CA License #1119373Licensed, Bonded & InsuredPowered by Future Generation ConstructionFuture Generation
Daly City ADU Builder
Sacramento-built ADUs for the Daly City lot.
We're a Sacramento design-build crew that drives down for the bigger Daly City jobs — Westlake Doelger tracts, the Hillside slopes, a Serramonte backyard — bringing real craft and pricing discipline to a town where lots are tiny and the fog never quits.
Trusted by homeowners across Sacramento & surrounding areas.
ADUs in Daly City — fast facts
County
San Mateo County
Region
Bay Area
ADU types we build
Detached, Attached, Garage Conversion, Custom
Contractor license
CSLB #1119373
Free estimate
(916) 677-9774
Last updated
Doelger lots are their own puzzle
Doelger tract lots and tuck-under garages
Daly City is mostly a Henry Doelger town, and that one fact drives almost every ADU conversation here. After the war he threw up thousands of stucco houses across Westlake and the streets above it — narrow lots, maybe 25 to 37 feet wide, sitting shoulder to shoulder, a garage tucked under the living space because the dirt was too skinny for anything detached. The "backyard" you picture may be a strip the size of a parking space. So our PM's first move on a free walk is taping real setbacks off the fence, never the assessor map, checking the tuck-under garage headroom and framing for a clean conversion, and reading access — a 30-inch side gap means concrete by pump and lumber over the fence by hand.
Free on-site walk before a dollar gets committed
Doelger tuck-under garage headroom and framing checked for conversion
Side-yard access measured honestly: hand-carry, pump truck, or no-go
The Daly City catch we won't sugarcoat
The Mussel Rock fault and eroding bluffs
Daly City's honest negative is a big one most builders gloss over: the San Andreas Fault comes ashore at Mussel Rock on the western edge, where the 1906 rupture began its run up the Peninsula. Real chunks of the west side fall inside an Alquist-Priolo earthquake fault zone, and a parcel sitting in one needs a fault-rupture study before habitable space goes up near the trace — it shifts where the unit can legally land and adds an engineering cost a photo bidder never sees. The coast is the second wrinkle: the bluffs past Skyline and Palisades, above the old Northridge slide, keep eroding, so the city watches bluff-edge setbacks. Add wind, fog, and steep Hillside and Crocker streets wanting a stepped foundation, and we check fault, bluff, and slope before drawing a slab.
Alquist-Priolo fault-zone status checked for your exact parcel up front
Coastal bluff setbacks near Skyline/Mussel Rock flagged honestly, not discovered late
Hillside slope, wind, and fog-driven weatherproofing priced into the build
Permits, in plain English
The 90th Street counter, plus the Broadmoor catch
Your ADU runs through the City of Daly City, not San Mateo County. The city is incorporated — the largest in the county — and its building and planning counter sits at the Civic Center on 90th Street. California stripped discretionary review off compliant ADUs, so once a clean in-house set clears plan check the city has to issue, with no neighborhood hearing over a parking gripe. The counter is workable but not the fastest on the Peninsula, and a sloppy submittal eats weeks in correction cycles the drafter has to answer. The catch: Broadmoor, the unincorporated pocket between Daly City and Colma with its own police district, runs through the county instead. Timing from contract to permit runs roughly 10 to 16 weeks, longer with a fault study, bluff review, or geotech, so we confirm the governing agency on the first visit.
Permit pulled through the City of Daly City Civic Center — city project, not county
Broadmoor parcels routed correctly to San Mateo County up front
Complete in-house set: site, structural, Title-24, MEP — corrections answered by the drafter
Real Daly City numbers
Westlake build costs and BART-commuter rent
Set the Sacramento price sheet aside, because northern San Mateo County is its own cost world. On a friendly Daly City lot for 2025 into 2026, a 612 sq ft one-bedroom detached ADU with mid-grade finishes runs roughly $340K to $440K all-in, a 900 sq ft two-bedroom $480K to $610K, and a Doelger tuck-under conversion where the headroom works comes in lower at $230K to $330K while keeping your skinny yard. The swing items are foundation and geology — an Alquist-Priolo parcel, a Skyline bluff-setback lot, or a steep Hillside corner each add real money. Rent is why people build: a one-bedroom fetches $2,500 to $3,200 a month, a two-bedroom $3,200 to $4,200, because Daly City is the cheaper front door to San Francisco a BART ride away. Every prospect gets a fixed-price proposal after the free walk, financing available, with a change order only if you upgrade a finish.
612 sq ft detached one-bed: roughly $340K–$440K all-in on a friendly lot (2025–2026)
Daly City one-bed ADU rents around $2,500–$3,200/mo; two-bed $3,200–$4,200
Fixed-price contract — itemized scope, financing available if you want it
ADU Services
Pick the ADU that fits your Daly City lot
Detached, attached, garage conversion, or fully custom — we design, permit, and build every type of ADU under one roof in the Greater Sacramento Area. Tap a card for the details.
“Every ADU we build is designed to add long-term value and open new possibilities for your property. Let's build something great together.”
— Tim, ADU Specialist
Custom Designs
Built to fit your property & needs
Turnkey Process
We handle permits, plans & everything
Built to Last
Quality craftsmanship that stands the test
Financing Made Simple
$0 Down Options. Build Now, Pay Over Time.
You shouldn't have to drain your savings to build wealth. We partner with trusted ADU lenders to find financing that fits — many homeowners build with little to nothing out of pocket.
Home Equity (HELOC)
Tap your existing equity at competitive rates — the most popular way to fund an ADU.
Renovation Loans
Finance the build against your home's projected after-completion value.
ADU-Specific Financing
Specialized lenders who underwrite based on the rental income your ADU will produce.
Cash-Out Refinance
Roll the project into a new mortgage and keep one simple monthly payment.
Estimate Your Monthly Payment
See what financing your ADU could look like — and how rental income can help cover it.
$180,000Loan amount
Credit Score
Very good · 700–739
Estimated Monthly Payment
$1,320/mo
At 7.99% APR over 30 years (illustrative)
Often offset by $2,000–$3,500/mo in rental income
No prepayment penalties with most partners
Pre-qualification with no impact to your credit
Illustrative only — not a loan offer. Actual rates and terms are set by third-party lenders based on your qualifications.
Service areas
Where we build
Headquartered in the Greater Sacramento Area and serving homeowners from the Sierra foothills down through the Bay Area. Don't see your city? We probably still get there — just ask.
The most common things Sacramento homeowners ask before starting an ADU project.
The City of Daly City, in almost every case. Daly City is incorporated — it's the largest city in San Mateo County — and its building and planning counter at the Civic Center on 90th Street handles your ADU's permit, plan check, and inspections. San Mateo County's building department only has authority over unincorporated land. The catch is Broadmoor, the unincorporated pocket between Daly City and Colma: it looks like part of town and shares the mailing area, but it runs through the county on the county's rules and timeline, and it even has its own police district. So address alone doesn't settle it. We confirm which jurisdiction governs your exact lot on the first visit so a plan set never lands on the wrong desk.
Often yes, and on a Daly City lot it's frequently the best-value move you can make. A huge share of Westlake and the streets above it are Henry Doelger postwar homes with a garage tucked under the living space, and California law is friendly to garage conversions — reduced setbacks, no replacement parking required in most cases. The work is real, though. A Doelger tuck-under slab often isn't thick or level enough for habitable space, the framing was built light for a car, and the ceiling height can be a foot short of legal headroom, which means a dig-down before the unit can be permitted. You're also adding insulation, a proper foundation edge, plumbing, and code egress. On a narrow lot it usually beats a ground-up detached unit on cost and keeps the small yard intact. We measure the headroom and check the framing on the first walk and tell you straight whether yours is a clean conversion.
Sometimes, but it's the very first thing we check, because Daly City lots run small and the answer drives the whole design. State law lets you build a detached ADU up to 800 sq ft (and often larger) with reduced 4-foot side and rear setbacks, which is exactly what makes tight lots buildable at all. The real constraint here is rarely the rule — it's the physical dirt. On a 30-foot-wide Doelger lot, the question is whether there's any usable flat space behind the house and whether the side gap is wide enough to get a crew and concrete back there. Up in Hillside or Crocker it's the slope instead. On a lot where a detached unit just won't fit, a tuck-under garage conversion usually will. We tape your real setbacks and measure access on the first walk so the plan fits the lot you actually have.
It can, and in Daly City this is a genuine local issue rather than boilerplate. The San Andreas comes ashore at Mussel Rock on the city's western edge, and parts of the west side fall inside a state Alquist-Priolo earthquake fault zone. If your parcel sits in one, the state requires a fault-rupture study before you can build habitable space across or near the trace, and the unit may have to be set back from the fault line. It doesn't stop an ADU — it shapes where on the lot it can go and adds an engineering step and a cost line. We check the fault map for your specific parcel on the first visit so the design respects the zone instead of running into it after the fact.
Only on the parcels close to them, but where it matters, it really matters. The sea cliffs out past Skyline and Palisades, above Mussel Rock and the old Northridge slide area, have been eroding for decades, and the city watches setback distances from the bluff edge carefully on lots near the coast. If you're back near the fault and bluff zone, an ADU may need a geotechnical and bluff-setback review to confirm it sits a safe distance from the retreating edge. Most of Daly City — Westlake, Serramonte, Hillside, the inland streets — isn't affected by this at all. But if your lot is one of the coastal ones, it's not something to discover after a slab is drawn. We pull the bluff and geotech picture for your exact parcel up front.
Because northern San Mateo County is its own cost world, top to bottom. Labor rates, material delivery into a dense built-out town, the price of working skinny lots with tight access, and the geology — fault studies, bluff setbacks, hillside foundations — all run higher in Daly City than in the Sacramento region. A friendly-lot 612 sq ft one-bed that might sit in the low $200Ks inland runs roughly $340K to $440K all-in here. The offset is the rent and the land value: Daly City one-beds rent for $2,500 to $3,200 a month, it's a BART ride from San Francisco, and the underlying lot is worth a fortune, so the investment still pencils even at full Bay Area build pricing. We quote the real number on the first visit — no bait-and-switch off an inland price sheet.
On a friendly lot, budget about $340K to $440K all-in for a 612 sq ft one-bedroom detached ADU with mid-grade finishes, and roughly $480K to $610K for a 900 sq ft two-bedroom with upgraded finishes. A Doelger tuck-under garage conversion, where the headroom works, often comes in lower — around $230K to $330K — and keeps your small yard. The biggest cost drivers after size are the foundation and the geology: a parcel in the Alquist-Priolo fault zone, a coastal bluff-setback lot, or a steep Hillside corner can each add real money over a plain flat slab. You get a fixed-price proposal after the free walk, so the final number is locked before you sign rather than guessed at.
Yes, and slope is something we deal with regularly on the Peninsula — it just has to be priced honestly from the start. A sloped Hillside or Crocker lot usually means a stepped foundation, deeper footings, or piers into competent soil at the downhill end, plus a grading and drainage plan the city will want. With Daly City's wind and fog, drainage detailing matters more here than people expect. The upside is those upper streets sometimes carry a view, and the rents support the build. We read the grade on the first walk and tell you straight whether you're looking at a modest hillside foundation or a serious one, so the number reflects the actual dirt.
California puts a 60-day clock on the City of Daly City to approve or return corrections on a complete ADU application, and discretionary review is gone, so there's no neighborhood hearing to derail you. In practice, realistic timing from signed contract to permit in hand runs about 10 to 16 weeks here, and longer if the lot triggers a fault-rupture study, a coastal bluff-setback review, or geotech. Daly City's counter is workable but not the fastest on the Peninsula, and it's still a thorough plan check. The main variable you can control is how clean the drawings go in, which is exactly what an in-house plan set drawn by the people who answer the city's comments is for.
Yes, deliberately and for the right projects. We're a Sacramento design-build outfit, CA license #1119373, and Daly City is roughly a two-hour run down I-80 across the Bay Bridge or around through the South Bay. We don't pretend that's around the corner — it's a real drive, which is why we take the larger Daly City ADU jobs where homeowners want Sacramento-area craftsmanship and pricing discipline on a build worth the travel. A detached unit, a serious Doelger garage conversion, a hillside build up in Crocker: those justify the trip and get a steady crew presence, not a contractor who vanishes for two weeks. Call (916) 677-9774 and we'll talk through whether your project is the right fit.
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We treat every home like it's our own — quality work, clear communication, and happy homeowners.
PaulOwner · Future Generation
7 min read1,630 words8 sections
Building an ADU in Daly City: what a Sacramento contractor learned working the fog line
Daly City is the largest city in San Mateo County and the first town south of the San Francisco line, and it does not build like the inland suburbs we call home. Most of it is Henry Doelger tract housing — skinny lots, stucco rows, garages tucked under the living space. The San Andreas Fault comes ashore on the west edge, the coastal bluffs are eroding, and the fog pours through the gap off the Pacific most of the year. We're a Sacramento design-build crew that takes the Daly City jobs worth the drive. Here's the honest version.
01Section
How Doelger's tracts made the backyard valuable
You can't talk about Daly City without Henry Doelger. After World War II he bought up the windswept dunes west of the county line and built thousands of near-identical stucco houses across Westlake and the streets above it, the pastel rows immortalized in a song about little boxes on a hillside. Those homes are the bones of the city: narrow lots, attached tuck-under garages, houses set close enough to pass the sugar through the side windows. The city filled in around them with Serramonte's subdivisions, the apartments near BART, older Original Daly City near Mission, and the steep streets of Hillside and Crocker.
What makes an ADU pencil here even at Peninsula costs is location and scarcity. Daly City is the cheapest front door to San Francisco, minutes from the county line and a short BART ride from downtown. When a modest Doelger house clears well over a million, the unused 600 square feet behind it, or the garage under it, becomes the most valuable thing you can build. Demand was never the question here. The lots, the geology, and the rules were.
