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Two-story decks, multi-level decks and stairs.

Walkout and two-story decks, multi-level decks and stairs, including spiral stairs, framed the way Todd’s crew frames a house: on solid footings, level and built to last.

40+ years building
Custom homes, roofs and decks
Todd, start to finish
One direct contact from design to final board
5.0★ on Google
Every review of Carstensen Construction
Licensed & insured
Minnesota license #165907

Up high, built solid.

A second-story deck carries a lot of weight on a few posts. The footings, the beams and the connection to the house get the most attention.

  • Two-story decks
    An outdoor room off the main floor
  • Multi-level decks
    Steps down to a lower deck or patio
  • Spiral stairs
    Compact stairs where space is tight
  • Straight and landing stairs
    Wide, safe stairs to the yard
  • Footings below frost
    Dug deep enough for Minnesota winters
  • Space underneath
    A patio or pergola below
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What goes into a deck that’s built high.

Footings below the frost line

Minnesota’s building code requires footings below the frost line, 42 inches deep in the Twin Cities area. Footings that are too shallow get pushed up when the ground freezes, and on a tall deck even a small shift shows up as a lean or a sag.

Posts and beams sized for the span

The higher the deck and the longer the span between posts, the bigger the beams need to be. Fewer posts look cleaner underneath, but only if the beams are sized for it.

A tight connection to the house

The ledger board carries half the deck. It has to be bolted to the house framing and flashed so water doesn’t get behind it. It’s one of the first things Todd checks on an old deck, too.

Railings and stairs built to code

Decks more than 30 inches above the ground need guards, and most stairs need handrails. Cable railings keep the view open without giving up safety.

Built right, from the footings up.

Todd’s crew frames every deck the way they frame a house, so it stays solid and level year after year.

  1. 1
    Call or request an estimate
    Tell Todd what you have in mind.
  2. 2
    Design
    Levels, stairs, posts and railings.
  3. 3
    Written estimate
    The full scope in writing.
  4. 4
    Build
    Footings and framing, decking or patio, and rails.
  5. 5
    Final walkthrough
    Walk the finished project together.

Framing a two-story deck on one of our builds.

Two-story decks and stairs we’ve built.

Photographed on our own jobs around Minnesota.

Lakeside deck with cable railing
Boards curved to the pool
Spiral stair
Two-story deck
Cedar railing
White rail and stairs

5.0 stars on Google. Every review, five stars.

“Fast is an understatement. Todd got back to me same day after I initially contacted him.”
Geral G. · Google review
“Todd was extremely helpful, easy to communicate with, gave us honest answers and roofed our house quickly and efficiently. Their work has high quality.”
Chad R. · Google review
“John and Todd and their crew were very professional and did a superior job on our roof and clean up.”
Mike V. · Google review
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Straight answers.

Does a two-story deck need a permit?

Almost always. In Minnesota, decks attached to the house or more than 30 inches above the ground generally need a building permit. Your city’s building department has the details.

Do you build patios?

Yes. We build patios on their own or alongside a new deck, and a Luxury Pergola can go over either one.

How deep do deck footings go in Minnesota?

Below the frost line, which is 42 inches deep in the Twin Cities area under the Minnesota building code. Shallow footings can heave when the ground freezes.

Can I use the space under a second-story deck?

Yes. Many homeowners add a patio underneath, so the deck becomes shade for the space below.

Do you build spiral stairs?

Yes. A spiral stair takes far less room than a straight run, which helps on tight or sloped lots.

Let’s plan your two-story deck.

Free estimates, on budget, and Todd answers his own phone.