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Linda Mar
Pacifica’s largest neighborhood. 1950s–1960s tract homes on lots ranging from compact to nearly half an acre. The valley floor is relatively flat; lots closer to the foothills gain elevation. Strong ADU candidates across the board.
Pacifica-Based — CSLB #1041528
ADU Construction in Pacifica — Built by the Contractor Who Lives Here
From hillside pier foundations in Pedro Point to garage conversions in Linda Mar — we design, permit, and build ADUs on the terrain we know best.
Why Local Expertise Matters
Pacifica is a city built on slopes.
From the hillside streets of Pedro Point climbing San Pedro Mountain to the valley floor of Linda Mar to the bluffs above Sharp Park, nearly every lot in this town has a grade change, a retaining wall, or a view that exists because the ground isn’t flat.
That matters when you’re building an ADU — because the foundation, drainage, and structural decisions that a hillside lot demands are nothing like what a builder faces on a level suburban parcel in the South Bay. A detached ADU in Pedro Point may need pier foundations drilled into Franciscan bedrock and an engineered retaining wall before a single stud goes up. A garage conversion in the Linda Mar flats still has to account for the coastal moisture that’s been working on that slab for sixty years.
“We don’t drive in from San Jose or Oakland to build here. We live in this fog belt, we’ve framed walls on these hillsides, and we’ve pulled permits at the Pacifica planning counter more times than we can count.”
ACI is based at 188 Clarendon Road — less than two miles from Linda Mar Beach. When we evaluate your lot, we already know what the soil is likely doing, where the drainage needs to go, and which construction challenges your neighborhood presents.
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Based In Pacifica
188 Clarendon Rd. — less than 2 miles from Linda Mar Beach. We live and work here.
Local Market
Why Pacifica Homeowners Are Building ADUs
$1.3M
Median Home Price
Pacifica’s appreciation makes ADU investment highly defensible
$2,800
Max Monthly Rent
Typical range for a 1-bed ADU. 2-beds can command $3,000+
4 ft
Minimum Setback
State law allows this for detached ADUs under 800 sq ft
The median home price in Pacifica is roughly $1.3 million. Most of these homes sit on lots that were subdivided in the 1950s, when the collection of small coastal towns — Sharp Park, Linda Mar, Vallemar, Rockaway Beach, Pedro Point — incorporated into a single city to avoid annexation by San Bruno. The houses that went up during that era were modest: 1,000 to 1,400 square feet, three bedrooms, one or two baths, built on lots that ranged from a compact 3,500 square feet to a generous half acre in the hillside neighborhoods.
Seventy years later, those lots are the opportunity. The homes may need updating — and many do — but the land they sit on can now legally support an additional dwelling unit under California’s ADU laws. No owner-occupancy requirement. No replacement parking needed for a garage conversion. A 60-day permitting timeline. And setbacks as tight as four feet for detached ADUs under 800 square feet.
A one-bedroom ADU in Pacifica can rent for $2,000 to $2,800 per month. A two-bedroom unit — if your lot supports the footprint — can command $3,000 or more. The rental demand is driven by Pacifica’s position as an affordable alternative to San Francisco (fifteen minutes north on Highway 1) and its appeal to remote workers, young families, and people who’d rather live near the ocean than in a South Bay office park.
15 min
to San
Francisco
For multigenerational families, the case is even simpler: keep your aging parent close without sharing a wall, or give an adult child a genuinely independent living situation on the same property. Pacifica’s slower pace and tight-knit neighborhoods make it one of the best places on the Peninsula for this arrangement.
Terrain & Construction
Building an ADU on Pacifica’s Terrain
Pedro Point · Vallemar · Fairmont · Sun Valley · Rockaway Beach
Hillside Lots
If your home is on a slope — and in Pacifica, there’s a good chance it is — your ADU project starts with the ground, not the floor plan.
Pedro Point is the most dramatic example. Streets here climb the western slopes of San Pedro Mountain, narrow and winding, bordered by cypress and Monterey pine. Lots are irregular, often steep, and many homes are one-of-a-kind structures. Building a detached ADU on a Pedro Point lot typically means drilling pier foundations to reach stable bearing, constructing an engineered retaining wall to create a level building pad, and designing drainage that moves water away from both structures.
Vallemar and Fairmont present similar conditions at lower elevations — sloped lots between Highway 1 and Skyline Boulevard, where retaining walls aren’t cosmetic but structural. Rockaway Beach sits in a narrow cove between two headlands, where salt air, coastal wind, and moisture conditions affect material choices.
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Retaining walls, pier foundations, grading, and drainage aren’t add-on services we scramble to figure out. They’re core to how we build in Pacifica.
Linda Mar · Sharp Park · Park Pacifica
Valley & Flatland Lots
Linda Mar is Pacifica’s largest residential neighborhood — a wide valley of tract homes built primarily in the 1950s and 1960s, with lot sizes ranging from around 3,500 square feet to nearly a half acre. The terrain is gentler here, and many lots have backyards with enough room for a detached ADU without the retaining wall and pier foundation work that hillside lots demand.
That said, “flat” in Pacifica is relative. Many Linda Mar lots have subtle grade changes that affect drainage. And the homes themselves — sixty-plus years old — present their own challenges when you’re tying an attached ADU into the existing structure. Original foundations may be undersized for additional load.
Sharp Park has an eclectic mix: ranch-style homes from the 1950s to 1970s, converted summer cottages dating back to the early 1900s, and hillside properties with sweeping views. Park Pacifica, farther back in the Linda Mar valley, features larger 1970s homes on more generous lots — often the most straightforward ADU sites in the city.
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Homes in Linda Mar and Sharp Park are 60+ years old. Original foundations may need assessment before adding load from an attached ADU or second story.
Permitting
Pacifica ADU Permitting — What to Expect
Pacifica’s ADU permitting process is ministerial — meaning if your plans meet the city’s objective development standards, approval isn’t discretionary. You don’t need a public hearing. You submit plans, the city reviews them against the code, and you get your permit.
Size Limits
Detached ADUs up to 1,200 sq ft. Attached ADUs capped at 850 sq ft (one-bedroom) or 1,000 sq ft (two+ bedrooms), or 50% of the primary dwelling, whichever is greater. JADUs limited to 500 sq ft.
Height Limits
Detached ADUs can match the primary dwelling’s height or 25 feet, whichever is less. In front of the primary dwelling or within its setbacks, the limit drops to 16 feet.
Setbacks
Detached and attached ADUs require 4-foot side and rear setbacks and a 15-foot front setback (20 feet if above a garage).
Parking
One space may be required, but parking is waived within a half-mile walking distance of public transit — which covers a significant portion of Pacifica along SamTrans routes.
Coastal Zone
Parts of Pacifica fall within the Coastal Zone, requiring a Coastal Development Permit on top of the standard building permit. We know which properties are affected and factor this into the timeline from day one.
No Short-Term Rentals
Pacifica does not allow ADUs to be used as short-term rentals. Your unit can be rented for periods of 30 days or longer — which still means strong monthly income in this market.
Recent permit fees: A 1,000-square-foot detached ADU permitted in 2022 carried approximately $13,000 in permit fees. A 297-square-foot garage-to-JADU conversion was approximately $3,800. No impact fees apply for ADUs under 750 square feet.
The city recommends — and we strongly agree — scheduling an early appointment with a planner before submitting. This pre-application meeting catches potential issues (setback conflicts, Coastal Zone triggers, tree proximity requirements, utility capacity) before you’ve invested in a full set of construction documents. We attend these meetings with our clients.
Neighborhoods
Neighborhoods We Build In
- 📍Sharp Park
Pacifica’s oldest and most architecturally varied neighborhood. Ranch homes, converted cottages, hillside customs, and a mobile home park along the cliffs. Lot conditions vary significantly — we evaluate each one individually.
- 📍Pedro Point
Hillside homes climbing San Pedro Mountain with narrow streets, steep lots, and ocean views. ADU construction here almost always requires engineered foundations and retaining walls. Challenging work — and our kind of work.
- 📍Vallemar
Hillside lots between Highway 1 and Skyline with a mix of older and custom homes. Sloped terrain, mature trees (check tree proximity requirements before design), and generous lot sizes in some areas.
- 📍Park Pacifica
1970s homes on larger lots at the back of the Linda Mar valley. These properties often have the most straightforward path to a detached ADU: space, access, and manageable terrain.
- 📍Rockaway Beach
A compact cove neighborhood with marine exposure. Smaller lots and salt-air conditions shape both the ADU design and the material specifications.
- 📍Fairmont & Sun Valley
Hillside and ridge-top neighborhoods with varied lot sizes and slope conditions. Late-1950s housing stock that’s aging into renovation territory.
- ☎Not Sure?
Every lot is different. Call us at (650) 224-3052 and describe your property. We’ll tell you what’s typically feasible in your neighborhood before you schedule a visit.