Home additions & ADUs
San Marino Residential Construction · CSLB #1124114
General Contractor in San Marino, CA
High-quality residential construction for San Marino homeowners planning a carefully detailed remodel, home addition, ADU or new living space.
A complete construction scope
Thoughtful construction for homes where details and existing character matter.
A substantial San Marino project should begin with the existing home—not with a generic package. Structure, proportions, exterior transitions, mature site conditions, interior details and the approved documents all affect how new work should be planned and built.
Matamoros Construction Inc. organizes the contracted work around a written scope, qualified trade coordination and clear owner decisions. We review the property and available documents before finalizing assumptions, allowances, exclusions and the field sequence.
Matamoros Construction Inc. is based in Moreno Valley and serves San Marino projects by appointment. We do not claim a separate office or projects completed in San Marino unless specifically documented.
ADUs & remodeling
High-quality remodeling, additions and ADU construction.
Representative imagery illustrates the available services without suggesting that the pictured homes are Matamoros Construction Inc. projects.
Interior remodeling
Finish quality supported by disciplined preparation
Whole-home, kitchen and bathroom remodeling coordinates concealed systems and substrates before cabinetry, tile, lighting and final details.Explore this service →Construction images shown are representative examples used to illustrate the construction process and may not depict projects completed by Matamoros Construction Inc.
Typical project scope
Define the home, approvals and finish expectations early.
Final work is based on existing conditions, approved plans when applicable, and your written construction agreement.
Property & Existing Home
Review the San Marino address, desired changes, current conditions, architectural context, photographs and available plans.
Design & Constructability
Identify structural, utility, access and finish decisions that affect the proposed construction approach.
Written Scope
Document contracted labor, materials, selections, allowances, exclusions, owner responsibilities and trade coordination.
Planning & Building Review
Confirm applicable planning, building, design-review or historic-property requirements before work begins.
Careful Construction
Coordinate protection, demolition, structure, rough systems and finish trades around the approved documents.
Inspection & Closeout
Address required inspections, contracted corrections, final details, cleanup and the owner walkthrough.
Projects we can evaluate
Residential construction suited to a carefully defined scope.
Our best work begins with clear priorities, complete information and a finish standard that is understood before crews and materials arrive.
Whole-Home Remodeling
Multi-room changes coordinated from structural and rough work through millwork, cabinetry, flooring, paint and final details.
Home & Room Additions
Expanded living areas connected carefully to the existing foundation, roof, exterior envelope and interior circulation.
Kitchen Remodeling
Layout, cabinetry, appliances, plumbing, electrical, lighting, surfaces and flooring organized as one renovation.
Bathroom Remodeling
Plumbing, waterproofing, ventilation, tile, glass, cabinetry and fixtures coordinated from preparation through finish.
ADUs & Garage Conversions
Independent or converted living space developed around the property, approved plans, utilities and inspection sequence.
New Residential Construction
Plan-based construction managed from site preparation and structure through building systems and detailed finishes.
Primary service area
San Marino, California
San Marino’s current code provides a specific ADU process and standards for properties designated as historic resources or located in a historic district. The City requires Planning and Building review to be coordinated with the building-permit application when applicable.
Selected project work
Real craftsmanship from active and completed Matamoros projects.
These photographs show Matamoros Construction Inc. work in other communities and are not presented as San Marino projects.
Custom finish work coordinated around the existing staircase and interior architecture.
Cabinetry, surfaces, fixtures and lighting aligned as one finish package.
Waterproofing and tile preparation supporting clean finished details.
San Marino planning and building
Confirm design and permit requirements before construction commitments.
San Marino’s municipal code states that ADU applications subject to its process are submitted to Planning and Building with the building-permit application. Projects that do not follow objective standards may require a different review path, and separate requirements can apply to historic resources.
- Property, zoning and historic-resource status confirmation
- Planning, building and design-review responsibilities when applicable
- Existing-home protection and new-to-existing transition details
- Required foundation, framing, rough-system and final inspection planning
Common questions
What homeowners ask before starting.
Does Matamoros Construction Inc. serve San Marino?
Yes. We evaluate substantial residential remodeling and construction projects in San Marino. We are based in Moreno Valley and do not claim a separate San Marino office.
What types of San Marino projects are the best fit?
Whole-home remodeling, home additions, kitchen and bathroom renovations, ADUs, garage conversions and new residential construction are appropriate when the scope, plans and finish expectations are clearly defined.
Can you build an ADU in San Marino?
Yes. We can review the property, proposed use, existing conditions and plans, then define the construction scope from approved documents. Planning, building and historic-resource requirements must be confirmed for the specific property.
How do you protect the existing home during remodeling?
Protection, access, demolition limits, occupied areas and existing-to-new transitions are identified during preconstruction and included in the field sequence appropriate to the contracted scope.
What should I provide for a consultation?
Send the San Marino property address, project goals, current photos, available plans, desired finishes and preferred timing through the estimate form.
Official local information
Verify requirements with the reviewing city.
Municipal rules and forms can change. These official resources are a useful starting point before plans, pricing or construction decisions are finalized.
Ready to discuss the work?
Bring us your idea, photos or approved plans.
We will review the project information and determine the right next step for an accurate proposal.