Deck builders in Garrett Park, MD

The median home in Garrett Park dates to about 1952, roughly 74 years ago. Most homes from that era were built without a deck; the decks you see now were usually added in later decades, sometimes by previous owners with little documentation.

That history matters: retrofit decks are where missing ledger flashing, undersized footings and nailed-rather-than-bolted connections are most common. Before resurfacing or extending an add-on deck, it is worth confirming how it was framed and attached.

That makes Garrett Park's housing 28 years older than Montgomery County as a whole, where the median home was built in 1980. Statewide, the median Maryland home was built in 1979. Among the 128 covered Maryland communities with Census data, Garrett Park ranks #7 for oldest housing. In this ZIP code, 71% of homes were built before 1960, 16% between 1960 and 1979, 4% between 1980 and 1999, and 10% since 2000 — the single largest group dates to the before 1940.

The nearest NOAA climate station with 1991–2020 normals is Rockville 1 Ne, about 5 miles away. It records an average of 86 days a year with a low at or below 32°F — a moderate number of freezing nights. On roughly 72 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 Garrett Park 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 5.8 inches in an average year at Dalecarlia Rsvr — so occasional ice is a bigger concern than snow load. Textured boards and good drainage on stairs help on icy mornings.

Garrett Park sees about 46.4 inches of precipitation a year, with measurable rain or snow (0.1 inch or more) on about 80 days. Good drainage between boards, clean gaps and a ledger that is properly flashed keep that water from rotting the frame.

Average summer highs reach about 85°F, and around 23 days a year top 90°F. On a deck with full afternoon sun, dark composite can get uncomfortable on those days, so test samples in the sun before choosing a color.

On Garrett Park's many older homes, a wood-look capped composite or a stained cedar deck usually suits the architecture better than high-gloss boards.

Garrett Park has about 341 housing units across its covered ZIP code. 100% are single-family detached homes, 0% are attached homes such as townhouses and rowhouses, and about 0% are in buildings with two or more units. Roughly 97% of occupied homes are owner-occupied.

Detached single-family homes dominate in Garrett Park, 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 286 homes (84%) 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 22 homes (6%) 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 12 homes (4%) 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.

Garrett Park's milder winters — about 86 freezing nights a year — allow construction through most of the year. Spring and fall are still the busiest seasons, so booking early helps.

For Garrett Park, MD, 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 Maryland is on our state page; local rules change, so the building department remains the authority.

The closest covered area is Kensington, about 1.1 miles from the center of Garrett Park's covered ZIPs. Its median home was built in 1958, 6 years later than in Garrett Park. Garrett Park has 22 percentage points more detached single-family homes (100% vs. 78%), which changes how many projects are backyard decks versus compact townhouse decks. Owner-occupancy is 97% in Garrett Park compared with 79% in Kensington. Garrett Park's covered ZIP code span about 0.3 square miles of land with roughly 341 homes — about 1,137 per square mile, a typical suburban density where most homes have usable backyards.