
- Public enforcement records are free to search and worth ten minutes of your time.
Verify the portfolio, not the photographs
Specialist studio companies market with finished interiors. Ask three questions about each project that impressed you: did you build this or supply it, who did the site work, and may I speak to the owner?
A supplier who delivered a shell to a site built by others is not the same as a company that ran the whole job. Both can be good. They are not interchangeable.
Ask for the documents that tie each project to the company: the permit number, the certificate of occupancy or the final inspection sign-off, and an owner reference list with phone numbers.
Permit portals are free to search, and the contractor name on the permit should match the company you are talking to.
In house versus subcontracted
If in house
- Framing or shell
- Predictable quality and schedule
- Electrical
- Faster coordination
- Heating and cooling
- Sized with the enclosure
- Site and foundation
- Rare, and valuable when true
If subcontracted
- Framing or shell
- Depends on who is available
- Electrical
- Ask who books the inspection
- Heating and cooling
- Often sized late, and generously
- Site and foundation
- The most common gap in a turnkey price
There is no correct answer, but there is a correct question: who do I call when this part goes wrong? A prefab purchase splits along the same lines, which is why those seams have to be named in writing before a deposit.
In house vs subcontracted trades
In house
- Framing or shell
- Predictable quality
- Electrical
- Faster coordination
- Heating and cooling
- Sized with enclosure
- Site and foundation
- Rare, valuable
Subcontracted
- Framing or shell
- Depends on availability
- Electrical
- Ask who books inspection
- Heating and cooling
- Often sized late
- Site and foundation
- Most common gap
Read what turnkey excludes
Turnkey packages routinely exclude site preparation, drainage, the electrical feeder from the house, permits, steps and paths, and yard restoration. None of that is unreasonable, and all of it is your money.
What turnkey usually excludes
- Site preparation
- Drainage
- Electrical feeder from house
- Permits
- Steps and paths
- Yard restoration
Ask for the exclusion list before the price, then compare exclusion lists across bidders. Most price gaps live there rather than in margin. Exclusions do most of the work in any quote, whoever is bidding.
Two exclusions carry most of the surprise cost. A buried electrical feeder sized for a 60 amp subpanel typically runs $2,000 to $6,000, set by trench length and soil.
Yard restoration and regrading typically runs $1,000 to $3,000. Permits run $500 to $2,500 by jurisdiction.
Check the public record
Enforcement and inspection information is public. OSHA publishes enforcement data covering inspections and citations, which is searchable and worth checking for any firm large enough to employ crews. A clean record proves little on its own; a pattern of serious citations tells you something real.
Check the state licensing board too, for license status, class and complaint history. And match the legal entity on the contract to the entity on the license, since trading names and registered names frequently differ.
California makes this concrete. The Contractors State License Board lookup at cslb.ca.gov shows license status, classification (B for general building, C-10 for electrical), the business name, and the personnel who qualify the license.
Compare that business name with the legal entity on your contract. A firm trading as Studio Yard Co. may be licensed as JRW Construction Inc., and the bond and warranty sit with the entity, not the trade name.
How a firm treats its own people
The way a company handles its crew usually predicts how it handles your project. Ask whether workers are employees or independent contractors, and whether they carry workers compensation.
The Wage and Hour Division's page on worker rights sets out the minimum wage, overtime and recordkeeping standards the Fair Labor Standards Act establishes. A firm that treats those casually tends to be casual about other paperwork as well.
Ask for insurance certificates directly from the insurer, naming your address and the working dates.
Before you sign
Settle the payment schedule against visible milestones, the change order process, the warranty and its start date, and who books every inspection. The checks in our guide to vetting a shed contractor apply here too, and the market conditions worth knowing explain why some answers have changed recently.
A common schedule pays a deposit under your state cap, then at foundation, rough-in and final inspection, holding 10 percent until the punch list closes.
