Foundation Repair

We’ve compiled several articles about foundation repair and similar services.

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Larkspur’s charming neighborhoods and picturesque location near the Bay bring unique foundation challenges for homeowners. Many homes are built on soft bay fill or alluvial soils, which are prone to settling over time. This soil movement can lead to foundation cracks, sloping floors, and structural instability, especially in older homes that lack modern construction techniques. Homes on sloped lots also face additional risks of soil erosion and hillside movement.

Seismic activity is a significant concern in Larkspur due to its proximity to the San Andreas and Rodgers Creek Faults. Earthquakes in the region can cause severe ground shaking, soil liquefaction, and lateral spreading, putting homes at risk of structural damage. Seismic retrofitting—such as foundation bolting, cripple wall bracing, and shear wall installation—is essential to reinforce homes and reduce the risk of damage during seismic events.

Drainage problems are also common in Larkspur, particularly in low-lying areas or homes with poor grading. Seasonal rains can lead to water pooling around foundations, increasing hydrostatic pressure and causing cracks or leaks. Installing effective drainage solutions, such as French drains, sump pumps, and retaining walls, helps manage water flow and protects Larkspur homes from moisture-related foundation issues.

Drainage Project Example

concrete repair, drainage, retaining wall, retaining walls

Drainage Project from our files: To correct drainage problem, we will dowel into the existing retaining wall located adjacent to the right rear corner of the building and form and pour a new 18 feet long concrete footing (which will also serve to support the existing...

Drainage System Installation Example

drainage, estimates, Foundation Repair, french drain, garage foundation, grading, retaining wall

Scope of Work We will construct a drainage system along the right, rear, and left sides of your home. The system will start on the right side adjacent the rear of the garage with a trench 2 feet deep. From here it will extend along the right side to the rear corner,...

Drainage Near Retaining Wall

drainage, estimates

Drainage Near Retaining Wall We will install approximately 120 lineal feet of surface drainage system around the pool in the areas marked by owner, and below the retaining wall. We will provide stub ups only, no drains or grates are included. We will expose...

Patio, Catch Basin, Drainage Example

catch basin, drainage, estimates, patio

We will remove and not replace a portion of the front flagstone patio, install a new 8 inch catch basin, and discharge the new drain through a 4 inch solid pipe across your front yard and through the existing pipe that penetrates the left side retaining wall. We will...

Foundation Replacement Example

driveway, estimates, Foundation Repair

1. Construct approximately 88 lineal feet of concrete foundation with 2x6 pressure treated sills and 5/8 inch anchor bolts, (Stab bolts for holdowns to be supplied and placed by others). Access door to be constructed and installed by others. 2. Construct seven 2 feet...

Basement drainage repair example

drainage, estimates

We will construct a drainage system around the lower basement area. The system will be constructed in 2 legs, starting on either side of the basement entry stairs, and discharging into a sump located on the right side of the house, (3 sides of this system will be...

Garage Foundation and Drainage Example

drainage, estimates, excavation, Foundation Repair, french drain, garage foundation

On the garage we will do the following work: 1. Slope trenches and lay 140 lineal feet of 4 inch perforated pipe in previously excavated areas surrounding new foundation walls. The pipe to tie into new discharge pipe installed by Alderson Construction. 2. ...

Spa installation example

Foundation Repair

On the new spa we will do the following work: 1. Tune and lay approximately 100 lineal feet of 4 inch perforated pipe in previously excavated areas surrounding new foundation/retaining walls. The pipe to connect to the existing 6 inch discharge pipe. The portion on...

Drainage, Underpinning Example

drainage, Foundation Repair, underpinning

We will construct a drainage system along the rear and right sides of your home. The system will start at the left rear corner with a trench 4 feet deep. From here it will extend along the rear to the right corner, then continue along the right side to the front...

Home Drainage System

drainage, estimates, french drain, underpinning

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