From Our Engineers

Lessons from Real California Projects

We design and engineer homes across California — ADUs, additions, remodels, and inspections. These articles share what we learn on the job, so you can plan your own project with fewer surprises.

All Articles

Filter articles by category
Cutaway diagram showing how fire affects wood framing, steel, concrete foundations, and structural connections in a Los Angeles home

Homeowner Guides

Los Angeles Fire Damage Repair and Rebuild: Can the Foundation Be Reused?

A Los Angeles homeowner guide to engineering evaluation, testing, foundation reuse documentation, and the permit path after a major house fire.

· 10 min read

Conceptual older Oakland multifamily building with a separate ground-level ADU entrance

ADU

Oakland Unpermitted ADU Legalization: A Practical Permit Guide

A records-first guide to Oakland's local amnesty, enforcement delay, AB 2533, permit plans, inspections, and site constraints for an older unpermitted unit.

· 13 min read

Editorial illustration of an engineer examining a repaired horizontal crack and damp soil in a residential crawl space

Homeowner Guides

Water in a Crawl Space: When It Becomes a Foundation Concern

A real Pleasanton inspection shows why acceptable floor elevations do not cancel standing water, a repaired horizontal crack, or poor exterior drainage.

· 10 min read

Engineer inspecting a residential foundation crack with a flashlight and laser level

Homeowner Guides

California Foundation Inspection Guide: Cracks, Settlement, and Repair Decisions

A homeowner guide to foundation warning signs, floor-elevation surveys, old repair clues, and the evidence needed before choosing a repair.

· 9 min read

Detached backyard dwelling beside mature trees and landscaped open space

ADU

Walnut Creek Detached ADU Permits: Trees, Setbacks, and Current Exemptions

How Walnut Creek's general tree-removal rule interacts with current state-exempt ADU standards, plus a site-first feasibility checklist.

· 8 min read

Conceptual attached ADU beside a hillside home in unincorporated San Mateo County

ADU

San Mateo County Attached ADU Permits: Check the Site Before You Design

A practical pre-design guide to jurisdiction, septic, Coastal Zone, hazard overlays, and current Midcoast constraints for attached ADUs.

· 8 min read

Conceptual Los Angeles single-family house with a modern rear addition

Homeowner Guides

Los Angeles House Addition Permits: 5 Clearances to Check Before Design

A homeowner guide to the zoning, plan-check, hillside, historic, and coastal clearances that can change a Los Angeles home addition.

· 8 min read

Conceptual front-facing addition massing on a Fremont single-family home

Homeowner Guides

Fremont Front-Yard Home Addition Setbacks: Why 20 Feet Is Not a Universal Rule

Why Fremont front setbacks vary by zoning district, and how driveway depth, parking, and parcel records affect a front-facing addition.

· 6 min read

Conceptual San Francisco rescue-access route carrying a fire ladder from the street through a narrow home to a rear ADU

Laws & Regulations

How San Francisco EG-02 and AB-005 Can Change a Remodel or ADU Layout

A homeowner guide to EG-02 rescue access, the 3-foot ladder route, AB-005 local equivalency, and layout risks for San Francisco remodels and rear ADUs.

· 9 min read

Exterior elevated balconies on a California multifamily apartment building

Laws & Regulations

California SB 721 Balcony Inspection Law: Requirements, Deadlines, and What Happens After January 2026

A plain-English guide to SB 721: which buildings are covered, what inspectors examine, repair timelines, and the compliance steps for owners past the January 2026 deadline.

· 12 min read