Built to Elevate. Forged to Endure.

Home Additions in Cary, NC

Custom additions for Cary’s established homes, from Preston and MacGregor Downs to Amberly, crafted to look like they were always there.

Your Cary Home Addition Contractor for Space That Matches and Lasts

Forge Construction Group builds custom home additions in Cary, NC, from second stories and in-law suites to whole-home expansions, as a licensed North Carolina general contractor (License #102873). Every addition is engineered to match your home’s structure and style, managed by one accountable team, and built to the standard Cary’s established neighborhoods expect.

Is a Second-Story Addition Right for Your Cary Home?

Building up is often the smartest way to gain square footage in Cary’s established neighborhoods, where lots are defined and setbacks are tight. A second-story addition can double your living space without touching the yard, and done right it looks original to the house: rooflines continued, windows aligned, materials matched. Forge engineers the structure from the foundation up, manages framing, systems, and finish, and keeps your household functioning through the build. Explore our second-story additions.

Home addition framing under construction by Forge Construction Group
Bedroom with a high vaulted ceiling

In-Law Suites & ADUs in Cary

An in-law suite or accessory dwelling unit is one of the highest-value additions a Cary homeowner can build, whether for family or long-term flexibility near the SAS and Research Triangle Park tech corridor. Forge builds attached and detached suites, handling Wake County setbacks, HOA requirements, and code so your project is compliant and inspection-ready. Explore our ADUs and in-law suites.

Whole-Home Additions & Renovations in Cary

When a Cary home needs more than a single room, Forge manages the full transformation: additions, reconfigured layouts, updated systems, and finishes, planned as one project instead of a chain of disconnected trades. That is how a 1990s floor plan becomes a home that works for the next twenty years, without the compromises that creep in when nobody owns the whole picture. Explore our whole-home renovations.

Custom built-ins around a modern linear fireplace

Looking for a Custom Home Addition?

Forge Construction Group specializes in elevating and protecting homes with expert craftsmanship across interior and exterior projects. From renovations and repairs to custom builds, we deliver quality solutions that enhance both the beauty and durability of your home.

Three-season room with panoramic windows and cozy seating

Room Additions & Bump-Outs in Cary

Not every addition is a wing. A room addition, a larger primary suite, an expanded kitchen, or a first-floor office can transform how a Cary home lives. Forge builds room additions and bump-outs with the same structural rigor as our largest projects, tied seamlessly into your roofline, siding, and interior.

How Much Does a Home Addition Cost in Cary?

Forge focuses on substantial, high-craft additions, and most of our Cary projects fall in the $250,000-and-up range. Actual investment depends on type, size, and finish level:

  • Room additions & bump-outs: from around $75,000
  • In-law suites & ADUs: from around $150,000
  • Second-story additions: from around $200,000
  • Whole-home additions & renovations: from around $300,000

As a benchmark, Triangle additions run $150 to $400 per square foot, and Wake County permitting and HOA review can add to the timeline. Forge provides a detailed, fixed scope after a design consultation.

Forge Construction Group branded trailer and work truck

Our Seamless Project Management Process

At Forge Construction Group, we ensure every project is expertly managed from start to finish, delivering quality results with a focus on clear communication and efficiency.

Step 1
Step 2
Step 3
Step 4

Let’s Start The Conversation – Ask An Expert!

Your home is likely your largest investment, and an addition should protect it, not gamble with it. Tell us what you are envisioning for your Cary home, and we will show you how Forge builds it right.

Forge Construction FAQs

Additions are priced by scope: size, whether you build out or up, foundation work, and finish level. Forge focuses on substantial, high-craft projects and provides a detailed, fixed scope after an on-site consultation, so you know the full investment before anything begins.

Almost always both. Cary permitting is thorough, and most established neighborhoods add HOA architectural review on top. Forge manages the full process, plans, permits, HOA submittals, and inspections, so your addition is approved and compliant from footing to final.

Most Cary additions run two to four months from groundbreaking to completion depending on size, foundation, and finish. Forge sets a clear schedule during planning, manages every trade in-house, and keeps your household functioning through the build.

That is the core of how Forge designs. Rooflines, siding, windows, and proportions are matched so the addition reads as original to the house, which matters both for daily living and for resale in Cary’s established neighborhoods.

Room additions and bump-outs, second-story additions, in-law suites and ADUs, sunrooms, and whole-home expansions across Cary. Each is engineered, permitted, and built by one accountable team from architectural planning through finish.

Often, yes. With Cary’s home values and the cost of trading up, a well-built addition frequently delivers more usable space per dollar, and lets you keep the neighborhood, schools, and commute you already chose.

Yes. Forge Construction Group is a licensed North Carolina general contractor (License #102873) and fully insured. Your addition is engineered properly, inspected at every stage, and managed by a single accountable team.