How old are homes in Mont Clare, and what does that mean for a deck?
6% of homes in Mont Clare's covered ZIP code were built in 2000 or later and 53% before 1960; the largest group dates to the before 1940.
The median home in Mont Clare dates to about 1958, roughly 68 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 Mont Clare's housing 13 years older than Montgomery County as a whole, where the median home was built in 1971. Statewide, the median Pennsylvania home was built in 1965. Among the 120 covered Pennsylvania communities with Census data, Mont Clare ranks #25 for oldest housing. In this ZIP code, 53% of homes were built before 1960, 29% between 1960 and 1979, 13% between 1980 and 1999, and 6% since 2000 — the single largest group dates to the before 1940.
| Decade built | Homes | Share |
|---|---|---|
| 2000s | 36 | 6% |
| 1980s | 81 | 13% |
| 1970s | 168 | 26% |
| 1960s | 16 | 3% |
| 1950s | 119 | 19% |
| before 1940 | 218 | 34% |
What does Mont Clare's climate mean for deck construction?
Mont Clare averages about 117 days a year at or below freezing, 12.9 inches of snow and 45.1 inches of precipitation, based on NOAA 1991–2020 normals.
The nearest NOAA climate station with 1991–2020 normals is Phoenixville 1 E. It records an average of 117 days a year with a low at or below 32°F — a substantial freezing season. On roughly 104 of those days the temperature climbs back above freezing, so water in wood, soil and gaps between boards repeatedly freezes and thaws.
For Mont Clare, 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.
Snowfall is light — about 12.9 inches in an average year at Graterford 1 E — so occasional ice is a bigger concern than snow load. Textured boards and good drainage on stairs help on icy mornings.
Mont Clare sees about 45.1 inches of precipitation a year, with measurable rain or snow (0.1 inch or more) on about 76 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 86°F, and around 29 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.
Which decking material makes the most sense in Mont Clare?
For most Mont Clare homes, capped composite is the strongest starting point because about 104 freeze-thaw days a year are hard on unsealed wood and many elevated townhouse decks are hard to reach for re-staining.
Other Mont Clare factors: older homes often suit traditional wood or a wood-look composite. On Mont Clare's many older homes, a wood-look capped composite or a stained cedar deck usually suits the architecture better than high-gloss boards.
| Material | How it handles Mont Clare's conditions |
|---|---|
| Pressure-treated pine | Economical; needs sealing to resist freeze-thaw splitting |
| Cedar | Attractive and stable; refinish to keep its color |
| Capped composite | Low maintenance; handles moisture and freeze-thaw well |
| PVC | Lightest and most moisture-proof; premium price |
What kinds of homes are in Mont Clare, and how does that shape deck design?
Mont Clare has about 638 housing units across its covered ZIP code. 23% are single-family detached homes, 31% are attached homes such as townhouses and rowhouses, and about 46% are in buildings with two or more units. Roughly 61% of occupied homes are owner-occupied.
With a large share of townhouses, many decks in Mont Clare are elevated rear decks over a walk-out level, built close to neighbors. Privacy screens, setbacks, guard height and HOA design approval tend to drive these projects, and repairs to shared structures may require coordinating with an association.
What deck projects are most common in Mont Clare?
Based on the age of Mont Clare's housing, the largest group of projects is likely to be retrofitting or rebuilding decks added to older homes.
- Retrofit decks on older homes: about 353 homes (55%) 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 249 homes (39%) 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 0 homes (0%) 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.
When is the best time to plan a deck project in Mont Clare?
Mont Clare has a defined building season. Spring and early fall offer the most comfortable working weather; winter is a good time to settle the design and apply for permits. Stains and sealers generally need dry weather and moderate temperatures, so plan wood finishing for late spring or early fall.
Do you need a permit to build a deck in Mont Clare?
Often, yes — especially for attached or elevated decks — but the rules are set locally. Check with the building department that serves your address: the municipality, or Montgomery County for unincorporated areas.
For Mont Clare, PA, 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, and whether your townhouse association must approve the design first. Statewide code background for Pennsylvania is on our state page; local rules change, so the building department remains the authority.
How does Mont Clare compare with nearby covered areas?
The closest covered area is Phoenixville, about 1.7 miles from the center of Mont Clare's covered ZIPs. Its median home was built in 1983, 25 years later than in Mont Clare. Mont Clare has 27 percentage points fewer detached single-family homes (23% vs. 50%), which changes how many projects are backyard decks versus compact townhouse decks. Owner-occupancy is 61% in Mont Clare compared with 72% in Phoenixville. Mont Clare's covered ZIP code span about 0.7 square miles of land with roughly 638 homes — about 911 per square mile, a typical suburban density where most homes have usable backyards.
| Area | Distance | Median year built | Covered ZIPs |
|---|---|---|---|
| Phoenixville | 1.7 mi | 1983 | 1 |
| Oaks | 2.3 mi | 1957 | 1 |
| Kimberton | 4.1 mi | n/a | 1 |
| Collegeville | 4.9 mi | 1993 | 1 |
| Royersford | 5 mi | 1992 | 1 |
| Spring City | 5.6 mi | 1971 | 1 |
Deck planning checklist for Mont Clare homeowners
- Confirm your ZIP code is 19453, the covered Mont Clare ZIP.
- Find out when your current deck was built and whether it uses pre-2004 treated lumber.
- Ask whether a freestanding design avoids attaching to older house framing.
- Ask what footing depth your building department requires for frost.
- Check HOA or association approval rules and setbacks from neighbors.
- Probe the ledger, post bases and joist tops for soft wood before planning a resurface.
- Call 811 before any digging so utility lines are marked.

