Deck builders in Hermitage, TN

The median home in Hermitage was built around 1991. A deck built with a house of that age is now about 35 years old — the stage where first-generation pressure-treated decks commonly need major repair or replacement.

Decks built before 2004 were very likely made with CCA-treated lumber, which was phased out of most residential uses at the end of 2003. That doesn't make an existing deck unsafe, but old boards shouldn't be burned, and demolition debris should be disposed of according to local rules.

That makes Hermitage's housing 5 years newer than Davidson County as a whole, where the median home was built in 1986. Statewide, the median Tennessee home was built in 1987. Among the 20 covered Tennessee communities with Census data, Hermitage ranks #6 for oldest housing. In this ZIP code, 2% of homes were built before 1960, 26% between 1960 and 1979, 35% between 1980 and 1999, and 36% since 2000 — the single largest group dates to the 1980s.

The nearest NOAA climate station with 1991–2020 normals is Nashville Berry Fld, about 6 miles away. It records an average of 68 days a year with a low at or below 32°F — a moderate number of freezing nights. On roughly 62 of those days the temperature climbs back above freezing, so water in wood, soil and gaps between boards repeatedly freezes and thaws.

Frost is less severe in Hermitage than in northern states, but footings still have to meet the local frost-depth requirement, and freeze-thaw cycles are enough to work loose nails and open checks in unsealed wood.

Snowfall is light — about 3.2 inches in an average year at Nashville Berry Fld — so occasional ice is a bigger concern than snow load. Textured boards and good drainage on stairs help on icy mornings.

Hermitage sees about 53.8 inches of precipitation a year, with measurable rain or snow (0.1 inch or more) on about 87 days. Good drainage between boards, clean gaps and a ledger that is properly flashed keep that water from rotting the frame.

Summers are hot: average summer highs are near 90°F, with about 68 days a year reaching 90°F or more. Surface temperature is a real consideration — lighter board colors, shade from the house or a pergola, and heat-mitigating composite lines are worth comparing.

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

Hermitage has about 19,456 housing units across its covered ZIP code. 50% are single-family detached homes, 9% are attached homes such as townhouses and rowhouses, and about 40% are in buildings with two or more units. Roughly 52% of occupied homes are owner-occupied.

The mix of detached homes and attached or multi-unit housing in Hermitage means deck projects range from large backyard decks to compact rear decks on narrow lots. Lot size, neighbors' sightlines and any association rules shape the right design.

• Replacement and major repair: about 10,019 homes (51%) 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 3,217 homes (17%) 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.
• Retrofit decks on older homes: about 2,354 homes (12%) predate 1970. Here the priority is confirming that add-on decks are properly attached — or rebuilding them freestanding — before any cosmetic work.

Hermitage's milder winters — about 68 freezing nights a year — allow construction through most of the year. Peak summer heat (around 68 days at 90°F+) is the hardest time to apply stain or work in full sun, so many projects are scheduled for spring and fall.

For Hermitage, TN, 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 Tennessee is on our state page; local rules change, so the building department remains the authority.

The closest covered area is Mount Juliet, about 5.5 miles from the center of Hermitage's covered ZIPs. Its median home was built in 2003, 12 years later than in Hermitage. Hermitage has 31 percentage points fewer detached single-family homes (50% vs. 82%), which changes how many projects are backyard decks versus compact townhouse decks. Owner-occupancy is 52% in Hermitage compared with 80% in Mount Juliet. Hermitage's covered ZIP code span about 27.8 square miles of land with roughly 19,456 homes — about 700 per square mile, a low density that usually allows larger decks and freestanding designs.