Looking for flexible ADU housing solutions? Whether it’s for family, rental income, or a private retreat, Millhawlk specializes in building high-quality ADU homes tailored to your needs.
An additional dwelling unit (ADU) is one of the smartest ways to maximize your property’s potential. We handle ADU construction from start to finish—delivering stylish, functional, and code-compliant spaces that enhance your lifestyle and investment.
Want an ADU but unsure about permits, design, or costs? We simplify the process with custom ADU plans, seamless construction, and expert guidance.
Building an Accessory Dwelling Unit (ADU) should be exciting, not overwhelming. At Millhawlk, we streamline every step—from initial sketches to final construction—ensuring a smooth, stress-free experience. Our proven process combines expert design, efficient permitting, and high-quality craftsmanship to deliver a functional, beautiful space tailored to your needs.
We start by understanding your vision, budget, and property layout. Our team creates custom ADU plans that maximize space, functionality, and aesthetics while complying with local regulations.
Navigating permits and zoning laws can be complex—but we handle it all. We submit precise plans, secure approvals, and ensure your project meets all requirements before breaking ground.
With permits in hand, our skilled builders bring your ADU home to life. We use high-quality materials, maintain clear communication, and keep the project on schedule and budget.
Once construction wraps up, we conduct a final walkthrough to ensure perfection. Then, it’s time to enjoy your new space—whether as a rental, guest suite, or private retreat!
We’ve answered the most common ADU questions to help you understand everything from construction timelines and financing to rental potential and zoning rules. Whether you’re planning a backyard cottage, garage conversion, or basement apartment, these FAQs will give you clarity and confidence as you explore your ADU project. Have a question we didn’t cover? Contact our team—we’re happy to help!
An Accessory Dwelling Unit (ADU) is a secondary housing unit on a single-family residential lot. These fully functional living spaces can be detached (like backyard cottages), attached (like basement apartments), or converted from existing structures (like garage conversions). ADUs include their own kitchen, bathroom, and sleeping areas, making them ideal for rental income, multi-generational living, or flexible workspace.
ADUs have become increasingly popular due to housing shortages and changing family needs. They offer property owners a smart way to maximize land use while adding value. Unlike traditional home additions, ADUs function as independent living spaces with separate entrances, utilities (in some cases), and address potential.
Yes, most jurisdictions allow ADU rentals, though some cities restrict short-term rentals (like Airbnb). Long-term ADU rentals are generally encouraged as affordable housing solutions. Many homeowners earn $1,500-$4,000 monthly depending on unit size, location, and amenities. We design ADUs specifically for rental success with durable materials, soundproofing, and efficient layouts.
Rental income often covers the ADU’s financing costs within 5-7 years, after which it becomes pure profit. We advise clients on optimal rental strategies, from lease agreements to utility setups. Some homeowners use property management companies, while others prefer direct management. Either way, ADUs consistently outperform most other real estate investments for cash flow.
Well-designed ADUs typically increase property values by 20-35% in most markets. The exact appreciation depends on location, ADU size/quality, and local housing demand. Appraisers value ADUs both as additional square footage and income-generating assets. In high-demand rental areas, the income potential can significantly boost your home’s market value.
Beyond monetary value, ADUs make properties more desirable to buyers seeking multi-generational living or investment opportunities. Our clients frequently report multiple competing offers when selling ADU-equipped homes. The combination of immediate rental income and long-term equity growth makes ADUs one of the smartest home improvement investments available today.
Garage conversions are among the most popular and cost-effective ADU options. Converting an existing 2-car garage typically costs 30-50% less than new construction ($100,000-$200,000 range). The enclosed structure already has a foundation, roof, and often proper electrical connections, significantly reducing construction time and materials.
However, garage ADUs still require full permitting, insulation upgrades, plumbing installation, and compliance with residential building codes. We assess your garage’s suitability during the consultation, checking for ceiling height, structural integrity, and utility access. Many clients appreciate how garage conversions maintain yard space while creating functional living areas.
Yes, ADUs require building permits and often additional approvals like zoning clearance, planning review, or environmental assessments. Permit requirements vary by city and property characteristics. Most jurisdictions now encourage ADUs through streamlined approval processes, but strict building codes still apply for safety and habitability.
Our team handles all permitting, including architectural drawings, engineering stamps, and municipal submissions. We’re familiar with local ADU ordinances and know how to navigate common hurdles like setback requirements, parking rules, and utility connections. Proper permitting ensures your ADU is legal, safe, and adds maximum value to your property.
ADU construction costs typically range between $150,000 to $400,000 depending on size, design complexity, location, and whether you’re converting existing space or building new. A basic 500 sq ft studio ADU might start around $180,000, while a 1,200 sq ft two-bedroom unit with high-end finishes could approach $350,000. Factors like site preparation, utility connections, and permit fees significantly impact the final price.
Many homeowners find ADUs more affordable than moving or building a traditional home addition. While costs vary, ADUs generally offer excellent ROI through rental income (typically $1,500-$3,500/month in most markets) and increased property values (15-30% appreciation). We provide detailed cost breakdowns during our free consultation to help you budget effectively.
Considering an Accessory Dwelling Unit (ADU) but have questions? You’re not alone! ADUs are a smart way to add space, value, and flexibility to your property—but the process involves important decisions about design, cost, permits, and more. Let Millhawlk Design & Construction guide you through every step—contact us today for a free consultation!
Millhawlk Design & Construction is Framingham’s Top, fully licensed and insured, Custom Home Builder. Whether you’re planning new construction, a home addition, or a remodel, our team is ready to bring your vision to life.
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