Need underpinning to permanently stabilize home or level floors in Berkeley? Call 415-457-5658 for a prompt, reliable estimate from our experienced estimator. RWR has been installing underpinning in Berkeley for over 24 years. You will see our trucks and equipment working in Berkeley, Berkeley Hills, and Kensington.

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 based on drawings. The scope of work includes excavation for grade beam, drilling, concrete piers and installing concrete wall. The price includes all labor and material to complete the work as per the itemized scope of work below.

Scope of Work

Mobilization and Layout
• Mobilize to jobsite with portable drilling rigs and other necessary equipment to complete job (See notes below).
• Daily Cleanup
• Final Cleanup

Piers
• Drill twelve (12) 18” diameter x 10 ft maximum pier holes as shown on plans and specifications S1. See drilling conditions. Final depths to be determined by soils engineer.
• Install twelve (12) steel cages x 10 ft and place concrete in holes per plans and specifications S2.
• No Off haul of pier spoils.

Concrete Wall and Grade Beam
• Excavate for new concrete grade beam per plans and specifications S1.
• No Off haul of spoils from site
• Install 410 sq. ft of new pour in place concrete reinforced retaining wall per plans and specifications S1.
Drainage and Demo
• Demo existing wood wall and off haul debris from site.
• Install 4” SDR 35 perforated drain pipe behind new wall per plans and specifications. Note: no final exit for drainage provided.
• Backfill behind wall approximately 1 ft back ¾ drain rock approximately 1 to 2 ft from top of new wall.
• Final backfill to be completed by others.
• Note: final drainage exit to be completed by others
Qualifications and Clarifications
• Job is bid as package.
• Includes one mobilization only.
• Prices are subject to adequate supply of wood, steel, rock, concrete, and asphalt, PVC resins, PVC pipe, fittings at prices quoted at bid time and are good for 30 days.
• Proposal is based on working std 40 hours per week, 5 work days and mutually agreeable schedules.
• Progress payments every two weeks. No retention.
• General Contractor to arrange for all encroachment permits to permit pour from street. Price includes cost for traffic control for a maximum of three pours.
Exclusions
• Cost of plans, permits, bonds, testing and inspections.
• Any additional work due to utilities including buried pipes or irrigation pipes unless noted.
• Increased costs of excavation or drilling due to hard rock, caving or underground water. (Hard rock excavation is defined as material that requires the use of pneumatically or hydraulically operated hammers or rams to excavate.) (Hard rock drilling is defined as a penetration rate slower than 1 ft. in 5 minutes).
• Replacement of damaged landscaping, driveway or fence.
• Excavation and off hauling of hazardous materials, underground tanks, or materials unacceptable at dumps.
• Any work related to landscaping, fences or gates except as outlined
• Survey of property lines
• Landscaping or irrigation
• Demo of concrete in excess of 12 inches.
• Electrical or plumbing
• Off haul of spoils
• Importation of fill except for drain rock