Meet the San Francisco Team Behind Sutton ADU San Francisco
The crew that shows up at your door in San Francisco is the same crew that answers your questions, walks your lot, and signs off on the final walkthrough. We hire people who’ve spent years in Bay Area construction, not call-center order takers. Every field technician is background-checked, identity-verified, and photo-badged through the Threshold Verified system. Before anyone arrives, you get their name and photo. You’ll know exactly who’s walking up your driveway. That’s how Miles Hartwell has run Sutton ADU San Francisco since 2006, and it’s how the team operates today, from the Richmond to the Excelsior.
Our People
Daniel R., Lead ADU Technician
Daniel has spent fourteen years in residential construction, the last eight focused almost entirely on accessory dwelling units and room additions across San Francisco. He’s the person who figures out how a prefab unit fits onto a narrow Outer Sunset lot or how to route plumbing through a hillside foundation in Noe Valley without wrecking the existing house. Daniel holds certifications for James Hardie cladding installation and has completed factory training through Abodu and Cover. He’s the first to tell a homeowner when soil conditions will add real cost, and the first to find a workaround that doesn’t. On weekends, he rebuilds vintage motorcycles in a garage in the Bayview, which means he understands tight spaces better than most.
Maria S., Senior Installer
Maria came to Sutton ADU San Francisco after six years with a general contractor working on Victorian retrofits in the Mission and Bernal Heights. She knows San Francisco’s older housing stock the way you only can if you’ve spent years inside it: sagging floor joists, unexpected framing gaps, plaster walls that hide surprises nobody planned for. She specializes in Tuff Shed conversions and modular unit assembly, and she’s been through Dvele and Plant Prefab installation training. Maria is the person who catches the small things, a misaligned corner, a rough edge, a flashing detail that looks fine but won’t hold up. She grew up in Daly City and can usually tell you what the fog will do to a project schedule in any given neighborhood.
Priya K., Service Coordinator
Priya is the voice you’ll hear when you call (831) 272-7212. She’s been with the company for five years and runs the calendar, the permit paperwork, and the not-small job of keeping every homeowner informed as their project moves through the city’s planning and building departments. San Francisco has its own pace for approvals, and Priya knows which questions to ask at DBI before they become delays. She tracks every inspection date, every material delivery, and every change to your written price so nothing drifts into surprise territory. Priya worked in property management before joining Sutton, so she’s fluent in what landlords, homeowners, and tenants each need to hear. She’s also the reason the coffee order is right on site-walk mornings.
Luis T., Apprentice Installer
Luis joined the crew two years ago after finishing a pre-apprenticeship program in the East Bay. He works under Daniel and Maria on framing, finish work, and site prep, and he’s honest about what he’s still learning, which is exactly what you want in someone on your property. He’s already passed background checks and identity verification as part of Threshold Verified standards, arrives in uniform with a photo badge, and his name and photo are sent to you before he steps on site, same as every other crew member. What Luis lacks in years he makes up for in discipline; managers have noted he labels every tool and never leaves a jobsite muddy. He’s currently studying for his contractor’s license and takes notes like someone who plans to lead a crew of his own one day.
One Standard, Every Job
The Threshold Standard applies to every person named above, no exceptions. That means a written price before any work begins, always, on every project. It means the 365-Day Done Right Promise covers defects in workmanship for one full calendar year from project completion. It means if a repair or element of the build fails in that window, the second visit is free, no haggling and no fee. It means every technician is background-checked, identity-verified, uniformed, and photo-badged, with name and photo delivered before arrival. The same crew standards apply whether we’re installing an Abodu unit in the Sunset, a Cover prefab in Glen Park, or a room addition off a Marina flat. Different people, different neighborhoods, one written standard. That’s the whole idea.
Why Homeowners in San Francisco Choose Sutton ADU San Francisco
San Francisco lots make ADU construction more complicated than most people expect. A setback, the required gap between your new structure and the property line, can be as little as four feet in some zones and far more restrictive on certain hillside parcels. Soil conditions change from block to block, especially in neighborhoods built on former dunes or filled marshland. The team at Sutton ADU San Francisco knows these conditions because we’ve been building here since 2006, not parachuting in from another market with a generic playbook.
Miles Hartwell started Sutton with a simple observation: homeowners in San Francisco need a builder who will tell them the truth about cost before the work starts. That’s why the Threshold Standard exists. It’s why the written price is non-negotiable. It’s why the crew shows up in marked uniforms with photo badges, and why their names and photos arrive on your phone before the truck pulls up. The name Sutton, an old English word for a south farm, suits the work. Adding a second home to your lot is exactly that kind of settled, rooted decision. You’re not gambling. You’re building.
We work with the ADU product lines that fit San Francisco’s specific constraints. Abodu and Cover units work well for flat, accessible lots. Dvele and Plant Prefab tackle custom builds on tighter parcels. Boxabl serves as an interesting option for certain sites. Tuff Shed conversions remain a budget-conscious route when the design makes sense. Our team has authorized training on all of them, plus James Hardie exterior cladding systems, so the guidance you get is based on experience, not a sales brochure. If a particular brand isn’t right for your lot, we’ll say so and explain why.
What It’s Like to Work With Our Team
You’ll make one call to a live person. Priya will schedule the site visit, confirm the time, and send you the names of the crew members coming out. Daniel or Maria will walk the lot with you, listen to what you want to build, and point out what the site will and won’t allow. You’ll get a written price, line by line, before you commit to anything. That price governs the project unless you ask for changes. If something isn’t right after completion, the 365-Day Done Right Promise kicks in and we return, free of charge. No fine print. No voicemail maze when you want answers. Just a standard written down and followed, by real people with names you know.
Reach the team at (831) 272-7212 to schedule your free site walk and get a written price on your ADU or room addition. Estimates are free, and the first conversation is just a conversation, no pressure and no gimmicks.
Written by Miles Hartwell, Owner at Sutton ADU San Francisco, serving San Francisco since 2006.
