Humarock is one of the most demanding coastal build environments on the South Shore — flood zones, wind exposure, septic constraints, and a tightly clustered street grid. Mike has built multiple modular homes here (including the Keogh build on driven piles) and brings the same coastal expertise to every ADU project.
For families in Humarock looking to bring aging parents home, add rental income, or carve out a serious home office without leaving the property, modular ADUs are the fastest, most predictable way to add livable square footage. Same factory-built quality as a full custom modular home — just compressed into 400–900 square feet.
Building in Humarock (Humarock Beach, Sea Street, Central Avenue, Marshfield Avenue, and the rest) means working through Humarock's specific permitting, septic, and zoning rules. Mike has been doing exactly that for 40+ years. He confirms by-right eligibility, setbacks, and septic capacity during your free site walk — before plans are drawn, before contracts are signed, before you're financially committed.
Pricing is identical to our full modular homes: $250 per square foot, locked in writing before groundbreaking. A 600 sq ft ADU is approximately $150,000. A 900 sq ft ADU is approximately $225,000. Turnkey — design, permits, factory build, foundation, crane set, finish work, final inspection.
"Every Humarock ADU project starts with a site walk. Before plans, before pricing, before anything else — I want to stand on your lot and confirm what's actually buildable. That step alone saves families months of wasted design fees on projects that wouldn't have cleared Humarock's rules."
Same shell, very different lives inside. The best ADU is the one designed around what your family actually needs — not a generic template.
Bring aging parents home without giving up privacy on either side. Single-floor layouts with wider doorways, walk-in showers, and zero stairs — designed for aging in place from day one.
Humarock has strong long-term rental demand for well-designed ADUs. Coastal towns command premiums on short-term platforms during summer. Many owners use rental income to recover a meaningful portion of their build cost.
A real, separated workspace — not a corner of the dining room. Insulated, climate-controlled, hard-wired internet. Walk across the yard, close the door, do the work.
Visiting family. College kids home for summer. Friends in town. A proper guest house means your main home stays your main home — no fold-out couches, no shared bathrooms.
For families whose adult kids are saving for a first home or finishing graduate school. Privacy for both households without the cost of separate housing during a transitional season.
A permitted, code-compliant ADU adds documented square footage and a separate income stream — both of which appraise. Well-designed ADUs typically support and grow your Humarock property's resale value.