Dormer Pop-Up
Typical Timeline
6 to 10 weeks
Sq Ft Unlocked
100 to 300 sq ft
Best for
Targeted upstairs space, partial second floor
Centerville, MA
Home Builder Services on Cape Cod, MA
Last reviewed May 2026 by WM Construction, Licensed MA General Contractor
WM Construction is a licensed Home Builder Cape Cod firm offering second story additions and major structural expansion work across Barnstable County. Adding a second story to a Cape Cod home typically takes 10 to 16 weeks and unlocks 600 to 1,200 square feet of new living space without requiring lateral footprint expansion or setback variance review under 780 CMR (Massachusetts State Building Code). Cape Cod homeowners scope second story builds when the existing footprint is already at lot coverage limits, when the lot configuration prevents lateral expansion, or when adding upstairs bedrooms is the most efficient path to multigenerational space. Licensed Massachusetts General Contractor since 2016, HIC registered, EPA RRP Lead Safe certified, approved Hanscom Air Force Base vendor since 2015, 5.0 rated across 39 verified Google reviews. Call (774) 224-8561 or visit our office at 1550 Falmouth Road, Suite 26, Centerville, MA 02632.
Home Builder Services for Cape Cod Properties
Home Builder work on Cape Cod operates under different constraints than interior renovation or finish-only scope. Adding a second story rebuilds the roof system, integrates new framing into the existing structure, requires structural engineering for load paths, and runs full mechanical, electrical, and plumbing scope through the new space. Cape style homes built between 1940 and 1985 commonly have load-bearing walls running parallel to the ridge that can carry second story loads with proper engineering. Massachusetts 2024 to 2025 zoning reform on accessory dwelling units (ADUs) is also opening new Home Builder opportunities for many Cape Cod homeowners on single-family lots.
WM Construction (legally WM Construction) is a Cape Cod-based licensed Massachusetts general contractor, not a national modular-home franchise, design-build referral platform, or single-trade subcontractor, operating from Centerville since 2016 and an approved Hanscom Air Force Base vendor since 2015. We pull permits in our own name, coordinate licensed Massachusetts Professional Engineer (P.E.) drawings on every structural scope, and close every project with a written one year workmanship warranty. For homeowners scoping smaller-footprint expansions instead of full second stories, our Home Additions on Cape Cod services cover lateral additions, dormers, and partial-floor expansions.
Home builder scope on Cape Cod often coordinates with broader work. Our Cape Cod home additions cover expansion projects, general contractor services handle whole-home renovations, and our building restoration practice integrates new-construction methods with original Cape Cod architecture.
Cape Cod expansion scope at a glance
Partial Second Story
Typical Timeline
8 to 12 weeks
Sq Ft Unlocked
300 to 700 sq ft
Best for
Half-story expansions on Cape style homes
Full Second Story Addition
Typical Timeline
10 to 16 weeks
Sq Ft Unlocked
600 to 1,200 sq ft
Best for
Lot-coverage-constrained vertical expansion
ADU Construction
Typical Timeline
12 to 20 weeks
Sq Ft Unlocked
300 to 900 sq ft
Best for
Multigenerational, by-right under MA 2024-25 reform
Home Builder Services We Offer on Cape Cod
Second Story Addition on Cape Cod
Adding a second story to a Cape Cod home typically takes 10 to 16 weeks and unlocks 600 to 1,200 square feet of new living space. Full structural framing, roof rebuild, siding integration, and finish work coordinated under one licensed contractor. Stamped Massachusetts P.E. drawings on every project. Licensed GC, HIC certified, one year workmanship warranty.
Explore Second Story Addition on Cape Cod →What to Look for in a Home Builder on Cape Cod
Structural Engineering Drawings Stamped Before Permit
Every second story addition or major structural expansion requires stamped engineering drawings from a licensed Massachusetts Professional Engineer specifying foundation upgrades, beam material, framing connections, and load path calculations under 780 CMR. Town permit offices require the stamped drawings before permit approval. Skipping the engineer is illegal and uninsurable on any project of this scope.
Foundation Capacity Review on the Existing Home
A second story doubles the dead load the existing foundation has to carry. Cape Cod homes built between 1940 and 1985 have foundations sized for original single-story or 1.5-story loads, and a structural engineer must verify capacity before second story scope proceeds. Foundations that are under-spec require sistering, reinforcement, or in some cases full replacement.
Active Massachusetts GC and HIC Registration
Massachusetts requires a Construction Supervisor License and a Home Improvement Contractor registration for residential structural work. Verify both numbers on the state website before signing. Unlicensed builders cannot legally pull permits for second story or expansion scope.
Coordinated Trade Sequencing Through Structural Work
A second story addition involves demolition of the existing roof, structural framing, mechanical and electrical rough-in, drywall, finish carpentry, and exterior siding integration. A qualified Home Builder coordinates all trades on one schedule with documented inspection gates at framing, structural, rough-in, and final stages.
Home Builder Services Across Cape Cod and the South Shore
WM Construction offers Home Builder services across all of Cape Cod and Barnstable County, plus the South Shore. Our office and showroom is located at 1550 Falmouth Road, Suite 26, Centerville, MA 02632, with same-day site visits available across the Mid-Cape (Centerville, Hyannis, Yarmouth, Dennis, Barnstable Village, Osterville, Cotuit). Upper Cape projects (Falmouth, Mashpee, Sandwich, Bourne) typically schedule within one week. Outer Cape (Brewster, Harwich, Chatham, Orleans, Eastham) and South Shore (Plymouth, Kingston, Duxbury) projects cross the Sagamore Bridge or Bourne Bridge. Year round homeowners adding upstairs bedrooms, multigenerational households expanding for in-law living space, and lot-coverage-constrained properties going vertical instead of lateral all schedule projects through our licensed crew. Reach the office at (774) 224-8561 or visit during business hours, Monday through Friday, 8 AM to 5 PM. For broader category context, return to our Services hub.
Common Questions About Home Builder Services on Cape Cod
Yes. Every second story addition on Cape Cod requires a building permit under 780 CMR (Massachusetts State Building Code), plus separate electrical permits under 527 CMR for new circuits and plumbing permits under 248 CMR if new fixtures are added upstairs. Stamped Massachusetts Professional Engineer (P.E.) drawings must accompany the permit application. WM Construction handles all permits and inspections as part of every Home Builder contract.
Our current Home Builder scope focuses on second story additions and major structural expansion work on existing Cape Cod properties. New ground-up home construction sits outside our current service stack, but we partner with established Cape Cod home builders when full new construction scope is needed. For lateral additions and partial-footprint expansions, see our Home Additions on Cape Cod page.
Second story additions on Cape Cod typically take 10 to 16 weeks from demolition through final walkthrough, depending on size and finish complexity. Roof demolition and structural framing run 4 to 6 weeks. Mechanical rough-in, drywall, and finish work fill the remaining 6 to 10 weeks. Permit timing and structural engineering review add 2 to 4 weeks at the front.
That depends on the existing foundation capacity. Most Cape Cod homes built between 1940 and 1985 have foundations sized for single-story or 1.5-story loads, and a structural engineer must verify capacity before second story scope proceeds. Foundations that are under-spec require sistering, reinforcement, or in some cases full replacement before the new framing goes up.
Massachusetts 2024 to 2025 zoning reform opened accessory dwelling unit (ADU) construction by right on most single-family lots on Cape Cod and statewide. ADU scope sits within Home Builder work and is increasingly common as homeowners add detached or attached secondary living units of 300 to 900 square feet. Permit and zoning review processes vary by Cape Cod town.
Get Started
Explore Home Builder Options on Cape Cod
Researching a Home Builder Cape Cod homeowners can trust is a significant decision, and we respect the work of getting it right. When you call (774) 224-8561 or request a site visit, Jackeline or Marcelo will walk through your property, review structural feasibility, foundation capacity, and licensing, and schedule an onsite visit at your convenience. Our office at 1550 Falmouth Road, Suite 26, Centerville, MA 02632 has served as the base for WM Construction Home Builder services across Cape Cod since 2016. Licensed Massachusetts General Contractor with HIC registration. Call or contact us when you are ready.