Last reviewed May 2026 by WM Construction, Licensed MA General Contractor
WM Construction handles full deck construction across Cape Cod, footing excavation, frost-depth concrete piers, framing per IRC R507 standards, ledger attachment with proper flashing, decking installation, and code-compliant railing systems. Standard projects run 2 to 4 weeks on site, longer for multi-level or wraparound configurations. Trade sequence: site survey, footings excavated to Cape Cod's 48-inch frost-line minimum, concrete pier inspection, ledger board flashed and through-bolted to the rim, joist framing with Simpson Strong-Tie hangers, decking, then guardrail and stair installation per code. Approved Hanscom Air Force Base vendor since 2015. Office: 1550 Falmouth Road, Suite 26, Centerville, MA 02632. Call (774) 224-8561.
Most Cape Cod deck building projects come from one of three triggers. A homeowner replacing an aging or rotted deck built 15 to 30 years ago where the original framing, decking, or both have reached end of service life and targeted repair makes less sense than rebuild. A homeowner adding outdoor living space to support the coastal lifestyle that brings most owners to Cape Cod in the first place, scoping new deck construction where none currently exists or where existing outdoor space is inadequate. A combined-scope project where the deck is being built alongside a home addition, kitchen renovation, or siding replacement, with the deck integrated into the broader scope.
The defining technical reality of deck construction is that the visible decking and railing represent the smallest portion of the technical work. The framing, footing depth, ledger attachment to the house, and code-compliant connections are what determine whether the deck lasts 30 years or fails inside 10. WM Construction is a Cape Cod-based licensed Massachusetts general contractor, not a national franchise booking jobs through a 1-800 line, operating from Centerville since 2016 and an approved Hanscom Air Force Base vendor since 2015.
| Configuration | Typical Height | Defining Scope | On-Site Timeline |
|---|---|---|---|
| Ground-level deck | Under 30" | Footings only, no railing required | 2–3 weeks |
| Raised deck | 30"+ | Code-compliant 36"+ guardrails, deeper footings | 3–4 weeks |
| Multi-level deck | Varies | Stair construction, drainage planning | 4–5 weeks |
| Wraparound deck | Varies | 2+ sides, larger footing count and framing | 4–6 weeks |
Ground-level decks sit close to grade (typically less than 30 inches high) and often do not require railings under building code. Simpler structural scope without elevation considerations, faster construction timeline. Best for homes on flat lots where the deck connects to a first-floor walkout, patio door, or low ground-floor entry.
Raised decks elevate above grade (30 inches or higher) and require code-compliant guardrails (36 inches minimum height for residential, 42 inches for commercial). Most common deck configuration on Cape Cod homes built on full or partial basement foundations. Requires deeper footings, proper post-to-beam connections, and engineered guardrail attachment.
Multi-level decks combine two or more deck heights connected by stairs, often used to navigate sloping lots or to define separate use zones (cooking deck, dining deck, lounging deck). Higher complexity in framing, drainage planning, and stair construction. Best for sloping lots, larger lifestyle decks, or properties wanting visual definition between outdoor zones.
Wraparound decks extend across two or more sides of the house, often connecting front and side or side and back. Common on Cape Cod waterfront and panoramic-view properties where outdoor circulation around the house is the design goal. Substantially larger framing scope and footing count than single-side decks.
Cape Cod frost line depth requires deck footings to extend to 48 inches minimum below grade per IRC R507 and Massachusetts 780 CMR. Footings shallower than frost depth lift and shift seasonally, producing deck movement, ledger stress, and eventual structural failure. Concrete pier footings (sonotube or precast) inspected by the Cape Cod town inspector before backfill on every deck project.
The ledger board (the framing member that attaches deck to house) is the highest-failure-risk connection on any deck. Proper installation includes lag bolt or through-bolt connection at code-spec spacing, continuous flashing behind the ledger to prevent water infiltration into the house, and isolation of the ledger from siding to allow drainage. Ledger failures are the leading cause of catastrophic deck collapse, and most ledger failures trace to inadequate flashing.
Floor framing uses galvanized or stainless joist hangers (Simpson Strong-Tie or equivalent), beam-to-post connectors, and post bases that meet IRC R507 load requirements. Hardware undersized for span and load produces sag, deflection, and connection failure over time.
Guardrails on raised decks must be 36 inches minimum height for residential use, with balusters spaced no more than 4 inches apart (the sphere rule). Stairs require 7.75 inch maximum riser height, 10 inch minimum tread depth, and continuous handrails. Stairs and guardrails are the most commonly cited code violations on Cape Cod town inspections, especially on owner-built or unpermitted decks.
Every WM Construction deck building scope closes with a written one year workmanship warranty on the install work. Manufacturer warranties on decking material, fasteners, and railing systems remain separate.
Onsite walkthrough at your Cape Cod home to inspect the proposed deck location, assess grade and drainage, identify house attachment points for ledger placement, discuss deck configuration (ground-level, raised, multi-level, wraparound), and review material preferences. Setback and lot coverage review where applicable. Cedar Shake Siding integration discussed where deck and siding scope pair under one project. Typically one to two hours on site.
You select decking material (composite, cedar, pressure-treated, exotic hardwood), railing system, balusters, and any built-in features (benches, planters, lighting). Selections finalized in writing before contract signing. Estimate breaks out footings, framing, ledger and flashing, decking, railing, stairs, and finish hardware as distinct line items.
Contract signed with milestone schedule. Building permit pulled with the Cape Cod town under 780 CMR. Insurance certificates delivered before mobilization. Material delivery coordinated to align with installation start. Special-order decking, railing, or hardware noted with extended lead times.
Footings excavated to 48 inch minimum frost depth and inspected by Cape Cod town inspector before concrete pour. Concrete piers installed and cured. Ledger board attached to house with proper flashing, lag bolt or through-bolt connection per IRC R507. Beams, posts, and joists installed with proper hangers and hardware.
Decking installed with proper fasteners (hidden clips for composite, stainless or coated screws for wood). Railing system installed with code-compliant guardrail height and baluster spacing. Stairs built to code-compliant rise and tread dimensions. Final inspection scheduled with the Cape Cod town.
Cape Cod deck building cost is shaped by deck size, decking material, configuration, and structural complexity. Deck size scales material and labor proportionally. Decking material is the largest single variable: pressure-treated lumber runs lowest, cedar runs higher, composite (Trex, TimberTech, AZEK) runs higher still, exotic hardwoods (ipe, mahogany) run highest. Configuration matters: ground-level decks run lowest due to simpler footings and no railings, raised decks add railing scope, multi-level decks add stair and framing complexity, wraparound decks scale footing count and framing substantially.
Site conditions affect cost: flat lots with easy excavation run lowest, sloping or ledge-rock lots add footing labor and sometimes engineering. Railing system selection swings cost: standard wood balusters lowest, glass panel highest. Stair scope adds material and labor proportional to rise. Special features (built-in benches, planters, lighting, screened-in scope) add material and labor. We provide line item estimates rather than per-square-foot pricing because per-square-foot numbers obscure the configuration and material decisions that drive total cost. Call (774) 224-8561.
Customer Reviews
★★★★★WM tore out our 25-year-old PT deck in Falmouth and rebuilt with a Trex Transcend deck and aluminum balusters. They found rot at the original ledger we didn't know about, flashed it correctly, and replaced sistered joists in the rim. Inspector signed off first time on framing.
★★★★★Marcelo's crew built a wraparound cedar deck on our Chatham waterfront, 14 footings to 48 inches, full Simpson hardware, and tight stair-to-grade framing. Three years on the coast and not a single board cupped. Worth what we paid.
WM Construction builds decks across Cape Cod and Barnstable County, Upper Cape (Bourne, Sandwich, Falmouth, Mashpee), Mid-Cape (Barnstable, Centerville, Yarmouth, Dennis), and the Outer Cape (Brewster, Harwich, Chatham, Orleans, Eastham). We also serve Plymouth and South Shore communities just over the Sagamore Bridge and Bourne Bridge. Year-round homeowners replacing aging decks, owners adding new outdoor living space, and combined-scope projects pairing decks with additions or renovations all schedule construction through the same licensed crew.
Office and showroom: 1550 Falmouth Road, Suite 26, Centerville, MA 02632. Call (774) 224-8561 to schedule an on-site deck building consultation. Approved Hanscom Air Force Base vendor since 2015.
Yes. Every Cape Cod town requires a building permit under 780 CMR for residential deck construction, with footing inspection before backfill, framing inspection before decking, and final inspection before use. Permit fees range $150–$400 by town. WM Construction pulls every permit in our name and schedules each inspection.
Standard deck construction typically runs 2 to 4 weeks on site, depending on size and configuration. Ground-level decks with simple footing scope run 2 to 3 weeks. Raised decks with code-compliant railing scope run 3 to 4 weeks. Multi-level and wraparound decks run 4 to 6 weeks. Permit timing, inspection scheduling, and special-order decking lead times can extend the total.
Cape Cod frost line depth requires deck footings to extend to 48 inches minimum below grade. Footings shallower than frost depth lift and shift seasonally, producing deck movement, ledger stress, and eventual structural failure. Concrete pier footings (sonotube or precast) get inspected by the Cape Cod town inspector before backfill on every deck project.
The ledger board connection between deck and house is the single highest-failure-risk connection on any residential deck. Most ledger failures trace to inadequate flashing or undersized fasteners. Proper installation includes lag bolt or through-bolt connection at code-spec spacing, continuous flashing behind the ledger, and isolation of the ledger from siding to allow drainage.
Pressure-treated runs lowest cost but requires regular sealing and weathers visibly within 2 to 3 years on coastal exposure. Cedar offers natural beauty and good rot resistance with sealing every 1 to 2 years. Composite (Trex, TimberTech, AZEK) runs higher upfront but requires no sealing or staining and resists coastal salt exposure better than wood.
<p>Building a deck on a Cape Cod home is a structural decision before it is a decking-material decision, and the difference between a deck that lasts 30 years and one that fails in 10 is whether the contractor handled the footing depth, ledger flashing, and connection hardware correctly. Call <strong>(774) 224-8561</strong> or request a site visit, and Jackeline or Marcelo will walk through your property, discuss configuration and material options, and provide a written line-item scope.</p> <p>Office: 1550 Falmouth Road, Suite 26, Centerville, MA 02632. Approved Hanscom Air Force Base vendor since 2015.</p>
