Need underpinning to permanently stabilize home or level floors? Call 415-457-5658 for a prompt, reliable estimate from our experienced estimator. RWR has been installing underpinning in San Francisco for over 24 years. You will see our trucks and equipment working in San Francisco neighborhoods like the Marina, Pacific Heights, Nob Hill, Western Addition, Haight, Castro, Noe Valley, Twin Peaks and so on.

Here’s the kind of detailed estimate you can rely on, to correct foundation problems and perform structural work, including even zero lot line jobs that require our expertise:

This estimate is for mere reference and illustration only, based on Structural Shoring skims used in the past by contractor in similar job site situations/conditions and is subject to the revision and stamped approval of a Structural shoring engineer (Allowance has been provided below). Our price includes all labor and material to complete the work as per the itemized “Scope of Work” below.

Scope of Work
• Mobilize all necessary equipment and manpower to jobsite.
• Confirm Layout with General Contractor (Layout by General Contractor).
• Operations’ safety and on site supervision.
• Clean up related construction debris, staged materials and demobilize equipment.

Underpinning Excavation
• Excavate and dispose of soil in sequence for three new underpinning piers (two at 4.5ft long by 5 ft. deep by 2.5 ft wide maximum and one at 4.5 ft. long by 4 ft. deep by 2.5 ft wide maximum)
• All soil to be off-hauled from site.

Underpinning Reinforced Concrete
• In sequence place reinforcing steel, form and pour concrete for three new underpinning piers (two at 4.5ft long by 5 ft. deep by 2.5 ft wide maximum and one at 4.5 ft. long by 4 ft. deep by 2.5 ft wide maximum) as per plans.
• Preload and Drypack (if necessary or called by the engineer).

Unit Prices
• Additional Underpinning Haunch Installation Depth – add cost per ft. depth

Exclusions
• Cost of plans, permits, bonds, testing and inspections.
• Increased cost of drilling and excavation due to hard rock, underground water or caving soils. (Hard rock drilling is defined as a penetration rate slower than 1 ft. in 5 minutes or the use of a core barrel.) (See Attached drilling conditions) (Hard rock excavation is defined as material that cannot be excavated with a standard backhoe or excavator bucket, or if excavating by hand, material that cannot be excavated without a pneumatically powered jackhammer.)
• Any work on utilities including buried pipes.
• Layout of hubs and elevations.
• Carpentry/woodwork.
• Repair/replacement of damaged landscaping or hardscaping including and not limited to concrete sidewalks and asphalt street paving.