Call Now
Website
Call
Business Details
33 Years
experience
Expert Residential Construction & Remodeling in Southern California
Masami Builders has been a trusted residential construction contractor in Southern California for over 25 years. Our family-owned business prioritizes transparency, cost efficiency, and personalized service, treating every client like an extension of our own family. We specialize in room additions, bathroom and kitchen remodeling, and ADU projects, serving communities across Los Angeles, San Gabriel, Pasadena, and beyond.

Our team combines decades of hands-on experience with meticulous project management to deliver high-quality results on schedule. We pride ourselves on clear communication, using premium materials, and maintaining a crystal-clear workflow from project initiation to completion. Our mission is to transform homes while ensuring every client feels valued and supported throughout the construction process.
Services
Room Additions Bathroom Additions Kitchen Remodeling ADU Permits Assistance Roofing & Water Damage Repair
Details
  • Year established: 1993
Highlights and features
  • We have over 25 years of experience in Southern California residential construction
  • Our family-owned business provides personalized, one-on-one client care
  • We specialize in cost-efficient, transparent project management
  • We serve 15+ communities including Los Angeles, Pasadena, and San Gabriel
  • Our team guarantees timely completion with premium quality materials
What people say
Incredibly helpful Professional walk through Experts at repairing Highly recommend Executed all work excellently
Services
Room Additions
We create custom room additions to accommodate growing families or rental opportunities. Our team handles structural design, permitting, and full construction while maintaining your home's aesthetic integrity. Clients benefit from dedicated project management ensuring seamless integration with existing spaces.
Kitchen Remodeling
Our kitchen specialists deliver complete renovations from cabinet refacing to full layout redesigns. We guide clients through material selections while guaranteeing no hidden costs. With 25+ years of local experience, we optimize functionality and increase home value through modern design implementations.
Bathroom Additions
We construct new bathrooms tailored to household needs, including guest facilities and accessibility upgrades. Our process includes plumbing coordination, tile selection assistance, and ADA-compliant options. Clients receive expert guidance to maximize both comfort and property value.
ADU Assistance
We specialize in ADU development from initial concept through final inspection. Our services include zoning analysis, permit acquisition, and cost-effective construction solutions. This service helps homeowners create rental income streams or multigenerational living spaces within budget constraints.
Roofing & Water Damage Repair
We provide emergency roof repairs and water damage restoration services. Our team addresses structural issues while preventing future leaks. Services include shingle replacement, flashing repair, and attic ventilation improvements to protect homes against California's weather extremes.
Questions
What residential construction services do you offer?
We specialize in room additions, kitchen and bathroom remodeling, ADU construction, and roof/water damage repairs across Southern California.
How long have you been in business?
Masami Builders has served Southern California homeowners since 1993 with over 25 years of residential construction experience.
Which areas do you service?
We operate throughout Los Angeles County including Pasadena, San Gabriel, Alhambra, and all surrounding communities.
Do you assist with ADU permits?
Yes, we provide complete ADU permitting assistance including zoning analysis and regulatory compliance documentation.