EXPAND YOUR SPACE, BUILT TO MATCH
Home additions and deck builds that seamlessly match your existing structure. Pergolas, expansions, and custom outdoor spaces done right, on Cape Cod.
Additions & Decks
Whether you need more living space inside or a better outdoor experience, Mussato Building Group designs and builds additions and decks that integrate seamlessly with your existing home. Every addition is engineered and constructed to match your home's existing structure, style, and quality.
Get a Free Quote- Room additions & second-floor additions
- Garage additions & conversions
- Sunrooms & enclosed porches
- Custom deck construction
- Pergolas & outdoor structures
- Structural integration with existing home
- Permit coordination & code compliance
- Matching materials & finishes
Our Process
Site Assessment
We evaluate your existing structure, zoning requirements, and how the addition will integrate with your home.
Design & Permits
Drawings, engineer review, and permit acquisition, we handle it all before any work begins.
Foundation & Framing
Structural work executed to code, with attention to how the new structure connects to the existing one.
Finishing
Interior and exterior finishes matched to your existing home, right through to the final detail.
The People Behind It
Meet the Team
Joe Mussato
Founder & Owner
With more than 20 years in the trade, Joe personally oversees every project from pre-construction planning through to final finish. Integrity, craftsmanship, and clear communication on every build.
Karol Vieira
Lead Architect, Soulveplus
As Lead Architect at Soulveplus, Karol guides each residential and commercial project through a complete workflow, from design and planning to build execution and final finishes, with clear scope, timeline, and communication. She coordinates permitting and zoning to help clients avoid delays, rework, and costly surprises, pairing American standards of execution with practical, value-driven decisions. Working with property investors to modernize older homes for resale or rental, she builds with ROI, comfort, and lasting value in mind.
On The Job
Our Team at Work
Tell Us About Your Project
© 2026 Mussato Building Group Inc. All rights reserved. Yarmouth, MA, Serving Cape Cod.