More Space Without the Moving Boxes

Home addition pricing depends on scope — square footage, foundation type, structural integration complexity, roofline matching, and mechanical tie-ins (HVAC, electrical, plumbing) all factor in. Every Thornapple project is protected by a fixed-price contract — the number we quote is the number you pay. No allowance games, no surprise change orders.

A typical home addition takes 3-5 months from groundbreaking to final walkthrough. Timeline depends on scope — a single-room bump-out moves faster than a two-story addition with a new roofline. We build a detailed schedule before work begins and share it through your project portal so you always know what's happening and when.

Yes — and we handle all of it. Permits, zoning setback verification, HOA submissions, and municipal inspections are all included. You should never have to visit a building department or research zoning codes. We evaluate your lot constraints before design even begins to ensure your addition is fully compliant.

This is one of the most critical aspects of any addition, and it's where many contractors fall short. We match rooflines, siding profiles, window proportions, trim details, and foundation lines so the addition looks like it was always part of the original home — not something bolted on as an afterthought.

Absolutely. We design and build accessory dwelling units and in-law suites with separate entrances, full kitchenettes, bathrooms, and living areas. Whether it's for aging parents, adult children, or rental income, we handle zoning research, design, and construction from start to finish.

Yes. We coordinate with licensed structural engineers to ensure your addition's foundation, load paths, and connection points are properly designed. Engineering is not something you should have to source or manage on your own — it's built into our process and included in your project scope.