At Flaherty Contracting Inc., we specialize in designing and building high-quality home additions that blend seamlessly with your existing property. As trusted home addition contractors serving Greater Boston, we create expanded living spaces that feel natural, functional, and tailored to your family’s needs. From new bedrooms and expanded kitchens to full-scale second-story additions, our team manages every stage with precision and care.
Whether you’re growing your living space for comfort, planning a multi-generational home, or simply wanting more room to enjoy everyday life, we deliver thoughtfully designed additions built to the highest craftsmanship standards. As a leading accessory dwelling unit builder, we also create ADUs and in-law suites that offer privacy, convenience, and long-term value—perfect for extended family, rental opportunities, or modern flexible living.
As specialists in Boston home expansions, we understand the structural, architectural, and zoning considerations unique to Boston’s neighborhoods. Our frame-to-finish approach ensures your addition is structurally sound, aesthetically cohesive, and fully aligned with your home’s existing character. With Flaherty Contracting, your home addition is more than extra square footage—it’s a well-integrated extension of your lifestyle.
Why Homeowners Choose Our Frame-to-Finish Addition Expertise
Seamless Integration
Additions designed to match your home’s architecture, flow, and aesthetic.
Clear, Transparent Communication
Consistent updates and guidance throughout every stage of the expansion.
Full Design & Build Coordination
One unified team handling planning, design, permitting, and construction.
On-Time, On-Budget Delivery
Clear timelines and organized project management prevent delays.
Premium Craftsmanship
Every structural and finish detail is completed with long-lasting quality.
Versatile Addition Options
From ADUs to second-story additions, we build spaces for every lifestyle.
Our Frame-to-Finish Home Addition Services Include
Site evaluation & addition feasibility
Architectural planning & design coordination
Second-story additions & full-room expansions
Garage conversions & attached additions
Accessory Dwelling Units (ADUs) & in-law suites
Kitchen & main-level expansions
Roofline modifications & exterior siding integration
Energy-efficient windows & doors installation
Mechanical, electrical & plumbing integration
Custom interior layouts & finish carpentry
Final detailing, walkthrough & turnover
As experienced home addition contractors, we ensure each expansion enhances comfort, functionality, and long-term resale value while blending beautifully with your Boston home.
Let’s Build a Space That Elevates Your Entire Home
No matter the size or scope of your project, whether you're expanding your living area, transforming outdated rooms, or reimagining your home from the ground up, our team guides you through every step with clarity and confidence. At Flaherty Contracting, we bring skilled craftsmanship, efficient project management, and trusted Greater Boston expertise to every build.
Let’s create a beautifully designed, highly functional space that enhances the way you live today and adds long-term value to your home.




Let’s Build Something Exceptional Together
Share your project details, and our team will reach out to discuss your vision, timeline, and next steps. Whether you’re planning a new custom home, an addition, or a full renovation, we’ll guide you through every stage from initial design to final walk-through. Our goal is to make the process smooth, transparent, and tailored to your needs.
Let’s turn your ideas into reality with craftsmanship, quality, and care that stand the test of time.

