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Washington ADU Contractors
Expanding your home by building an ADU is a fantastic way to enhance your living space, improve functionality, and increase the value of your property. Where property values are high and space can be at a premium, home additions can be an excellent investment. Our comprehensive home addition services ensure a seamless and stress-free process, delivering exceptional results that transform your home.
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How We Can Enhance Your Property?
Enhanced Aesthetics
Transform your space with custom design and high-quality materials, elevating the overall look of your property and boosting its curb appeal.
Boosted Property Value
Invest in strategic upgrades and renovations that enhance both the interior and exterior, increasing your property’s market value and attractiveness to potential buyers.
Energy Efficiency
Implement energy-saving solutions like updated windows and insulation, reducing utility costs and creating a more sustainable, eco-friendly living environment.
Modern Amenities
Upgrade to the latest technologies and amenities, ensuring your property remains competitive and appealing with contemporary features and conveniences for enhanced comfort.
Why Choose Bayside Home Improvement?
10 years of construction expertise ensure efficient, high-quality results tailored to your needs.
Our skilled craftsmen use top materials and techniques for lasting, superior results.
We offer personalized services, tailoring every project to meet your specific vision and requirements.
Fully licensed, insured, and committed to delivering consistent, dependable service on every project.
Starting Steps for a Successful Renovation
Begin your renovation with clear goals, a solid budget, and expert planning.
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Frequently Asked Questions
What exactly is an ADU?
An Accessory Dwelling Unit (ADU) is a smaller, independent residential unit located on the same property as a single-family home. Also known as granny flats, in-law suites, or secondary dwelling units, ADUs include all the essential living facilities – kitchen, bathroom, sleeping area – and have a separate entrance from the main house. They can be attached to your home, converted from existing structures like garages, or built as completely separate detached units.
How long does a home addition project typically take?
ADU costs vary significantly based on size, location, and construction type. A standard 2-car garage conversion typically costs $120,000-$140,000, while new construction ADUs usually range $300-450 per square foot. Most ADUs range from 400 to 800 square feet, resulting in estimated costs of $85,000 to $185,000 for construction only. Additional expenses include architectural design ($10,000-$25,000), permits, and site preparation. We provide detailed cost estimates during our initial consultation to help you plan your budget effectively.
How long does the ADU construction process take?
The timeline depends on the type of ADU you’re building. Garage conversions typically take 2-3 months, while building a new ADU might take 5-6 months depending on size. The entire process from initial planning to completion usually takes 12-18 months, including design, permitting, and construction phases. We recommend planning for 18 months for a custom ADU project and around a year if starting from a pre-designed plan.
Do I need special permits to build an ADU?
Yes, ADUs require building permits just like any other residential construction. It typically takes 20 business days to go through the first round of building review unless your plan needs additional review. We handle the entire permitting process for you, including plan submissions, building department coordination, and ensuring compliance with local zoning requirements. Our expertise helps avoid common delays and ensures your project meets all regulatory standards.
Can I rent out my ADU for extra income?
Absolutely! A homeowner has the right to rent their ADU to anyone they choose, however, you must comply with fair housing laws. Per state law, the minimum term for an ADU rental is 30 days, including for Airbnb rentals. Many homeowners find that ADU rental income helps offset construction costs and provides ongoing financial benefits. The appraised value of an ADU addition to your property will be approximately 65% – 75% of the cost of construction.
What's the difference between attached and detached ADUs?
Attached ADUs share a wall with your primary home and often involve additions or internal conversions (like basement apartments), while detached ADUs are completely separate structures on your property. Detached units offer more privacy and flexibility but may cost more due to additional utility connections and foundation requirements. Utilities can be combined with the main residence OR can be separate, depending on your preferences and local requirements.
Are there size restrictions for ADUs?
ADU size limits vary by location, but local governments may not require ADUs to be smaller than 1,000 gross square feet in size in many areas. Most ADUs range from 400-800 square feet, providing comfortable living space while maintaining the “accessory” designation. We’ll help determine the optimal size for your ADU based on local regulations, your property constraints, and intended use.