Attached ADUs integrate new living space directly into your existing home's structure, often through a garage conversion or an addition. This approach maximizes your property's footprint while providing a fully independent dwelling unit.
A detached ADU from Mighty ADU Company provides a completely separate living space on your property, including its own foundation, framing, utilities, and finishes. This creates a distinct, private residence ideal for rental income, multi-generational living, or a dedicated home office.
Our garage conversion service transforms your existing garage into a fully functional living space, including structural modifications, utility extensions, and interior finishing. This creates valuable square footage for a new bedroom, home office, or rental unit, enhancing your property's utility and value.
ADU Permitting involves navigating Campbell's specific building codes and zoning ordinances to secure approval for your accessory dwelling unit project. We manage the entire submission process, ensuring your plans meet all regulatory requirements for a compliant build.
ADU design from Mighty ADU Company includes architectural plans, structural engineering, and utility schematics to ensure a buildable and code-compliant accessory dwelling unit. This detailed planning phase prevents costly changes during construction and optimizes your ADU's functionality and aesthetic integration.
ADU engineering involves the structural and civil design calculations necessary to ensure your accessory dwelling unit is safe, compliant, and buildable. This critical phase provides the detailed construction documents required for permitting and a sound foundation for your build.
Choosing Mighty ADU Company means partnering with a builder who genuinely understands the San Jose landscape. Our proximity to San Jose, just a short drive from Campbell, means we're on-site regularly, managing trades and ensuring project adherence to the highest standards. We're familiar with the specific permitting processes of the City of San Jose Planning Department, which streamlines approvals and keeps your project moving forward without unnecessary delays. This local insight allows us to anticipate challenges and apply solutions effectively, from site preparation to final inspection.
Our construction approach prioritizes structural integrity and energy efficiency. We don't just build; we engineer for longevity. This involves precise foundation work, often using reinforced concrete slabs with vapor barriers to manage moisture, especially critical in areas with varying soil conditions like those found near the Coyote Creek watershed. We specify high-performance insulation, such as closed-cell spray foam or rigid insulation, to achieve superior thermal envelopes, reducing energy consumption for heating and cooling. Every framing member is selected for straightness and dimensional stability, ensuring square corners and true walls, which makes for easier finish work and a more durable structure.
When you work with us, you can expect a methodical project execution that prioritizes clear communication and consistent progress. We provide detailed construction schedules, outlining key milestones and expected completion dates. Our project managers conduct regular site meetings to review progress, address any on-site conditions, and confirm material deliveries. We use robust project management software to track every detail, from subcontractor coordination to material procurement, ensuring that your ADU is built efficiently, to specifications, and with a focus on enduring quality.
San Jose homeowners can typically build an attached ADU up to 50% of the existing primary dwelling's floor area, or a detached ADU up to 1,200 square feet, whichever is less, subject to specific lot coverage and setback requirements. The City of San Jose's ADU ordinance generally allows for one detached ADU and one junior ADU (JADU) per single-family residential lot. We always verify the specific zoning for your property through the city's planning portal to ensure compliance with current regulations, as these can vary based on your parcel's zoning designation and specific overlays.
Building an ADU in San Jose typically takes between 6 to 12 months from initial design to final inspection, though this timeline can vary based on project complexity and city permitting review times. The design and permitting phase often takes 3-5 months, involving architectural drawings, structural engineering, and city plan check. Actual construction, from foundation pour to certificate of occupancy, usually spans 3-7 months. We streamline the permitting process by submitting complete, code-compliant plans, which helps minimize review cycles and keeps the project on schedule.
The most common foundation types for ADUs in San Jose are reinforced concrete slab-on-grade and, less frequently, raised perimeter foundations, depending on site conditions and design. Slab-on-grade foundations are popular due to their cost-effectiveness, quick installation, and inherent thermal mass, which can contribute to energy efficiency. For sites with significant slopes, expansive soils, or requiring crawl space access for utilities, a perimeter foundation with a crawl space might be specified. We conduct thorough geotechnical investigations to determine the optimal foundation design, ensuring long-term structural stability appropriate for San Jose's varied soil compositions.
Serving San Jose and surrounding communities. Fill out the form and we'll be in touch within 24 hours.