Lussoro Design + Build
San Mateo Design-Build Contractor

Home Additions in San Mateo

Lussoro manages home additions for San Mateo families who need more space without sacrificing the character and value of the existing home.

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Built for San Mateo homes

Every project starts with the real constraints of the home: layout, structure, utilities, permitting, access, finish level, and how your household needs to live during construction.

  • Bedroom, family room, primary suite, and second-story additions
  • Structural, foundation, roofline, and exterior tie-in coordination
  • Design-build planning to align layout, budget, and constructability
  • Permitting, inspections, trade scheduling, and site logistics
  • Interior and exterior finishes that blend with the original home

Related services

Kitchen RemodelsBathroom RemodelsAdditions & ADUsWhole-Home Renovations

Service area

Based in San Mateo, Lussoro serves homeowners across San Mateo County, the Peninsula, San Francisco, San Jose, and surrounding Bay Area communities.

See our San Mateo service page

Questions homeowners ask

What makes additions complex?

Additions involve structure, foundations, rooflines, waterproofing, utilities, and finish matching. Early planning prevents expensive redesigns later.

Can Lussoro help decide between an ADU and addition?

Yes. We can compare privacy, cost, access, permitting, resale, and long-term use before you choose a direction.

Do additions require permits?

Yes. Additions require permits and inspections. The exact path depends on scope, site constraints, and jurisdiction requirements.