Custom Home & Room Additions

Providing home expansion & ADU construction in the South Bay & Peninsula

Home Addition & ADU Contractor

At Pascacio General Construction, we design and build thoughtfully planned new spaces that seamlessly expand and enhance your home. Specializing in room additions, home expansions, and ADU construction, each project is carefully developed to maximize livability, architectural continuity, and long-term value — pairing quality structural work with refined finishes and cohesive design.

We focus on durable materials, efficient layouts, and smart building solutions that integrate naturally with your existing home. From initial planning and permitting through final construction, our team delivers a streamlined, detail-driven experience — creating new spaces that feel intentional, well-crafted, and built to perform beautifully for years to come.

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Contact Pascacio Construction to discuss your home expansion or ADU construction project 

Construction Services

Accessory Dwelling Unit (ADU) Construction

ADUs provide flexible living space while adding long-term value to your property. We design and build fully independent units with efficient layouts, modern systems, and cohesive architectural integration. From foundation to final finishes, each ADU is constructed for durability, comfort, and seamless connection to the primary residence.

Attached and Detached ADU Builds

Whether integrated into the existing structure or built as a standalone unit, attached and detached ADUs are carefully planned for privacy, efficiency, and structural integrity. We coordinate layout, utilities, and exterior detailing to ensure the new space complements your home while functioning independently and efficiently.

Bathroom Additions

Adding a bathroom improves convenience and overall livability. We design and construct fully integrated bathroom additions with thoughtful layouts, quality fixtures, and efficient plumbing systems. Each space is built to balance performance, comfort, and clean, modern design.

Bonus Room Construction

Bonus rooms create flexible space for entertainment, work, or relaxation. We construct well-integrated additions that align with your home’s structure and style. Careful framing, insulation, and finishing ensure the new room feels original to the home while enhancing everyday functionality.

Garage Conversions to ADUs

Garage conversions maximize underutilized space without expanding your footprint. We transform existing structures into fully functional living areas with upgraded foundations, insulation, utilities, and modern finishes. Each conversion is carefully engineered to meet code requirements and long-term performance standards.

Home Expansions and Footprint Extensions

Expanding your home outward creates new opportunities for improved layout and flow. We extend foundations, framing, and roofing systems to create seamless transitions between existing and new construction. Each expansion is designed to enhance space, natural light, and overall architectural balance.

Home Office Additions

Dedicated office space supports productivity and privacy. We design and construct home office additions with thoughtful sound control, integrated lighting, and modern electrical infrastructure. The result is a focused, comfortable workspace tailored to today’s evolving work environments.

In-Law Suites and Guest Houses

In-law suites and guest houses provide independent, comfortable accommodations for extended family or visitors. We build these spaces with private entrances, efficient layouts, and cohesive design elements that integrate naturally with your property while offering autonomy and privacy.

Junior ADU (JADU) Construction

Junior ADUs maximize interior space within the existing home. We reconfigure layouts and upgrade systems to create compact, fully functional living areas that meet local code requirements. Each JADU is designed for efficiency, comfort, and seamless architectural integration.

Kitchen Expansions

Expanding a kitchen enhances both flow and usability. We extend structural framing and utilities to create larger, more functional layouts that support modern appliances and improved circulation. Each expansion is executed with attention to proportion, performance, and cohesive design.

Mudroom Additions

Mudrooms create a practical transition between exterior and interior spaces. We construct organized entry areas with durable materials, integrated storage, and thoughtful layout planning. These additions improve daily functionality while maintaining clean architectural lines.

Primary Suite Additions

Primary suite additions create private, retreat-like environments within the home. We design and build expanded bedrooms with integrated bathrooms, walk-in closets, and refined detailing. Each suite is constructed for comfort, efficiency, and long-term value.

Room Additions (Bedrooms, Family Rooms, Offices, etc.)

Room additions provide tailored space for evolving needs. We carefully integrate new framing, roofing, and utility systems to ensure structural continuity and seamless design. The result is a well-balanced extension that enhances both functionality and overall home flow.

Second-Story Additions

Building upward maximizes living space without reducing lot area. We engineer and construct second-story additions with structural reinforcement, precise framing, and cohesive exterior integration. Each project is carefully planned to maintain stability while creating substantial new square footage.

Sunroom Additions

Sunrooms introduce natural light and connection to the outdoors. We construct insulated, well-integrated spaces designed to capture daylight while maintaining energy efficiency. Thoughtful window placement and structural detailing ensure a bright, comfortable addition that complements the home year-round.

Deanna E.

Thousand Oaks, CA

We hired Mauri and Pascacio General Construction to replace our roof that definitely needed replacement. Mauri came out the next day to assess the job which was great considering it was a rainy week and we had a leak. He gave us an estimate that same day and they were able to permit and do the job within 2 weeks. He is super responsive and dependable. His team showed up to work when they said they would. Seemed like a very hardworking crew.

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Areas we serve

South Bay

Peninsula