Deck builders in Harwood, MD

Homes in Harwood have a median construction year of 1985, so a deck original to a typical house would now be about 41 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 Anne Arundel County overall (median 1983). Statewide, the median Maryland home was built in 1979. Among the 128 covered Maryland communities with Census data, Harwood ranks #82 for oldest housing. In this ZIP code, 11% of homes were built before 1960, 24% between 1960 and 1979, 44% between 1980 and 1999, and 21% since 2000 — the single largest group dates to the 1980s.

The nearest NOAA climate station with 1991–2020 normals is Annapolis Police Brks, about 9 miles away. It records an average of 81 days a year with a low at or below 32°F — a moderate number of freezing nights. On roughly 75 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 Harwood 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.

Average snowfall near Harwood is about 15.9 inches a year (Upper Marlboro 3 Nnw). That's enough that shoveling and ice-melt choices affect deck surfaces, and stair treads benefit from good texture and drainage.

Precipitation averages about 45 inches a year, falling on about 74 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.

Summers are hot: average summer highs are near 87°F, with about 40 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.

Harwood has about 1,278 housing units across its covered ZIP code. 78% are single-family detached homes, 0% are attached homes such as townhouses and rowhouses, and about 22% are in buildings with two or more units. Roughly 94% of occupied homes are owner-occupied.

Detached single-family homes dominate in Harwood, 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.

• Replacement and major repair: about 756 homes (59%) 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.
• Retrofit decks on older homes: about 253 homes (20%) predate 1970. Here the priority is confirming that add-on decks are properly attached — or rebuilding them freestanding — before any cosmetic work.
• Upgrades and expansions: about 79 homes (6%) 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.

Harwood's milder winters — about 81 freezing nights a year — allow construction through most of the year. Peak summer heat (around 40 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 Harwood, 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 Galesville, about 3.3 miles from the center of Harwood's covered ZIPs. Its median home was built in 1950, 35 years earlier than in Harwood. Harwood has 19 percentage points fewer detached single-family homes (78% vs. 97%), which changes how many projects are backyard decks versus compact townhouse decks. Owner-occupancy is 94% in Harwood compared with 94% in Galesville. Harwood's covered ZIP code span about 21.6 square miles of land with roughly 1,278 homes — about 59 per square mile, a low density that usually allows larger decks and freestanding designs.