Service and Service Area:

Core Emphasis in Structural Concrete

  • Residential foundations
  • Drilled piers
  • Retaining walls
  • Shotcrete Walls, Finished/Unfinished  
  • Grade beams, spread footings
  • Slabs on grade, Mat Slabs, False work slabs, Pan deck slabs

Commercial foundations

  • Drilled piers
  • Retaining walls
  • Grade beams, spread footings
  • Slabs on grade, Mat Slabs, False work slabs, Pan deck slabs
  • Concrete columns

Site concrete

  • Drilled piers
  • Retaining walls (including board formed finishes)
  • Seat Walls
  • Grade beams, spread footings
  • Abutments, Generator Pads, Storm retention basins


  • Concrete Patios
  • Concrete stairs
  • Pool decks and coping
  • Concrete curbs and gutter pans
  • Driveways and aprons
  • Concrete swales
  • All ADA concrete
    • Landings
    • Sidewalks 
    • Ramps
    • Truncated domes 
  • Grooving for traction control on steep
  •  concrete grades
  • Architectural Finishes
    • Integrated Color
    • Acid etching
    • Topcast
    • Salt finish
    • Sand blasting
    • Seeded and washed mixes
    • Broomed
    • Stamping
    • Sawcut joints

Ancillary Services

  • Drainage
    • Drain mats – Mira drain
    • Perforated wall drains
    • Tight line for downspouts
    • Civil drainage – Pipe, DI’s, dissipaters,  rock outfalls etc.
    • Concrete swales
    • Graded swales
    • Erosion control
  • Waterproofing
    • Integral in mix (xypex)
    • Surface Applied Membrane (Paraseal LG)
  • Excavation / Grading
    • Mass Excavation
    • Pad Grading and compaction
    • Footing excavation
    • Utility trenching and backfill
    • Dirt spoils off haul
    • Erosion Control
    • Clear and Grub
    • Soil Shoring
      • Permeation grouting
      • Soil nails
      • Tiebacks
      • Shotcrete
      • Lagging Walls
  • Demolition
    • Concrete breakout and removal
    • Existing structure removal
    • Off Haul Rubble

Service Area

We have an excellent fleet of trucks, drill rigs, tractors, concrete pumps, excavators, and steel fabrication equipment to deliver flexible onsite service to our customers.

Our flatwork crews are proficient at a variety of finishes including, colored and or textured surfaces of driveways, walkways, porches, steps, landings and more.

We proudly serve a 50 mile radius including but not limited to:  Marin, Sonoma, Napa, and Lake Counties as well as San Francisco, Oakland, Richmond, and Berkeley.

Our Commitment to Safety

The dangers in this industry are real and at Marr B. Olsen Inc. injury prevention is our highest priority. We are committed to providing every team member with a safe and healthy work environment. To meet our objective we work with EEAP: The Safety People and the program Got Safety which provide all of the tools we need for weekly safety meetings and logs as well as routine unannounced jobsite safety inspections. Our team members must work together toward the common goal of eliminating all jobsite hazards and injuries.