Deck and porch projects you can request
Deck building
New wood and composite decks, from small landings to multi-level.
Composite decks
Low-maintenance composite and PVC decking.
Deck replacement
Tear out an old deck and build a new one.
Deck repair
Boards, joists, railings, stairs and refinishing.
Screened porches
Screen in a deck or porch, or build a new one.
Deck railings and stairs
New or replacement railings and deck stairs.
A deck in Ossining usually has to deal with a slope. The village rises steeply from the Hudson, and many backyards drop away from the house, so a deck that sits at grade in front can stand eight or ten feet in the air at the back. That changes the framing, the footings, the stairs and the railing, and it is why two decks of the same size can carry very different prices. Send us a few details about your yard and we pass them to a local deck builder who works in Ossining and the surrounding towns. They reach out, walk the site and give you a written estimate.
Trusted Local Contractors puts installed deck costs in Westchester at about $30 to $45 per square foot for pressure-treated lumber, $40 to $55 for cedar, $45 to $65 for composite and $55 to $75 for PVC. A basic 12 by 12 foot pressure-treated deck runs about $7,000 to $12,000 in its guide, and a 16 by 24 foot composite deck about $24,000 to $38,000. Those totals include footings, framing, railings, stairs and a basic permit, but not site prep.
Most of a deck's life depends on parts nobody looks at: footings that go below the frost line, a ledger board properly flashed and bolted to the house, joists spaced for the decking you choose, and hardware rated for treated lumber. A good builder will explain each of those in plain terms. Ask.
Below you will find cost ranges with sources, notes on permits and a list of the towns where local builders take deck requests, from Peekskill and Yorktown down to Tarrytown. The estimate form takes a couple of minutes.
Timing is worth a thought too. Builders here tend to book up in spring, and a permit can take several weeks before the first footing is dug. Homeowners who plan over the winter, with a rough size, a material and a budget in mind, are usually the ones building in May rather than August. Even if you are a season away, an early estimate gives you real numbers to plan around.
What to look for in a deck builder
Slope, soil, rock and the height of the door all change the job. A real estimate starts with someone walking the yard.
Requests go to independent deck builders already working in Ossining and nearby northern Westchester towns.
Our ranges come from county-specific guides, linked, so you can tell a fair price from a high one.
Most Westchester municipalities want a building permit for a new deck. The contractor should pull it.
Westchester County licenses home improvement contractors through its Department of Consumer Protection.
How it works
- Tell us about the yardUse the estimate form to describe the deck you want, the rough size and your town. A photo of the back of the house helps.
- A local builder gets itWe pass your request to a deck builder who works in your part of northern Westchester.
- Site visit and estimateThe builder reaches out, walks the yard, checks the slope and access, and writes up a price.
- You decideLook over the estimate and choose whether to go ahead. There is no obligation.
Wood, composite or PVC
Pressure-treated pine is the least expensive and the most common framing lumber for any deck. As a walking surface it needs regular cleaning and staining. Cedar looks warmer and resists rot naturally but still needs care. Composite and PVC boards cost more up front and need far less upkeep, with no staining. Many builders frame with pressure-treated lumber and use composite or PVC on top. See composite decks for more.
Footings and the frost line
Winters here freeze the ground. If deck footings sit above the frost line, the ground heaves them and the deck shifts. Trusted Local Contractors puts the frost depth in Westchester at 42 inches. In Briarcliff Manor, large glacial boulders are common, and rock can turn up close to the surface elsewhere in these hills, which can mean pinning footings to rock or moving a post to get around a boulder. Some builders use helical piers instead of poured concrete.
Permits
Croton-on-Hudson and Pleasantville both state on their village websites that a building permit is needed for a deck, and most Westchester towns and villages treat new decks the same way. Permits usually involve drawings, setbacks from property lines and an inspection of the footings and framing. Your contractor should pull the permit. Ask before you sign.
Repair, replace or rebuild
If your deck is soft underfoot, the railing wobbles or the ledger looks stained and rotted, it is time for a closer look. Sometimes new boards on sound framing are enough. Sometimes the structure needs to go. See deck repair and deck replacement for how builders make that call.
What a deck costs in Westchester
Published ranges, not quotes. Per-square-foot and size figures are from Trusted Local Contractors' 2026 Westchester guide. Repair and porch screening are national figures from Fixr and Angi.
| Project | Typical range |
|---|---|
| Pressure-treated wood deck, installed | about $30 to $45 per sq ft |
| Cedar deck, installed | about $40 to $55 per sq ft |
| Composite deck, installed | about $45 to $65 per sq ft |
| PVC deck, installed | about $55 to $75 per sq ft |
| 12 x 12 ft pressure-treated deck | about $7,000 to $12,000 |
| 16 x 24 ft composite deck | about $24,000 to $38,000 |
| Deck repair, most jobs (national) | about $500 to $3,000 |
| Screening in an existing porch (national) | about $5 to $20 per sq ft |
Rounded published ranges, not quotes. Your price depends on height, slope, footings, rock, access, railing and stair choices, permits and site prep.
Sources: Trusted Local Contractors, Westchester deck costs; Fixr, deck repair; Angi, screened-in porch
Towns where local builders take deck requests
Ossining first, then the river towns from Peekskill to Tarrytown and inland through Briarcliff Manor, New Castle, Mount Pleasant, Yorktown, Somers and Bedford, all within about 15 miles.
Questions homeowners ask
How much does a new deck cost in Ossining?
Trusted Local Contractors puts Westchester decks at about $30 to $45 per square foot for pressure-treated wood and about $45 to $65 for composite, installed. A 12 by 12 foot pressure-treated deck runs about $7,000 to $12,000. Steep lots and tall decks cost more.
Who builds the deck?
An independent local deck builder. We pass your request to a builder who works in Ossining, and they reach out, give you their own estimate and build the deck if you hire them.
Do I need a permit for a deck in Westchester?
In most cases, yes. Croton-on-Hudson and Pleasantville both say on their village websites that decks need a building permit, and most nearby municipalities do the same. Your contractor should pull it.
How deep do deck footings go here?
Below the frost line. Trusted Local Contractors puts the frost depth in Westchester at 42 inches. Your builder and the local building department will confirm what applies to your property.
Is composite worth the extra cost?
If you do not want to stain every few years, often yes. Composite costs more installed but needs mainly washing. Many builders still frame with pressure-treated lumber underneath.
How long does it take to build a deck?
The building itself often takes from several days to a couple of weeks depending on size and height. Permits can add weeks before work starts. Trusted Local Contractors says Westchester permits often take 2 to 6 weeks.
How do I check a deck builder's license?
Westchester County requires home improvement contractors to hold a license from its Department of Consumer Protection, which posts a list of licensed contractors. Ask for the number and proof of insurance.