New Construction & Additions in Boston
Build a new building or add to an existing property with Beantown Builders, a full-service design-build firm in Boston, MA. Our integrated design-build process keeps your project seamless, from first sketch to final finish, with one accountable team guiding every step.
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Design-Build Services for Mixed-Use Properties & Whole-Home Expansions
Looking for a trusted Boston design-build company for a new construction project or home addition? Our high-performance renovation and construction team manages everything from architectural plans to final inspections.
Whether you’re building a mixed-use property or expanding your home, Beantown Builders delivers energy-efficient, durable and code-compliant results with a streamlined, start-to-finish process. We serve commercial and residential clients in Boston.
What Makes Beantown Builders Different
Integrated Design-Build Process
We handle everything under one roof — from design and permitting to construction and final finishes.
That means one contract, one team, and total accountability from start to finish.
3D Visualization and Pre-Construction Clarity
Every project begins with a detailed design and 3D rendering, so clients can see their finished space before construction starts. This eliminates uncertainty, reduces change orders, and builds trust early.
Performance Modernization
We don’t just make homes look new; we make them perform better. That means improved efficiency, smarter layouts, better ventilation, and long-term durability built into every project.
Licensed, Certified, and Code-Focused Expertise
We bring deep construction knowledge. Our team includes licensed builders, lead-safe renovators, and design professionals who ensure every project passes inspection the first time.
Compassion-Driven Construction
We lead with empathy. Home remodeling can be stressful, and our process is built around communication, respect, and transparency. We take the time to understand each client’s situation and goals before building.
Proven Track Record Across Project Scales
From single bathrooms to multi-unit rehabs and full additions, we have decades of experience in managing complex residential and light commercial projects — on time and within budget.
Local Roots, Boston Grit
We’re a Boston-born company built on craftsmanship, honesty, and blue-collar pride. We embrace the city’s history — restoring it, modernizing it, and building what comes next.
Seamless Communication and Technology Integration
We use modern tools to keep clients and teams in sync — real-time updates, photos, and progress tracking all available to you online or on your mobile so you are always informed.
Boston New Construction Services
We provide complete new construction services for mixed-use and residential properties across Greater Boston. Our design-build model keeps your project on schedule, within budget and aligned with Massachusetts building requirements.
Pre-Construction Planning
Our team handles early planning, budgeting and permitting to eliminate delays. With deep knowledge of Boston zoning, energy codes and mixed-use building regulations, we secure all required permits and create a clear project roadmap.
Construction Management
Once construction begins, our local project managers coordinate every trade and maintain strict quality control. We quickly resolve unexpected challenges and keep you updated throughout the build.
Our construction management includes:
- Timeline and progress reporting
- Quality and cost control
- Subcontractor coordination
- On-site supervision
- Job safety oversight
- Final inspections and walkthroughs
- Full Design & Build Support
Our integrated architecture and interior design services help you shape a high-performing, functional layout. Whether you are planning a mixed-use development or a residential new build, we create efficient, code-compliant designs that optimize space and long-term property value.
Home Additions in the Boston Area
If you love your neighborhood but need more space, a home addition is a smart way to expand without relocating. As one of the leading home addition contractors in Greater Boston, we design and build additions that improve comfort, functionality and efficiency.
We build all types of home additions, including:
- Bedroom and primary suite additions
- Primary bathrooms
- Guest and in-law suites
- Home gyms
- Three-season rooms
- Family rooms and bonus rooms
- Open-concept kitchen additions
- Garage conversions
- Basement finishing
- Triple-decker porches
Our architectural team handles major structural changes, while our interior designers help you maximize the layout and aesthetic. We plan the project to minimize disruption and deliver a smooth experience.
Multi-Family Unit Conversions
As Boston’s housing demand grows, converting single-family homes into multi-family units has become one of the smartest ways to increase property value and create additional revenue streams.
Our design-build team specializes in multi-family additions, down-to-the-studs renovations and complete unit conversions that meet modern building codes, fire-safety requirements and energy-efficiency standards.
Whether you want to add an entirely new unit, expand an existing layout or reconfigure the building’s floorplan for better rental flow, Beantown Builders delivers a fully engineered, code-compliant solution.
Our services include:
- New layouts and unit configurations
- Updated kitchens and baths
- Energy-efficient upgrades
- Modern finishes designed for long-term durability
FAQs
What specialized additions do you offer?
Our team delivers high-performance specialty additions that expand your living space while maintaining the structural integrity and architectural style of your Boston home. Our services include:
Second-Story Additions
For homeowners who need significant square footage without expanding the footprint, a second-story addition is an ideal solution. These projects require detailed engineering, careful roof removal and fast enclosure to protect the home from New England weather. Our design-build team coordinates each phase, ensuring the new level is structurally sound, energy efficient and seamlessly integrated with the existing home.
Master Suite Additions
If you want more comfort and privacy, we design and build custom primary suites with walk-in closets, spa-style bathrooms and high-efficiency layouts. Whether we extend your home or reconfigure unused rooms, we create a personalized retreat that adds everyday luxury and long-term resale value.
Guest & In-Law Suites
Guest suites and in-law suites provide flexible living options for long-term guests, aging parents or potential rental income. We design private, functional suites that blend naturally with your existing layout, handling everything from architectural planning to finishes that feel cohesive with the rest of the home.
From second-story expansions to master suites and multi-use guest spaces, we deliver additions that enhance both livability and long-term value.
Do you handle both residential and commercial new builds?
Yes. Our design-build team manages both residential and commercial new construction projects throughout the Greater Boston area. We have the experience, licensing and in-house capabilities to complete everything from custom homes and multi-family buildings to mixed-use developments and light commercial spaces. Because we operate as a full-service design-build firm, we streamline every phase of the process, including architectural planning, permitting, energy-efficient engineering, structural work and final construction.
For residential clients, we build high-performance homes that prioritize comfort, durability and long-term value. Whether it’s a ground-up single-family home, a major addition or a multi-unit property, our team creates layouts that maximize natural light, energy efficiency and modern functionality.
For commercial and mixed-use clients, we manage zoning research, code compliance and the complex coordination required for multi-trade commercial construction. Our experience with Boston’s permitting environment allows us to anticipate challenges early, prevent delays and maintain predictable project timelines.
No matter the size or scope, we bring the same level of communication, craftsmanship and project oversight to every new build. This makes us a trusted partner for homeowners, developers and business owners who want a smooth, well-managed construction experience from concept to completion.
How long does a typical new construction project take in Boston?
The timeline for a new construction project depends on size, complexity and permitting requirements. On average, a single-family new build takes 9 to 12 months, while multi-family or mixed-use developments may take 12 to 18 months or longer. Our pre-construction planning phase ensures realistic schedules are created upfront, and our on-site project management keeps construction moving efficiently to minimize delays while maintaining quality and safety.
Do I need a permit for a home addition in Boston?
Yes, home additions require permits and must comply with local zoning laws. We handle all permitting to ensure a smooth process.
Do you provide design services for home additions and new builds?
Yes. Our design-build approach combines architecture, interior design and construction under one roof. For home additions, we create layouts that maximize space, light and energy efficiency. For new construction, we provide full architectural and interior design services that ensure code compliance, aesthetic appeal and functional flow. This integrated approach reduces errors, speeds up construction, and helps you visualize your project before the first nail is driven.
Can you handle multi-family renovations and unit conversions?
Absolutely. We specialize in multi-family additions, unit conversions and complete renovations for residential and mixed-use buildings. From reconfiguring layouts to adding kitchens, bathrooms and separate entrances, we ensure every unit meets building codes, zoning requirements, and modern energy-efficiency standards. These renovations increase rental potential and long-term property value, all while providing comfortable, functional living spaces.
