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General Building & Remodeling · San Mateo, CA

ADU (Accessory Dwelling Unit) Construction in San Mateo

Expert adu (accessory dwelling unit) construction for San Mateo homeowners near Central Park, Hillsdale Shopping Center, and the Caltrain station. Peninsula-grade workmanship with pricing set by local pros and a workmanship warranty.

  • Pricing set by local pros
  • Your pro’s own warranty
  • Before & after photos
  • Background checked

Bigger or unusual job? Compare bids from local pros and you pick who does the work.

Book several services with one pro. Pros set their own bundle discounts.
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Bigger or unusual job? Local pros bid on it and you pick who does the work.

ADU (Accessory Dwelling Unit) Construction in San Mateo

ADU (Accessory Dwelling Unit) Construction across San Mateo

What to know about adu (accessory dwelling unit) construction here, and how NorTech helps you book it.

IN SAN MATEO

Looking for adu (accessory dwelling unit) construction in San Mateo? NorTech connects San Mateo homeowners with vetted, background-checked independent providers who specialize in adu (accessory dwelling unit) construction for single-family homes, townhomes, condominiums, duplexes, multi-unit properties, and commercial properties. Every San Mateo adu (accessory dwelling unit) construction job is priced up front, documented with before-and-after photos, and backed by a workmanship warranty.

WHY PEOPLE BOOK IT

Homeowners, renters, landlords, property managers, short-term-rental hosts, and local businesses in San Mateo's Baywood expect the quality of work to match the quality of their homes, and the adu (accessory dwelling unit) construction providers NorTech connects you with are calibrated to exactly that standard.

HOW NORTECH HELPS

San Mateo's flat streets and easy parking help providers arrive within your booked window.

WHEN TO BOOK

Pre-rainy season exterior work, earthquake prep, and property investment upkeep — book online in 2 minutes or ask Nova for a same-day estimate.

PROS COVER NEIGHBORHOODS LIKE
BaywoodHayward ParkBay MeadowsSan Mateo ParkAragonSugarloafShoreviewNorth Central

What is included

What adu (accessory dwelling unit) construction covers

The core of every job. Each pro lists their own options and add-ons before you book.

  • Site visit, feasibility review and a written scope
  • Coordination of plans, engineering and permits
  • Foundation, framing, roofing, windows and exterior finishes
  • Electrical, plumbing, HVAC and utility connections
  • Insulation, drywall, flooring, kitchen and bath finishes
  • City inspections, final sign-off and certificate of occupancy

Read the full adu (accessory dwelling unit) construction guide →

90-Day Warranty

Your pro backs the work with a workmanship warranty — if covered work is not right, your pro makes it right, free.

How it works

Booking adu (accessory dwelling unit) construction in San Mateo takes 2 minutes

  1. See the pros near you

    Enter your San Mateo ZIP and pick adu (accessory dwelling unit) construction. You see the pros who cover it, each with their own price and warranty.

  2. Choose a vetted local pro

    Every pro is background-checked and independent. Compare them and choose the one who knows San Mateo and homes like yours.

  3. Documented work, backed by a warranty

    Before-and-after photos land in your portal, and your pro backs the work with their own warranty.

Together

Book adu (accessory dwelling unit) construction with your neighbors

Neighbors on one street can book the same pro on the same day. Pros who offer a neighbor rate take their own percent off for every household that joins, so a street of adu (accessory dwelling unit) construction jobs costs each home less. You start one, pick the pro and send your neighbors a link.

Start a Street Day

San Mateo homeowners

ADU (Accessory Dwelling Unit) Construction reviews in San Mateo

Verified adu (accessory dwelling unit) construction reviews from San Mateo homeowners will appear here.

Be the first adu (accessory dwelling unit) construction review in San Mateo

Your pro backs the work with a workmanship warranty — if covered work is not right, your pro makes it right, free. Book with confidence and tell San Mateo how your pro did.

Book ADU (Accessory Dwelling Unit) Construction in San Mateo

Frequently asked

ADU (Accessory Dwelling Unit) Construction in San Mateo: common questions

More in San Mateo

Other services in San Mateo

Each one has its own page for this city.

Stucco Sealing & Waterproofing

San Mateo's older Spanish colonial and stucco-clad homes benefit from sealing before the winter rains roll in off the bay.

See pros in San Mateo
Gutter Cleaning

Clearing gutters ahead of the Peninsula's wet season helps protect tree-shaded homes near Central Park and Baywood from water intrusion.

See pros in San Mateo
Grab Bar & Aging-in-Place

A practical upgrade for San Mateo's longtime residents looking to stay comfortably in their established Hayward Park and Shoreview homes.

See pros in San Mateo
TV Mounting & AV Setup

Great for the modern condos and new-construction units near Bay Meadows and the Hillsdale corridor where clean, secure mounts matter.

See pros in San Mateo
Pressure Washing

Refresh driveways, patios, and walkways dulled by Peninsula fog and damp before listing or hosting in San Mateo Park and Aragon.

See pros in San Mateo
Backyard Cottage & Detached Guest House Build

Construction of a backyard cottage or detached guest house by a licensed general contractor, from foundation to finishes, with utilities and permits.

See pros in San Mateo

Nearby

ADU (Accessory Dwelling Unit) Construction in nearby cities

Pros often cover more than one city.

Burlingame
2.7 miles away

ADU (Accessory Dwelling Unit) Construction in Burlingame, CA.

ADU (Accessory Dwelling Unit) Construction there
Hillsborough
2.9 miles away

ADU (Accessory Dwelling Unit) Construction in Hillsborough, CA.

ADU (Accessory Dwelling Unit) Construction there
Foster City
3.0 miles away

ADU (Accessory Dwelling Unit) Construction in Foster City, CA.

ADU (Accessory Dwelling Unit) Construction there
Belmont
4.0 miles away

ADU (Accessory Dwelling Unit) Construction in Belmont, CA.

ADU (Accessory Dwelling Unit) Construction there
Millbrae
4.2 miles away

ADU (Accessory Dwelling Unit) Construction in Millbrae, CA.

ADU (Accessory Dwelling Unit) Construction there
San Carlos
5.2 miles away

ADU (Accessory Dwelling Unit) Construction in San Carlos, CA.

ADU (Accessory Dwelling Unit) Construction there

Ready to book adu (accessory dwelling unit) construction in San Mateo?

Tell us the job and your ZIP. You see the pros near you, each with their own price, and you choose.

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A bundle books several services with one pro. Pros set their own bundle discounts.