2 vetted design-build firms serving Plymouth · how we vet & rank
Additions add true square footage — primary suites, family rooms, mudrooms, or a second story. They are structurally the most involved remodel category, requiring foundation work, framing into the existing structure, and careful matching of exteriors.
With more than 45 years in the trade, Dean Johnson Homes leads with remodeling — room and second-story additions, kitchens, baths, and basements — alongside new builds across the west metro.
A four-generation Minnetonka design-build firm with 70+ years of history, Boyer Building runs full-time carpentry crews and a licensed architect for custom homes and remodels across the west metro.
Additions in the Twin Cities typically run $300–$500+ per square foot all-in, with second-story additions and complex tie-ins at the high end.
Additions in the Twin Cities typically run $300–$500+ per square foot all-in, with second-story additions and complex tie-ins at the high end. Plymouth's older housing stock can add scope — outdated wiring, plaster, and framing surprises are common in pre-war homes, so build contingency into the budget.
We currently list 2 design-build remodelers handling home additions in Plymouth. All are being verified against Minnesota's contractor licensing records as we expand the directory.
Almost always, yes. Any project touching plumbing, electrical, structure, or egress requires permits and inspections in Plymouth. A legitimate contractor pulls the permits themselves — treat any suggestion to skip permitting as a red flag.
Additions typically run 3–6 months of construction depending on size and season — foundation work in a Minnesota winter needs experienced scheduling.
Tell us about your project and we’ll shortlist up to 3 vetted local builders that fit your city, budget, and timeline.
Planning new construction instead? See Plymouth home builders.