Remodeled California home with new landscaping at sunset

Walnut Creek, California

Home & landscape remodeling, built by one accountable crew.

Bay Harbor Remodeling and Construction renovates kitchens, baths and whole homes, transforms yards, and builds ADUs across the East Bay — licensed, permitted and finished on schedule.

  • CSLB Lic. #1148311
  • Licensed, bonded & insured
  • Serving the East Bay since 2015

Why homeowners choose us

One accountable team, from first idea to final walkthrough

No handoffs

Design, permitting and construction sit with one accountable team — nothing gets lost between a design firm and a separate contractor.

Itemized budgets

Line-item proposals instead of vague allowances, so you can see exactly what each part of the project costs.

In-house permitting

We prepare drawings and handle city submittals ourselves, so your project doesn't stall waiting on plan review.

One project manager

A single point of contact, weekly updates and a clean job site from demolition through the final punch list.

Modern detached ADU with cedar siding and black window frames

ADUs & garage conversions

Add living space — and long-term value — to your lot

California ADU rules make it easier than ever to build a guest suite, rental unit or home office in your backyard. We handle feasibility, design, city approvals, utilities and construction from start to finish.

  • Detached new-build ADUs and JADUs
  • Garage and basement conversions
  • Site feasibility, setbacks and utility planning
  • Plans, permitting and inspections managed for you
  • Rental-ready kitchens, baths and separate metering
Ask about your ADU

Recent work

Craft you can see in the details

A sample of remodels and outdoor builds across Walnut Creek and neighboring East Bay towns.

View the full portfolio
Remodeled kitchen with light oak cabinetry and quartz counters
Kitchen remodel — Walnut Creek
Backyard patio with pergola and outdoor kitchen
Backyard & hardscape — Danville
Renovated bathroom with glass shower and double vanity
Primary bath — Lafayette
Detached ADU with cedar siding in a backyard
Detached ADU — Concord

How it works

A clear process, from first walkthrough to final punch list

01

Walkthrough

We visit the property, listen to your goals and talk honestly about scope and budget range.

02

Design & Bid

Plans, selections and a line-item proposal — no vague allowances or hidden line items.

03

Permits

We handle city submittals and inspections so the build stays on the right side of code.

04

Build & Handoff

One project manager, a clean site, weekly updates and a final walkthrough punch list.

See the full 8-step process

Get in touch

Tell us about your project

Call, email, or send a few details and we'll set up a free on-site walkthrough in Walnut Creek and the surrounding East Bay.

Request an estimate

Prefer to talk? Call (925) 766-2200 — we answer during business hours.

Service area

Building across Contra Costa and the greater East Bay

Based in Walnut Creek, we work throughout Contra Costa, Alameda and southern Solano counties. If your city is on this list, we can be on site for a walkthrough.

Central Contra Costa

  • Walnut Creek, CA
  • Lafayette, CA
  • Orinda, CA
  • Moraga, CA
  • Alamo, CA
  • Danville, CA
  • San Ramon, CA
  • Pleasant Hill, CA
  • Concord, CA
  • Clayton, CA
  • Martinez, CA
  • Pacheco, CA

East & North County

  • Pittsburg, CA
  • Antioch, CA
  • Brentwood, CA
  • Oakley, CA
  • Bay Point, CA
  • Discovery Bay, CA
  • Benicia, CA
  • Vallejo, CA

West County & Tri-Valley

  • Richmond, CA
  • El Cerrito, CA
  • Kensington, CA
  • Hercules, CA
  • Pinole, CA
  • Pleasanton, CA
  • Dublin, CA
  • Livermore, CA
  • Castro Valley, CA

Inner East Bay

  • Berkeley, CA
  • Albany, CA
  • Oakland, CA
  • Piedmont, CA
  • Alameda, CA
  • Emeryville, CA
  • San Leandro, CA

Field notes

Guides for East Bay homeowners

All guides

Ready to start your project?

Send a few details and we'll set up a free on-site consultation in Walnut Creek or anywhere in the East Bay — usually within one business day.