Boise’s #1 ADU Construction Pros | Freimark Construction

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Serving Treasure Valley

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Upgrade Your Home With an ADU

Unlock your property’s full potential with a custom Accessory Dwelling Unit (ADU) from Freimark Construction. As Boise’s premier ADU builder, we specialize in creating beautiful, functional secondary homes that seamlessly blend with your existing property. From initial designs for an in-law suite to final construction, we deliver exceptional quality that enhances your lifestyle and investment.

Why Choose an ADU

An Accessory Dwelling Unit, or ADU, is a self-contained living space built on your existing property. Often called a granny flat or guest house, it's a smart investment for Boise homeowners seeking flexible housing solutions. Whether accommodating family, generating rental income, or creating a dedicated workspace, an ADU expands your living area and boosts property value without moving. It's an innovative, versatile addition that maximizes your Idaho home's potential.

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Increased Property Value

Adding a detached ADU or garage apartment conversion is one of the most effective ways to boost your property's market value in Boise. This new, functional square footage is highly attractive to future buyers, providing a significant return on investment and making your home stand out.

Additional Income

Generate a consistent new revenue stream by renting out your ADU. Whether for long-term tenants or short-term vacation stays, a guest house provides significant rental income in Ada County, helping you offset your mortgage and build wealth through your own backyard property.

Flexible Living Options

An ADU adapts to your family's changing needs over time. Use it as a private guest suite for visitors, a quiet home office away from the main house, a creative studio, or a starter home for adult children. Its versatility provides endless possibilities for your property.

Sustainable Living

ADUs promote a more sustainable lifestyle with a smaller environmental footprint. These compact, energy-efficient homes require fewer resources to build and maintain, leading to lower utility bills and a reduced impact on the environment, aligning with modern eco-conscious values in Idaho.

Aging in Place

Provide a safe, accessible, and independent living solution for aging parents or relatives with a custom in-law suite. An ADU allows family members to live close by for support and connection while maintaining their own privacy and dignity, offering peace of mind for everyone involved.

Enhanced Privacy

A detached ADU offers unparalleled privacy for both your family and its occupants. A separate entrance and dedicated living space ensure everyone has their own sanctuary. This is the ideal solution for multi-generational households, renters, or long-term guests, fostering harmony and independence.

Design Consultation

We collaborate with you to create custom ADU plans that match your vision, property, and budget.

Planning & Permits

Our team expertly navigates Boise’s zoning codes and handles all necessary permits to ensure a smooth, compliant project.

Construction

Our skilled craftsmen build your ADU with precision, using high-quality materials and maintaining a clean, organized job site.

Finishing Touches

We manage every final detail, from interior paint to fixture installation, delivering a move-in-ready, high-end space.

WHY CHOOSE US

The Freimark Construction Difference

We deliver unparalleled quality and a seamless client experience through our commitment to these four core principles.

Experienced Team

Led by founder Zach Freimark, our team brings over 15 years of high-end residential construction expertise.

Custom Solutions

We don't build cookie-cutter units. Every ADU is designed and built to reflect your unique property and goals.

Transparent Pricing

You receive a detailed, itemized quote so you know exactly how much your ADU will cost. No surprises.

Exceptional Craftsmanship

Our meticulous attention to detail and superior workmanship ensure your new ADU is built to last for generations.

Faq

Boise FAQ’s for ADU Construction

What factors influence the cost of attached and detached ADUs?

ADU costs depend on size, type (attached vs. detached), site conditions, and utility connections. Detached ADUs are typically more expensive due to separate foundations and utility runs. Design complexity, material choices, and required upgrades to existing systems also impact total cost.

How can I check ADU zoning for my property?

You can check ADU eligibility by reviewing your property’s zoning through the City of Boise planning resources or zoning maps. Key factors include lot size, setbacks, height limits, and whether detached ADUs are allowed. A contractor or designer can confirm zoning and code requirements during early planning.

What are the benefits of building an ADU?

ADUs offer rental income potential, flexible living space for family or guests, and increased property value. They’re a practical way to maximize existing land without moving. ADUs can also support multigenerational living or long-term housing flexibility.

What does it cost to upgrade water and sewer lines for an ADU?

Water and sewer upgrades vary based on line capacity, distance from connections, and city requirements. Costs can increase if existing systems need resizing or replacement to support the ADU. These upgrades are often identified during design and permitting to avoid delays during construction.