Deck builders in Minnetonka, MN

Homes in Minnetonka have a median construction year of 1972, so a deck original to a typical house would now be about 54 years old — beyond the point where wood framing, fasteners and flashing can be assumed sound.

Many decks from the 1970s and 1980s were built before today's detailed deck provisions appeared in model codes. Common issues on decks of this age include corroded hangers, posts set directly in soil and ledger boards fastened with nails. Replacement is often the better value than repeated repairs.

That is about the same as Hennepin County overall (median 1973). Statewide, the median Minnesota home was built in 1979. Among the 62 covered Minnesota communities with Census data, Minnetonka ranks #7 for oldest housing. In this ZIP code, 27% of homes were built before 1960, 37% between 1960 and 1979, 28% between 1980 and 1999, and 8% since 2000 — the single largest group dates to the 1950s.

The nearest NOAA climate station with 1991–2020 normals is Mpls Flying Cloud AP, about 6 miles away. It records an average of 145 days a year with a low at or below 32°F — a long, hard freezing season. On roughly 74 of those days the temperature climbs back above freezing, so water in wood, soil and gaps between boards repeatedly freezes and thaws.

For Minnetonka, that means footings must bear below the locally required frost depth to avoid heaving, and wood surfaces should be kept sealed so absorbed water doesn't split boards over winter. Synthetic decking tolerates freeze-thaw well but still needs the manufacturer's expansion gaps.

Snow is a major factor: the Chanhassen Wsfo station averages about 54.7 inches a year. Framing has to carry snow load, stairs need a plan for winter use, and snow removal should be done with plastic-bladed shovels and ice-melt products the decking manufacturer allows.

Precipitation averages about 30.6 inches a year, falling on about 55 days with 0.1 inch or more — wet enough that drainage and flashing still matter, but dry spells also let wood surfaces dry out and check in the sun.

Summer heat is mild by comparison — average summer highs near 81°F and only about 14 days a year at 90°F or above — so board color can be chosen mostly on looks.

Budget, upkeep tolerance and sun exposure on your particular lot still decide the final choice between these options.

Minnetonka has about 8,653 housing units across its covered ZIP code. 77% are single-family detached homes, 8% are attached homes such as townhouses and rowhouses, and about 15% are in buildings with two or more units. Roughly 85% of occupied homes are owner-occupied.

Detached single-family homes dominate in Minnetonka, so most decks are backyard decks attached to the rear of the house. That gives more freedom on size, layout and stairs, and makes a well-planned deck one of the most-used rooms of the home.

• Retrofit decks on older homes: about 4,074 homes (47%) predate 1970. Here the priority is confirming that add-on decks are properly attached — or rebuilding them freestanding — before any cosmetic work.
• Replacement and major repair: about 3,902 homes (45%) were built between 1970 and 1999, the age group whose original or early add-on decks are most likely to have worn-out framing, connectors and boards.
• Upgrades and expansions: about 428 homes (5%) were built since 2010. Their decks are usually sound but small or builder-grade, so enlarging the deck, adding stairs and switching to composite or upgraded railings are common.

With about 145 freezing days a year, the building window in Minnetonka is compressed. Design, drawings and permits are usually handled in winter so footings can go in as soon as the ground allows in spring, and finishes like stain are applied before nights turn cold in fall.

For Minnetonka, MN, ask the permit office whether your deck needs a permit based on its size, height and attachment to the house, which drawings and inspections are required. Statewide code background for Minnesota is on our state page; local rules change, so the building department remains the authority.

The closest covered area is Hopkins, about 3.3 miles from the center of Minnetonka's covered ZIPs. Its median home was built in 1979, 7 years later than in Minnetonka. Minnetonka has 43 percentage points more detached single-family homes (77% vs. 35%), which changes how many projects are backyard decks versus compact townhouse decks. Owner-occupancy is 85% in Minnetonka compared with 51% in Hopkins. Minnetonka's covered ZIP code span about 11.4 square miles of land with roughly 8,653 homes — about 759 per square mile, a low density that usually allows larger decks and freestanding designs.