Is Foremost Building Solutions licensed and insured?

Yes. Foremost Building Solutions LLC is a licensed California General Building Contractor (CSLB #1133184), bonded and insured. You can verify our license anytime on the CSLB website.

Do you handle permits and inspections?

Yes. We pull all required permits and coordinate every inspection with the City of San Diego, the County, or your local city (Santee, El Cajon, La Mesa and others) through final sign-off, so your project is fully legal and documented.

What areas do you serve?

We're based in Santee and serve East County and all of San Diego County, including El Cajon, La Mesa, Lakeside, Spring Valley, Alpine, Poway, Scripps Ranch, Del Cerro, San Carlos, Tierrasanta, Mission Valley, North Park, Clairemont, La Jolla and the City of San Diego.

Do you build ADUs and garage conversions?

Yes. We build detached ADUs, attached ADUs and garage conversions from permits through final inspection, including framing, electrical, plumbing, insulation and finishes. We can build from your architect's plans or coordinate the design and engineering for you.

Do you take on commercial projects?

Yes. We handle commercial tenant improvements, roofing, stucco and exterior restoration, and ongoing maintenance for churches, offices, retail spaces and property managers, including multi-phase work for repeat clients.

Are estimates free? Do you offer construction consulting?

Yes. Estimates for remodels, ADUs, additions, roofing and commercial work are free. We also offer paid construction consulting if you want an experienced general contractor to review plans, bids or a project in progress before you commit.

Who will be on my job site?

Owner Oliver Erbes manages every project personally. Specialty trades are performed by licensed, insured subcontractors working under written subcontracts and our direct supervision, so you always have one point of contact.

Do you do small repairs or handyman jobs?

Our focus is complete projects: kitchen and bathroom remodels, ADUs, room additions, roof replacements, stucco and siding, and commercial construction. For small repairs we may be able to refer you to a trusted local tradesperson.

San Diego Remodeling & Construction Services

Foremost Building Solutions delivers high-quality remodeling, ADUs, and construction projects across San Diego County. Built with precision, managed professionally, and designed to last.

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Call (619) 840-4712

Core Services

Open-concept living room and kitchen with white walls, wooden floors, and large sliding glass door leading to outdoor patio. Features a white sofa with pillows, wooden coffee table, black brick fireplace, and open kitchen with white cabinets, wooden shelves, stainless steel appliances, island with barstools, and pendant lighting.

Home Remodeling

Full interior and exterior renovations, from single-room upgrades to full-home transformations.

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Outside view of a modern backyard shed with a large open sliding glass door revealing a cozy living space inside, including a sofa, coffee table, and a small kitchen area. The shed is surrounded by desert landscaping with various plants, palm trees, and a wooden deck leading into the interior.

ADU Construction

Detached ADUs, garage conversions and room additions—permits, engineering and construction handled start to finish to maximize space and property value.

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