What Is a Coach House?

A coach house, also called a carriage house or laneway suite, is a secondary structure typically built in a backyard. Unlike traditional home additions, coach houses are completely separate units with their own entrances, kitchens, bathrooms, and utilities. Since they fall under the category of ADUs, they offer a flexible, efficient solution for expanding livable space without changing the footprint of your main home.

What Are Popular Uses for a Coach House ADU?

Building a coach house on your property unlocks a wide range of possibilities for personal use, income generation, and long-term value.

Here are just a few ways you can make the most of this versatile ADU:

• Rental potential: Generate passive income with long- or short-term rentals.
• Family-friendly: Provide independent living space for aging relatives or adult children.
• Remote work ready: Create a quiet, dedicated space for working from home.

• Increased property value: Well-designed ADUs typically raise resale potential.
• Privacy and separation: Unlike basement apartments or shared spaces, coach houses offer full privacy.

What’s Included in Triforce Construction’s ADU Construction Services?

As the leading custom design-build renovation company, Triforce Construction manages every phase and facet of your project. We understand what works and what doesn’t, and we take pride in executing exactly what our customers have in mind by managing every detail of the build.

Our coach house construction services include:

• Site assessment, feasibility planning, and permit coordination
• Custom design with 3D renderings and zoning compliance
• Full site prep, excavation, and structural construction

• Interior finishing, including fixtures, plumbing, electrical, and HVAC
• Final inspections and complete project close-out

What ADU Zoning Requirements Apply to a Coach House?

Zoning requirements for coach houses vary by municipality and can include restrictions on lot size, setbacks, height, and parking. Most areas require the unit to be located in the rear yard and maintain a specific distance from property lines.

These details directly impact the construction process, so we work closely with you to confirm all local bylaws and permitting requirements before moving forward with design and planning.

How Big Can an ADU Be?

The maximum size of an ADU, such as a coach house, depends on local regulations and your lot size. Some municipalities allow a few hundred square feet, while others limit the size based on a percentage of the primary residence. Exact dimensions depend on your property and zoning, which we confirm through the permitting process in coordination with your local planning department.

How Much Does It Cost To Build an ADU?

The cost of building an ADU, specifically a coach house, varies based on several key factors. These include the size of the unit, the level of customization, and the materials you choose. Additional considerations, such as design complexity, site conditions, and utility connections, can also influence the final price.

To ensure accuracy and transparency, we provide a detailed quote following a personalized consultation.

Let’s Build Your Coach House

Your property has the potential for so much more. With Triforce Construction, coach house construction becomes an opportunity to expand your lifestyle, increase your income, and add long-term value to your home. We’re ready to help you take the next step, starting with a preliminary consultation.

Looking for coach house construction? Contact us at (226) 898-2682.