Homes with in law suites — Hillsboro, OR
Last updated: September 24, 2026
What affects the price
Building an ADU is a custom project, so costs vary based on your specific choices. Site conditions are the biggest factor; if your land requires significant grading, utility extensions, or foundation work, those expenses add up quickly. Choosing high-end finishes, custom cabinetry, or complex roof lines will also push the budget higher compared to a standard design. Prefabricated units often offer predictable costs, while custom site-built structures allow for more flexibility but can be harder to estimate upfront. Exact pricing confirmed free on the call.
About this service
Homes with in-law suites are properties designed to house extended family members comfortably while maintaining privacy. You might look into this if you are caring for aging relatives or need a space for guests that stays separate from the main living area. The cost typically depends on whether you are converting an existing room or building a new addition. Exact pricing confirmed free on the call.
Frequently asked in Hillsboro
What are accessory dwelling units (ADUs) in Hillsboro?
Accessory dwelling units (ADUs) in Hillsboro, Oregon, are secondary housing units located on a single-family residential lot. They provide independent living quarters, complete with their own kitchen, bathroom, and sleeping area, and can be attached to or detached from the primary residence. ADUs are intended to be fully habitable living spaces and are subject to local zoning and building codes. We can provide expert consultation on building one.
What is involved in ADU construction in Hillsboro?
What is the cost of an accessory dwelling unit in Hillsboro?
Are there accessory dwelling unit financing options in Oregon?
Accessory dwelling unit financing options in Oregon may include traditional home equity loans, home equity lines of credit (HELOCs), or specific construction loans. Some financial institutions may offer programs tailored for ADU construction. It is recommended to consult with lenders who are familiar with ADU projects to explore the most suitable financing solutions for your needs. We can provide a quote that can assist in this process.
What are the requirements for an accessory dwelling unit contractor in Hillsboro?
An accessory dwelling unit contractor working in Hillsboro, Oregon, must hold the appropriate state licenses and carry current liability and workers' compensation insurance. They should be knowledgeable about Oregon's building codes and Hillsboro's specific zoning regulations for ADUs. A reputable contractor will provide detailed proposals and project timelines. We can help you find qualified professionals.
What is a detached accessory dwelling unit in Hillsboro?
A detached accessory dwelling unit (ADU) in Hillsboro, Oregon, is a standalone residential structure situated on the same property as the primary single-family home. These units are fully independent, featuring their own entrance, kitchen, bathroom, and sleeping areas, and are separate from the main dwelling. They are a popular choice for rental income or accommodating family members. We can discuss the feasibility of detached ADUs on your property.
What is accessory dwelling unit Massachusetts?
Accessory dwelling unit Massachusetts refers to the specific regulations and construction practices for ADUs within the state of Massachusetts. Since our focus is on Hillsboro, Oregon, Massachusetts' laws are not directly applicable. However, the fundamental principles of ADU construction, including zoning, permitting, and building codes, are generally consistent across the United States, with local variations being the most significant factor. We are experts in Hillsboro's regulations.
Also serving nearby: Beaverton · Portland · Vancouver · Gresham · Salem
More on this: HUD ADU resources — ADU policy and financing research.
Service area details
Serving all of Hillsboro — population 107,730; about 4,168 residents per square mile across 25.8 sq mi. ZIP codes covered include 97123, 97124, 97129.
Neighborhoods served in Hillsboro: Rosedale, Edelweiss, The Reserve, North Hillsboro, South Hillsboro — and every surrounding area.
Areas we serve
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