ADU Specials in San Francisco, CA
If you’re pricing an ADU, a home addition, or a room addition in San Francisco, call Benson ADU San Francisco at (424) 328-5746 before you commit to anything. We run a handful of standing offers throughout the year, and they’re built around the same thing our written estimates are built around: you should know exactly what you’re paying before a single panel shows up. No bait pricing. No “call for details” runaround. Just the number, on paper, before work starts.
Current Offers
Free Written Estimate & Project Scope
Every project with Benson ADU San Francisco starts with a written price before any work begins. That’s not a promotion so much as how we operate: you’ll get a line-item scope, real numbers for the build, and zero surprises at the door. Homeowners in neighborhoods like the Sunset, Richmond, and Bernal Heights tell us this is the single most useful thing we do.
Valid through March 31, 2027. Mention this offer when you call (424) 328-5746.
First-Time Customer Prefab Consultation
If you’re new to Benson ADU San Francisco and still deciding between a site-built ADU and a prefab panel system, we’ll walk you through the real differences at no charge. You’ll learn how Abodu, Cover, Dvele, Mighty Buildings, Boxabl, Plant Prefab, and Tuff Shed actually compare on cost, lead time, and what works under San Francisco setback rules. No obligation, just straight answers from Troy.
Valid through March 31, 2027. Mention this offer when you call (424) 328-5746.
365-Day Done Right Promise on Every Build
This is our standing offer on every ADU, addition, and room addition: if the work isn’t right within a full year, Benson makes it right. In writing, stamped on your project documents. It covers workmanship and the materials we install, and it’s the same guarantee whether you build with James Hardie cladding, a prefab system, or traditional stick framing.
Valid through March 31, 2027. Mention this offer when you call (424) 328-5746.
Seasonal Tune-Up & Post-Build Check
Bought an ADU from another builder and something’s not sitting right? Bring us in for a seasonal tune-up and we’ll give you an honest read on what’s fixable and what’s not. This applies to existing ADUs and additions across San Francisco, whether we built them or not. If a covered repair from our own work fails, your second visit is free, every time.
Valid through March 31, 2027. Mention this offer when you call (424) 328-5746.
Senior & Military Courtesy Credit
We’d rather just knock a bit off the final number than make you clip anything. If you’re a senior homeowner or active-duty/veteran military in San Francisco, ask about the courtesy credit when you call. It’s applied to your written estimate before you sign, so there’s no reimbursement dance later.
Valid through March 31, 2027. Mention this offer when you call (424) 328-5746.
How to Redeem
Redeeming any of these offers takes about ninety seconds. Call (424) 328-5746 and tell the live person who answers which offer you’re interested in. You’ll get a real human, not a voicemail loop, any day of the year. Then we book your site visit and send a background-checked, uniformed technician to your property. When the visit happens, just mention the offer again and it’s applied to your written estimate on the spot. That’s the whole process: call, book, present. No forms, no codes, no fine print beyond the March 31 date.
Why We Run Specials This Way
Most ADU companies in San Francisco advertise a low number and then discover “unforeseen conditions” once the contract is signed. We don’t work that way. Every offer above sits on top of our standing policy: written price before any work starts, a 365-Day Done Right Promise, and a written guarantee on every project. The offers change the price, never the terms. You’ll always know exactly who’s on your property, what they’re doing, and what it costs before they start.
If you’re still comparing options, that’s exactly where you should be. The free written estimate is the fastest way to get a real San Francisco ADU number on paper, not a verbal range that shifts later. And if you call after hours, a live person still answers. It’s how we’ve done it since 2006, and it’s not changing.
Written by Troy Eastman, Owner & Lead Builder at Benson ADU San Francisco, serving San Francisco homeowners with written-price ADU and addition builds.
