Add a full floor without giving up your yard
A second-story addition doubles your living space on the same footprint. For Twin Cities homeowners on lots they love — good schools, walkable neighborhoods, mature trees — it is often the only way to get the space without leaving.
What we do
- Structural feasibility and foundation capacity evaluation
- Full and partial pop-tops (over the garage or one wing)
- Temporary weather protection for the roof-off phase
- New roof, whole-house siding tie-in, and second HVAC zone
- Staircase design that does not wreck your main floor
What it costs
A full second story runs $220,000–$480,000 ($290–$420/sq ft). A partial addition over an attached garage is $120,000–$240,000. Read the second-story addition cost guide for the full breakdown.
The three questions we answer first — before you spend a dollar on plans: can the foundation take it, where do the stairs go, and can you be out of the house for four to six months?
Weather protection is not optional here. Any bid without a temporary roof or tenting line item is not a real bid in Minnesota. We schedule roof-off for May through September whenever possible.
What's included
- Free, no-pressure estimate
- Licensed & fully insured crew
- Cleanup included — we leave it spotless
- Same-day or scheduled service
- Written quote, fair pricing
- 24/7 emergency response
FAQ
How much does a second-story addition cost?
$220,000 to $480,000 for a full second story in the Twin Cities. A partial pop-top over a garage or one wing runs $120,000-$240,000.
Will my foundation support a second story?
Often yes. We start with a structural engineer evaluating footing width, soil bearing, and wall condition. Underpinning, when needed, runs $20,000-$45,000.
Do I have to move out?
For a full second story, yes — typically four to six months once the roof is removed. Partial additions over a garage usually let you stay.
How do you protect the house from weather?
We build a temporary roof or tent the structure during the roof-off phase, and schedule that phase for the warm season whenever possible.
Related cost guide
Second-Story Addition Cost in Minnesota
Real Twin Cities pricing — what you should expect to pay in 2026.
Read the guideSecond-Story Additions near you
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