Design-BuilD Home additions
Home Additions Built Around How You Live
A well-planned addition creates the space you need while preserving the character of the home you love. At TreHus, our designers, architects, and master craftsmen work together from concept through construction, keeping decisions aligned and the project on budget. Whether you’re adding a four-season porch, a garage, a second story, or an entirely new wing, each project is approached with the same care and craftsmanship.
Our Home Addition Process
Our three-step design-build process is built around the specific demands of home additions — coordinating architectural decisions, materials, and construction planning early so you can make confident choices without costly surprises later.
Feasibility
We explore possibilities for your addition, assess how it connects to the existing home’s foundation, roofline, and structure, and review zoning setbacks and site conditions. Concept designs and preliminary cost ranges give you a clear picture of scope and direction before detailed design begins.
Project Development
Our designers work through every detail with you, from floor plans and exterior form to material selections, including siding, roofing, windows, doors, trim, and interior finishes. Costs and scheduling are refined so expectations are well established before construction starts.
Construction
Your project manager oversees the jobsite while our master carpenters and trade partners execute the design with precision. The design team stays involved throughout, guiding adjustments and ensuring the finished addition reflects the vision.
The TreHus Difference in Home Additions
We begin each home addition by listening to how you want your home to grow and function, then translate that into thoughtful designs and carefully considered details. Home additions come with their own complexities, from integrating new construction with existing structure and rooflines to navigating zoning requirements, mechanical extensions, and finish coordination. At TreHus, we believe success comes down to four elements.
Good People
Architects and interior designers who listen, project managers who solve problems before they reach you, and master carpenters who translate intricate designs into reality with precision and care.
Good Management
Keeping your addition on schedule and within budget through organized oversight and clear accountability at every stage of the project.
Good Systems
Clear communication throughout the process, keeping you informed as selections are made, materials arrive, and construction progresses.
Good Planning
Anticipating the challenges specific to home additions, from coordinating foundations and framing to sequencing mechanical tie-ins and interior buildout, so that work flows smoothly from start to finish.
Seamless Integration, Inside and Out
At TreHus, design and carpentry live under the same roof, which means the people building your addition understand the design intent behind every detail. Our master carpenters have spent years developing the judgment to get the subtle things right — where materials meet, how transitions read, what it takes for new construction to feel native to an older home. These are the details that separate an addition that looks right from one that genuinely belongs.
Home Additions We’re Proud Of
The best way to understand our work is to explore completed home addition projects throughout the Twin Cities and surrounding suburbs. Our portfolio includes kitchen additions, four-season porches, garage additions, second-story expansions, and additions designed as part of larger whole-home remodels.
Frequently Asked Questions
How long does a home addition take?
Every home addition is different, with timing shaped by scope, complexity, existing conditions, and material lead times. During our feasibility phase, we establish a realistic schedule tailored to your specific project and coordinate design decisions early to support a smooth build.
What types of home additions do you design and build?
We design and build a wide range of additions, including kitchen additions, four-season porches, sunrooms, primary suites, second-story expansions, family room extensions, and new wings. Each addition is tailored to the home’s architecture and the way you want to live within it.
How do you ensure a new addition fits with the existing home?
Additions are designed from the start to integrate with the existing home’s rooflines, exterior materials, interior finishes, and proportions. We evaluate the home’s architectural language and structural conditions early so the addition reads as a natural extension rather than an afterthought.
How do you approach material and finish selections?
We guide material selections as a coordinated system, considering siding, roofing, windows, trim, flooring, and interior finishes together. The focus is on durability, performance, maintenance, and a timeless aesthetic that complements the existing home and ages well over time.
How do you keep home additions aligned with budget expectations?
Budget alignment starts early and continues throughout design development. Because design and construction are coordinated in-house, we can identify cost implications early, refine decisions thoughtfully, and avoid surprises during construction.
Let’s Bring Your Home Addition to Life
We would love to hear how you want your home to grow, function, and support the way you live. Start a home addition conversation with our team and explore what’s possible.