ADU Design & Construction

ADU Builder in the Bay Area-

Design, Permits & Construction in One Team

Build your ADU in the Bay Area with a fully integrated design-build team. Bridgford Construction specializes in ADU design, permitting, and construction in San Jose and surrounding cities, delivering a faster, more predictable process from concept to completion.

Whether you’re building a detached ADU, garage conversion, attached unit, or JADU, we manage every step to ensure your project stays on schedule and on budget.

Schedule a Free ADU Consultation
Schedule a Free ADU Consultation
  • Modern open-concept living room and kitchen with white walls, large windows, wooden ceiling beam, gray sofa with black and white pillows, dining table with chairs, kitchen cabinets, and appliances, overlooking a backyard with a wooden fence and greenery.

  • Modern bathroom with a walk-in shower enclosed by glass, a small window above the shower, a towel hanging on a towel bar on the left wall, a framed black and white artwork on the right wall, and a white toilet on the right side.

  • A bedroom with white walls and a white bedspread, decorated with pink and patterned pillows. There is a wooden chair with a faux fur throw and patterned pillow, and a tall green plant in the corner. An opening in the wall reveals a living room with a couch and large window.

  • A large patio with gray paver stones in front of a gray house with a porch and black door. There are trees and a clear blue sky in the background.

  • Bright, modern kitchen with white cabinetry, a large white island, stainless steel appliances, black-framed windows, pendant lights, and a built-in bench seating area.

  • A bathroom vanity area with a white countertop, a rectangular gold-framed mirror, gold wall-mounted light fixtures, a white towel, and two wooden shelves with gold brackets. One shelf holds framed artwork and a decorative item, while the other has framed artwork with heart images.

  • A modern house with a beige exterior, white window frames, and a small front porch with steps. The backyard has a well-maintained lawn, stepping stone pathway, landscaped plants, and a wooden fence. The sky is partly cloudy with trees in the background.

Types of ADUs we Build in the Bay Area

We design and build all types of Accessory Dwelling Units (ADUs) across San Jose, Santa Clara, Sunnyvale, and nearby cities.

  • A standalone structure built in your backyard. Ideal for rental units, guest houses, or private living spaces with maximum separation from the main home.

  • Built as an extension of your existing home, sharing at least one wall. A great option when lot space is limited but additional square footage is desired.

  • One of the most cost-effective ADU options. Existing garages are converted into fully functional living spaces with kitchen, bath, and living areas.

  • Smaller units (typically within the existing home) that include efficiency kitchens and separate entrances. A flexible option for multi-generational living or caregivers.

Accessory Dwelling Units (ADUs) are one of the most effective ways to add livable space, increase property value, and create flexible housing for family or rental income. At Bridgford Construction, we design, permit, and build ADUs across the Bay Area through a streamlined design-build process that keeps your project efficient, transparent, and on budget.

ADU Permits in the Bay Area

Permitting is one of the most complex parts of building an ADU in California. We handle the entire process for you:

  • ADU feasibility and zoning analysis

  • Architectural design and engineering plans

  • Title 24 energy compliance

  • City plan check and permit approvals

  • Coordination with local Bay Area building departments

We regularly work with cities including San Jose, Saratoga, Santa Clara, Sunnyvale, Mountain View, and Cupertino.

Modern white kitchen with black-framed windows and a vaulted ceiling with white wooden panels. Features two large pendant lights, a built-in gray cushioned bench with a marble-topped table, and several black chairs around the table. The kitchen has white cabinetry, stainless steel appliances, and hardwood floors.

California ADU Laws

(SB 9 & Local Regulations)

California ADU laws and SB 9 housing regulations have made it easier than ever to build additional housing—but local rules still apply.

We evaluate your property for:

  • Setbacks and height restrictions

  • Lot coverage requirements

  • Parking rules

  • City-specific zoning regulations

This ensures your ADU design is fully compliant before construction begins.

Minimalist kitchen with white cabinetry, beige countertop, small window above sink showing blue sky, and various kitchen items including a plant, jars, and a kettle.

Let’s Work Together

If you would like to schedule a free consultation, complete the form with a few details about your project. We'll review your message and get back to you within 48 hours.

Frequently Asked Questions

  • Yes. Most cities allow long-term ADU rentals, though short-term rental rules vary by location.

  • Typically 8–16 months from design through construction.

  • Architectural plans, engineering, Title 24 compliance, and city building permits.

  • Yes—ADUs typically increase property value and rental income potential.