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Home Additions & Expansions That Add Comfort and Value

When your home needs an upgrade, a thoughtfully planned addition is a smart investment. We are a design-build firm specializing in seamless home expansions, bringing construction intelligence to the design phase to ensure your new space is a perfect fit for your home.
Creative, design-focused solutions for seamless home expansions
Accurate budgeting and clear construction timelines
Expert handling of structural challenges and compliance
Tailored additions that maximize space and home value
617-515-0005
Powder House Blvd, Somerville

Expand Your Home with Genesis Construction & Development

Your home needs to evolve with your life. When you need more space, whether for a growing family, a home office, or a private suite, a well-planned addition can be a smarter investment than moving. At Genesis Construction & Development, we specialize in seamless, high-quality expansions that blend with your existing home and lifestyle. We manage the entire process and ensure full compliance with the latest regulations, including Massachusetts’ 10th Edition State Building Code, so your addition meets today’s standards for safety, energy efficiency, and structural integrity.

Our Process

At Genesis Construction & Development, we believe that exceptional results come from a clear, collaborative, and well-managed process. Whether you're building a custom home, expanding an existing property, or developing a large-scale project, we guide you every step of the way with precision, transparency, and professionalism.

Here’s what you can expect when working with us:

More Than an Addition: A Thoughtfully Designed Extension of Your Life

A home addition should solve real problems and improve how you live, not just add space. Too often, designs that look great on paper fall apart in the field. We prevent that by bringing construction insight into the design phase from day one. The result is a plan that is not only beautiful but also buildable, on time, and on budget.

Your Partner in Problem-Solving

We start by understanding your space challenges, whether it's a cramped kitchen, the need for a quiet office, or a multigenerational suite. We design to fit your lifestyle and the rules. In many Massachusetts communities, accessory dwelling units (ADUs) up to 900 square feet or 50 percent of your home's size can be added without a special permit. We help you navigate these options and ensure your plan is the right one for your goals.

The Genesis Design-Build Advantage 

With Genesis Construction & Development, you get a single, accountable partner from the first sketch to the final walkthrough. Our team builds faster than the typical four- to six-month timeline without cutting corners. Integrated planning and consistent communication mean fewer delays, smarter decisions, and a smoother process. You stay focused on your life while we handle the rest.

Let’s Talk About Your Project

Whether you're just getting started or already have plans in hand, we're here to help you move forward with clarity. Fill out the form below and our experienced team will reach out to discuss your goals, your timeline, and how we can help bring it all together:
617-515-0005

What Our Clients Are Saying

  • “Professional, efficient, and detail-oriented.”

    We couldn’t be happier with our custom home. The team at Genesis delivered exceptional quality and kept us informed every step of the way. They made what could’ve been a stressful process feel seamless.
    Reading, MA
  • “They built our dream home and nailed every detail.”

    From the design phase to final finishes, Genesis Construction exceeded our expectations. Their craftsmanship and professionalism were unmatched. Highly recommend!
    Cape Cod, MA
  • “Trustworthy, transparent, and talented.”

    Genesis handled our full renovation with incredible attention to detail and open communication. We always felt like our project was in the right hands.
    Cape Code, MA
  • “A smooth experience from start to finish.”

    This team knows construction. They were responsive, respectful of our space, and delivered a high-end result. We’ll definitely work with them again.
    Everett, MA
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About Your Project

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Our Home Addition & Expansion Services

We specialize in a range of custom home additions, each designed and built with meticulous attention to detail and a deep understanding of Massachusetts architecture. Our expertise ensures your new space feels like it was always part of your home.

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Why Choose Us

Genesis Construction and Development Inc. starts every project with a comprehensive blueprint that aligns design, construction, and cost. This upfront clarity minimizes surprises, streamlines decision-making, and sets the tone for a well-managed build.

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Meticulous upfront planning that reduces rework, change orders, and delays

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Expert navigation of zoning, permitting, and code compliance across Essex and Middlesex counties

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Full project oversight from early design to final walkthrough

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Trusted by homeowners, architects, and investors for consistent results

Choosing us means choosing one of the top general contractors in the region—committed to quality, transparency, and long-term value.
Featured Projects

See What We’ve Built Together

Every project starts with a conversation and is shaped by our client’s goals. We bring structure, foresight, and clear communication to each step of the process. Our portfolio reflects not just what we build, but how we build, with consistency, care, and lasting results. As a seasoned building construction company, we understand what it takes to deliver value and craftsmanship at every scale.

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Frequently asked questions

Do I need planning permission for an extension?

Most home extensions in North Shore, MA, require planning permission if they exceed specific size or height limits, alter the existing structure significantly, or impact neighboring properties. Always check with your local building authority to confirm regulations before starting your project.

Do I need an architect to draw up plans for an extension?

While it’s not legally required to hire an architect, working with one ensures accurate plans that meet building codes. Architects can also help optimize design and functionality, which can prevent costly mistakes during construction.

Is it cheaper to build a house or add an addition?

Adding an extension is typically more cost-effective than building a new home because it leverages the existing foundation, structure, and utility connections. In Massachusetts, home additions currently cost between $350 and $450 per square foot, depending on the design complexity and materials. While additions are generally less expensive, large or multi-story expansions can approach the cost of new construction.

What's the biggest extension you can have without planning permission?

In most cases, you can build a single-story extension within size limits set by local zoning regulations—typically a modest increase in square footage. Check North Shore’s zoning rules to ensure compliance before starting work.

Can you draw your own house plans without an architect?

Yes, you can draw your own house plans, especially for small projects. However, they must meet local building codes and be clear enough for contractors to follow. Professional assistance is recommended for larger or complex designs.

Let’s Talk About Your Next Build

Whether you're just exploring ideas or preparing to move forward, we're here to help you take the next step with clarity. Share a few details about your project or give us a call to speak directly with a member of our team. We’re here to listen, guide, and build the right plan with you.
617-515-0005

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