How old are homes in Rutherford County, and what does that mean for decks?
The median home in Rutherford County was built in 2001; 7% predate 1960 and 51% were built since 2000.
Rutherford County has about 138,929 homes, with a median construction year of 2001 (the Tennessee median is 1987). Within our covered ZIP codes — about 127,836 homes — the median is 2000, close to the county as a whole.
The median home in the covered parts of Rutherford County was built around 2000. A deck built with a house of that age is now about 26 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.
| Decade built | Homes | Share |
|---|---|---|
| 2020 or later | 7,897 | 6% |
| 2010s | 30,025 | 22% |
| 2000s | 33,620 | 24% |
| 1990s | 24,365 | 18% |
| 1980s | 16,999 | 12% |
| 1970s | 11,649 | 8% |
| 1960s | 5,286 | 4% |
| 1950s | 5,073 | 4% |
| 1940s | 1,650 | 1% |
| before 1940 | 2,365 | 2% |
Which Rutherford County communities have the oldest and newest homes?
Among covered Rutherford County communities, Smyrna has the oldest housing (median 1998) and La Vergne the newest (median 2001).
Oldest housing: Smyrna (1998), Murfreesboro (2001) and La Vergne (2001). In these communities, expect retrofit decks on older houses and aging decks that need structural inspection, ledger and flashing upgrades, or replacement. Newest housing: La Vergne (2001), Murfreesboro (2001) and Smyrna (1998). Here, projects lean toward enlarging builder-installed decks, adding stairs and railings, and upgrading to low-maintenance boards.
How does Rutherford County's climate affect deck building?
Covered parts of Rutherford County average about 89 days a year at or below freezing (NOAA 1991–2020 normals, 2 stations). Across the covered communities, nearby stations range from about 89 to 102 freezing days a year, so conditions differ noticeably between Rutherford County's higher, more rural areas and its urban core.
The nearest NOAA climate station with 1991–2020 normals is Murfreesboro 5 N, about 4 miles away. It records an average of 89 days a year with a low at or below 32°F — a moderate number of freezing nights. On roughly 82 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 Rutherford County 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 2.2 inches in an average year at Murfreesboro 5 N — so occasional ice is a bigger concern than snow load. Textured boards and good drainage on stairs help on icy mornings.
Rutherford County sees about 55.9 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 88°F, with about 48 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.
What deck projects are most common in Rutherford County?
Based on the age of Rutherford County's housing, the largest group of projects is likely to be replacing or rebuilding aging decks.
- Replacement and major repair: about 53,013 homes (38%) 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 37,922 homes (27%) 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 14,374 homes (10%) predate 1970. Here the priority is confirming that add-on decks are properly attached — or rebuilding them freestanding — before any cosmetic work.
Which Rutherford County communities do you serve?
3 communities in Rutherford County have covered ZIP codes. Only the ZIPs listed are covered.
| Community | Covered ZIPs here | Median year built | Detached homes |
|---|---|---|---|
| Murfreesboro | 37127, 37128, 37129, 37130, 37132 | 2001 | 63% |
| La Vergne | 37086 | 2001 | 79% |
| Smyrna | 37167 | 1998 | 66% |
What decking material works best in Rutherford County?
Light-colored composite or pressure-treated wood is a strong default for Rutherford County because about 82 freeze-thaw days a year are hard on unsealed wood and about 48 days of 90°F+ heat make board color and surface temperature important.
67% of Rutherford County's homes are detached single-family houses and 7% are townhouses or other attached homes; 65% of occupied homes are owner-occupied. With mostly detached homes, wood remains a practical lower-cost option for homeowners willing to clean and seal on schedule.
Who issues deck permits in Rutherford County?
It depends on where you live: incorporated cities and towns in Rutherford County usually run their own permit offices, while unincorporated areas are typically served by Rutherford County.
Tennessee building code adoption and enforcement vary by local jurisdiction. Contact your city or county codes department. Before work starts, confirm with the building department for your exact address whether a permit is required, what drawings and inspections it involves, and whether an HOA must approve the design.