Decks
New decks, deck repairs, rebuilds, structural engineering, permit support, and construction services.
Learn moreGPJ Residential
Residential Engineering & Construction for San Francisco Bay Area Homes
From decks and ADUs to additions, structural repairs, permits, and construction, we help homeowners move projects from idea to completion.
Serving San Francisco Bay Area Homeowners for Over 40 Years
Services
Residential project types we help with
ADUs
Detached ADUs, garage conversions, attached ADUs, junior ADUs, and multifamily ADU support.
Learn more
New Homes & Additions
Structural/civil engineering, permit support, additions, remodels, and ground-up residential projects.
Learn more
Structural & Civil Engineering
Residential engineering support for foundations, framing, retaining walls, drainage/site considerations, calculations, and permit corrections.
Learn more
Repairs & Retrofits
Structural repairs, seismic-related upgrades, foundation issues, deck/balcony repairs, and existing-condition support.
Learn moreExperience
Why choose GPJ Residential
Professional Engineering for Your Home
Structural and civil engineering for foundations, framing, repairs, and the calculations a home permit set may require.
Engineering with a Builder's Perspective
Recommendations that account for how the work will be permitted, inspected, and built.
Clear Guidance on What You Need
A direct recommendation on whether the next step is engineering, permit help, a repair, or coordination with people already involved.
Continuity from Design Through Construction
If the project continues, permitting, repairs, and construction can stay with the same practice.
Process
A straightforward process
1
Tell us about your project
Share the property, what you are planning, and the kind of help you need.
2
We review the property, scope, and available information
We look at the project type, site conditions you describe, and the documents or photos you can provide.
3
We recommend the right path
You get a practical recommendation for engineering, permitting, repair, or construction — or a mix of those.
4
We support the work
We stay with the project through plans, permits, repairs, or construction as appropriate.
How can we help?
I know what I want to build
You already have a deck, addition, ADU, or other project in mind. Describe the property and what you want done.
Tell Us About Your ProjectSomething is wrong with my home
A deck, foundation, balcony, or other existing condition needs a look before anyone opens it up. Photos are enough to begin.
Tell Us About Your ProjectThe city asked for engineering
You have plan-check comments or a request for calculations. Send the comments and any drawings you already have.
Tell Us About Your ProjectI’m not sure what I need
You have a property and a question. We will say whether the next step is an engineer, a builder, permit help, or something else.
Get Project Guidance