Crawl space repair in San Diego. The hidden half of your house.
Most pre-1980 San Diego homes are raised foundations with a crawl space underneath. The post-and-pier system, cripple walls, and floor framing all live down there, out of sight, until something goes wrong. Sloping floors, bouncy spots, and musty odors in the bedrooms upstairs almost always trace to crawl space conditions. We work in the crawl, document with photos, and rebuild what needs rebuilding.
What's included in this service?
- Crawl space inspection with photo documentation and elevation mapping
- Cripple wall replacement (rotted, undersized, or non-bolted)
- Post-and-pier rebuild with concrete piers and pressure-treated posts
- Sister-joist, sub-floor, and beam repair
- Seismic retrofit (CRMP-compliant brace and bolt) where requested
- Vapor barrier installation with 6-mil poly, sealed and overlapped
- Crawl space drainage and sump where water is a recurring issue
- Subfloor insulation replacement after rodent damage or moisture
When do you need this service?
- Bouncy or sloping floors over a raised foundation
- Visible rot, splits, or insect damage on posts or joists
- Standing water or persistent moisture in the crawl space
- Plumbing leak under the home (need access for repair)
- Pre-listing or pre-purchase repair to remove disclosure issues
- Seismic retrofit grant program eligibility (Earthquake Brace + Bolt)
What do homeowners ask about Crawl Space?
What is a cripple wall and why does it matter?
A cripple wall is the short stud wall between the perimeter foundation and the first floor on a raised home. In older San Diego homes (pre-1960) the cripple wall was often built without bolts or shear sheathing; in an earthquake it can collapse and drop the house. Brace-and-bolt retrofit adds plywood sheathing and anchor bolts to make the wall behave as designed.
Should I encapsulate my crawl space?
Sometimes. Full encapsulation (sealed vapor barrier, conditioned air, dehumidifier) is overkill for most San Diego homes because our humidity is low. A standard 6-mil sealed vapor barrier on the dirt is usually enough. We recommend full encapsulation only for homes with persistent moisture or chronic mold.
Do you handle Earthquake Brace + Bolt grant work?
Yes. We are familiar with the EBB program requirements and the standard retrofit plan set. We can do the work under the grant, document it for the program, and coordinate the inspection.
Can you fix the floors from underneath instead of tearing them up?
Often, yes. Sloping floors caused by a sagged beam or rotted post can be jacked, rebuilt, and re-supported from the crawl side without ever opening the finished floor above. Settled perimeters are different and may need exterior pier work.
Where do we offer Crawl Space in San Diego County?
We provide crawl space in every city and community in San Diego County. Pick your city for local climate notes and service specifics.
See crawl space in all 48 cities
Homeowners who hired us for this
Examples of the kind of feedback we work to earn on every job. Verified reviews from real customers live on our Google Business Profile and Yelp pages.
Cracks at our window corners had me convinced we needed major repairs. Their inspector did the level survey, mapped every crack, and told us straight up the foundation was stable old movement and we did not need underpinning. Free inspection, honest answer, no pressure.
Got three quotes for foundation work. Two pushed full perimeter underpinning, Base Pro recommended four piers at the settled corner only and saved us $18,000. Engineer signed off, permit pulled, work was clean. House is solid two years later.
Active leak through a foundation crack after the January storm. They came out, identified it as a non-structural water issue, injected hydrophobic polyurethane, and pointed out that our downspout above the crack needed an extension. Both fixes done in one visit, leak gone.
Need crawl space in San Diego County?
Call for a free quote. Most work scheduled within the week.