Mighty ADU Company specializes in Accessory Dwelling Unit construction and proudly serves Hillsboro, Oregon, providing expert ADU contractor services. Hillsboro, known for its thriving tech industry and family-friendly neighborhoods like Orenco Station, presents unique opportunities for homeowners to maximize their property's potential. We understand the specific zoning codes and permitting processes relevant to Washington County, ensuring your project progresses smoothly from concept to completion. Our focus is on delivering functional, durable ADUs that enhance property value and meet the diverse needs of Hillsboro residents.
Get a Free Quote in HillsboroAn attached ADU is a secondary dwelling unit built directly onto your existing Portland home, sharing at least one common wall. This option allows for efficient use of existing infrastructure and can often simplify permitting compared to detached structures.
A detached ADU is a standalone structure on your property, separate from the main house, offering independent living space. This option provides maximum privacy and design flexibility, creating a distinct new dwelling.
A garage conversion transforms an existing garage structure into a fully functional, habitable living space, often including plumbing, electrical, and insulation upgrades. This process unlocks significant property value and provides flexible living options without expanding your home's footprint.
We manage the entire ADU permitting process in Portland, from initial application submission to final permit issuance. This ensures your project complies with all local zoning and building codes, avoiding costly delays.
ADU Design involves creating detailed architectural plans, structural drawings, and material specifications for your Accessory Dwelling Unit. This comprehensive design package ensures your ADU is code-compliant, functional, and aesthetically integrated with your existing property.
ADU engineering provides the structural and civil calculations needed for your Accessory Dwelling Unit's foundation, framing, and utility connections. This ensures your ADU is built safely, to code, and withstands Portland's specific environmental conditions.
Choosing Mighty ADU Company for your Hillsboro ADU project means partnering with a builder who understands the local landscape. We are familiar with Hillsboro's specific development standards, including setback requirements and impervious surface limitations, which can vary even within different zones like R-1 or R-5. This local insight helps us design and build ADUs that comply with all regulations from the outset, avoiding costly delays and redesigns. Our proximity allows for efficient site visits and responsive project management, because we're not navigating long commutes to serve you.
Our construction approach prioritizes long-term performance and energy efficiency, which is crucial in the Pacific Northwest climate. For instance, we often specify advanced framing techniques and use high-performance insulation like closed-cell spray foam or mineral wool, achieving R-values that often exceed standard code requirements. We also pay close attention to moisture management details, such as continuous exterior insulation and properly flashed window and door openings, preventing common issues like water intrusion and mold growth. This level of detail ensures your ADU is built to last and provides comfort year-round.
When you work with us, expect a structured process that keeps you informed and involved. We begin with a detailed site assessment and feasibility study, then move into comprehensive design and permitting assistance. During construction, we maintain a clean and organized job site, minimizing disruption to your property and neighbors. Our project managers provide regular updates, explaining each phase of construction and addressing any questions you may have, because clear communication is fundamental to a successful build. We aim for a predictable, high-quality outcome, delivering an ADU that meets your specific needs and stands as a valuable asset to your Hillsboro home.
Hillsboro homeowners can build an ADU up to 800 square feet or 75% of the primary dwelling's living area, whichever is smaller, according to Hillsboro Planning Department regulations. This maximum size applies to the interior habitable space, not including garages or unheated storage. There are also specific height restrictions, typically limiting ADUs to one story or a maximum of 25 feet if two stories, depending on the zoning district. Understanding these limits early in the design phase is crucial for a compliant and approvable project.
No, Hillsboro homeowners are generally not required to have separate utility connections for an ADU; they can share utility services with the primary dwelling. This means the ADU can connect to the existing water, sewer, and electrical services of the main house, which can significantly reduce infrastructure costs. However, it is common practice to install separate sub-meters for electricity and water within the ADU, allowing for easier tracking of usage or potential tenant billing. We always verify specific utility requirements with the City of Hillsboro during the planning phase.
A typical ADU project in Hillsboro, from initial design to final construction and occupancy, generally takes between 10 to 18 months. The design and permitting phase can often consume 4 to 8 months, influenced by the complexity of the design and the Hillsboro Planning Department's review times. Once permits are secured, the actual construction phase typically lasts 6 to 10 months, depending on factors like weather, material availability, and the ADU's size and features. We work to streamline each step, ensuring efficient progress while maintaining quality.
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