GPJ ResidentialGPJ Residential

Services

Residential Engineering & Construction Services

Structural and civil engineering, permit support, repairs, and construction for San Francisco Bay Area homes. Choose the kind of work below, or tell us about the property if you are not sure which one fits.

Wood deck with cable railing

Decks

New Decks, Repairs & Rebuilds

  • New deck engineering and construction support
  • Deck repairs and structural upgrades
  • Deck replacement and rebuilds
  • Permit drawings and calculations
  • Stairs, guards, railings, framing, footings, and support systems
  • Existing deck condition review
Detached backyard ADU behind a San Francisco Bay Area home

ADUs

ADU Feasibility, Engineering, Permitting & Construction Support

  • Detached ADUs
  • Garage conversion ADUs
  • Attached ADUs
  • Interior / Junior ADUs
  • Basement or lower-level conversions
  • Multifamily ADU opportunities
  • Permit-path and feasibility review
  • Structural/civil engineering and construction support
House with a glass opening to the yard

New Homes & Additions

Engineering and Building Support for Residential Expansion

  • New custom homes
  • Room additions
  • Rear additions
  • Second-story additions
  • Major remodels
  • Wall removals and structural modifications
  • Foundation and framing support
  • Permit drawings and calculations
  • Construction support
Residential structural drawings and project notes on a desk

Structural & Civil Engineering

Residential Engineering for Permits, Repairs, and Construction

  • Structural calculations
  • Foundation design/review
  • Framing design
  • Beam/header sizing
  • Retaining wall support, if applicable
  • Civil/site considerations
  • Drainage and grading coordination, if applicable
  • Permit correction responses
  • Engineering letters/reports when appropriate
Foundation with steel piers and a cracked wall

Repairs, Retrofits & Existing Conditions

Practical Solutions for Existing Residential Structures

  • Structural repairs
  • Foundation issues
  • Seismic-related upgrades
  • Dry rot or deterioration repairs
  • Deck and balcony repairs
  • Retaining wall repair support
  • Unpermitted or existing-condition project support
  • Repair recommendations and permit support

Have a residential project or a structural concern?

Tell us about the property and what you are considering.

Tell Us About Your Project