Home / Home Additions
Home Additionsin Raleigh, Cary & Apex
Holly Springs crew · 20+ years in the Triangle
More room without moving. We design, permit and build room additions, primary suites, second stories and in law suites that match the home you already love.
Plan My Addition✓ Sam walks your project himself ✓ Written, line item price ✓ Permits handled
Home additions in Raleigh, NC
Need More Space? Add On Instead of Moving
Your family grew. You work from home now. A parent may move in. And you still like your street, your school and your neighbors. Moving in Raleigh, Cary or Apex today is expensive. A home addition lets you stay put and get the room you need.
Sanderson Construction plans and builds home additions across Wake County. We're a local, licensed NC general contractor based in Holly Springs, with over 20 years of building and remodeling in the Triangle. We're not a franchise. Sam leads every project himself.
We handle the whole job: design, engineering, permits, foundation, framing, roofing, siding and every interior finish. You get one written, line item price before we start, and one team to call.
We build home additions in Raleigh, Cary, Apex, Holly Springs, Fuquay-Varina and Morrisville.
Types of additions
Home Additions We Build in the Triangle
Every lot and every house is different. These are the additions families ask us about most.
Room additions
A new bedroom, office or family room built onto your home. We handle the foundation, framing, roof and all the finishes.
- Foundation and structure
- Matching exterior finishes
- Heating, cooling and electrical tied in
Second story additions
Build up when your lot is tight. Common in older Raleigh and Cary neighborhoods with small lots.
- Structural engineering
- New staircase
- Roof changes and full upper level
Primary suite additions
A bedroom, walk in closet and private bathroom of your own, without giving up the bedrooms you have.
- Bedroom and closet
- Full bathroom
- Tile and stonework
Kitchen and dining expansions
Push out a wall to give your kitchen and dining room the space they need for real family life.
- Layout changes
- Structural work
- Full kitchen build out
Family rooms
A bigger place to gather. Great for growing families or anyone who hosts.
- Open layouts
- Built in storage
- Wiring for TV and sound
Sunrooms and enclosed porches
Enjoy Triangle weather more months of the year in a bright, climate controlled room.
- Lots of natural light
- Heating and cooling
- Easy indoor to outdoor flow
Not sure which one fits your lot? That's what the walkthrough is for.
In law suite additions
Room for a Parent or Grown Kid
A private suite, attached. An in law suite addition gives a family member their own bedroom, bathroom and sitting area, close enough to help and far enough for privacy.
Kitchen or no kitchen. Some families want a kitchenette. Others just want a bedroom and bath. Adding a full kitchen can change what your town calls the space, so we check the rules first.
Backyard cottage instead? If you want a fully separate home on your lot, read our ADU builder page. It covers Raleigh and Cary ADU rules in plain English.
What drives the price
What Changes the Cost of an Addition
We don't post starting prices for additions because no two are alike. Here's what moves the number most, so you can plan.
- Size and shape. More square feet means more foundation, framing and roof. A simple box costs less than a complex shape.
- Up or out. A second story needs engineering and roof work. A ground level addition needs more foundation.
- Plumbing. Bathrooms and kitchens cost more than bedrooms or family rooms because of water, drains and tile.
- Tying in. Matching your roofline, siding and floors takes careful work. It's what makes an addition look like it belongs.
- Permits and plans. Every addition needs plans, permits and inspections. We handle them and include them in your written price.
For more on planning, read what to know before building a home addition in Wake County.
Plan My AdditionWhat clients say
Families Who Added Space With Sam
"Sanderson did an excellent job on our home addition. They facilitated the design and implementation to exactly what we wanted, and allowed us to stay in our home while construction was underway with only minor inconveniences."
Laurie P. · Google review
"Sam and his team are top notch in my opinion. If you are looking for excellent quality and expertise to turn your vision into reality, look no further. These guys do it right."
Mike K. · Google review
"Sam (and Sanderson Construction) is a creative and thorough craftsman. He always has great solutions to any questions I have had in relation to my remodeling projects. Sam is reliable, more than competent, and very honest."
Marilyn Z. · Google review
How it works
From Walkthrough to Move In
Walkthrough and plan
Sam visits your home, looks at your lot and setbacks, and talks through what you need. Then we plan the layout with you.
Price, engineering and permits
You get a written, line item price and timeline. We handle the engineering and pull permits with your town.
Build and final walkthrough
Our crew builds and finishes the addition and keeps the site clean. Sam walks the finished space with you before we call it done.
Straight answers
Home Addition Questions
How much does a home addition cost in Raleigh?
Every addition is custom, so we don't post a starting price. Size, foundation, roof tie in, plumbing and finishes all change the number. After Sam walks your home, you get a written, line item price before any work starts.
Do I need a permit for a home addition?
Yes. Additions need building permits and inspections in Raleigh, Cary, Apex and the other Wake County towns. We pull the permits and schedule the inspections, and that work is part of your written price.
Can I live at home while you build?
Most families do. One of our Google reviewers said we let them stay in their home while construction was underway with only minor inconveniences. We'll talk through noise, access and any days you may want to be out.
Should I add on or build up?
It depends on your lot. If you have room on the ground and setbacks allow it, adding on is often simpler. On a tight lot, a second story addition may be the only way to grow. Sam will look at both on the walkthrough.
Can you build an in law suite addition?
Yes. An attached in law suite is one of the most common additions we plan. If you want a separate living space with its own kitchen, see our ADU and in law suite page for the town rules.
Will the addition match my house?
That's the goal. We match rooflines, siding, trim and flooring as closely as we can, so the new space looks like it was always there.
What about my HOA?
Many Triangle neighborhoods have HOA design rules. We ask you to check yours early, and we can help you put together what the HOA needs to review.
How do I start?
Book a walkthrough with Sam using the form on this page or call (919) 868-8958. Sam looks at your home and lot, talks through what you need and sends you a written, line item price.
Keep reading
More From Sanderson Construction
Your walkthrough with Sam
Ready to Plan Your Addition?
Tell us what kind of space you need. Sam will look at your home and lot, then send you a written, line item price.
Plan My Addition(919) 868-8958Book a Walkthrough With Sam
Tell us about your kitchen, bathroom, ADU or addition. Sam will set up a time to walk your home, then send you a written, line item price. Serving the Triangle for over 20 years.
Cary, Apex, Holly Springs, Fuquay-Varina, Morrisville & Raleigh, NC