In Star and across the Treasure Valley, Comfort Expert Builders adds space to the home you already have. We build second stories, bedroom suites, rooms over the garage, garage conversions, bump-outs and bigger living rooms. When your kitchen or layout needs to change to fit the new space, we remodel it as part of the same project. Call (208) 991-8068 for a free estimate.
Moving is expensive, and it means leaving a neighborhood you like. An addition gives you the room you need right where you are.
On this page you’ll find the kinds of additions we build, how the process works and what to expect. Every project starts with a free estimate and a visit to your home. We look at your lot, your house and how your family lives. Then we plan the new space so it fits the home, the lot and the budget.
Most families can stay in the home while we build. We work with you on a schedule that keeps daily life as normal as possible.
A home addition adds new square footage to your house. It might be one new room or a whole new wing. We match the new work to your existing roofline, siding and windows, so it looks built in, not bolted on.
This is the core of what we do. Families add on for a new baby, a parent moving in, a home office or just more room to breathe. Whatever the reason, we plan the addition around how you’ll use it every day.
When your lot is tight, building up can make more sense than building out. A second story can add bedrooms, a bathroom or a family room without giving up your yard.
A second story puts new weight on the home you have. So we plan the framing and structure to carry it safely, and we tie the new floor into the old one cleanly. We also plan the stairs so they fit the way you move through the house.
A bedroom suite gives someone their own space: a bedroom, a bathroom and sometimes a small sitting area. It works well for a parent moving in, a grown child coming home or guests who stay a while.
We plan the suite so it has privacy and still connects to the rest of the house. If you’d rather have a fully separate home on your lot, take a look at our ADUs instead.
Your garage already has a slab, walls and a roof. That makes it a strong starting point for new living space. We can convert it into a bedroom, an office or a family room. Or we can build a new room on top of it.
One family had us build an addition of about 1,400 sq ft above their garage. Building over the garage adds space without taking up more of your yard. If you still need the parking, we can plan a new detached garage too.
Sometimes a room is just a little too small. A bump-out pushes one wall out a few feet to make a living room, dining area or kitchen roomier. A living room addition goes further and adds a whole new gathering space.
We don’t take on kitchen remodels by themselves. But when your addition connects to the kitchen, we update it as part of the job. The plumbing, electrical, cabinets and layout all get planned together, so the work isn’t done twice.
Some additions are about how you want to spend your day. A sunroom brings in light and a view of your yard. A home office gives you a quiet place to work, away from the busy parts of the house. A guest suite makes visits easier for everyone.
Each one gets the same care: framing, insulation, heat and finishes that match the rest of your home.
An addition often changes how the rest of the house flows. Once the new room is in, the old layout may not make sense anymore.
When that happens, we plan the remodel and the addition as one project. Walls can move, rooms can change purpose, and the new and old spaces can connect the way they should. We don’t do standalone kitchen or bathroom remodels. We remodel when it’s part of a bigger plan that adds space to your home.
A little planning up front makes the whole project smoother. Before we draw anything, we’ll talk through a few questions with you:
Your answers shape the design, the plan and the estimate. There are no wrong answers, and we’ll help you think each one through.
An addition changes your home’s footprint, so it almost always needs a building permit. Each city sets its own process. For example, Caldwell has a separate residential addition permit packet, and Boise has its own permit type for residential additions and alterations. Outside city limits, the county handles it.
We check the setback and zoning rules for your lot early, before design is final. Then we pull the permits and work with the inspectors through the build. If you’re in an HOA, we’ll help you get their approval too.
Older homes in established Boise or Eagle neighborhoods often need more structural matching than newer homes in Star or Middleton. We plan for that up front, so there are no surprises once the walls open.
You work directly with the owner the whole way, not a sales rep or a string of subcontractors.
We’re based in Star. We build additions in Star, Boise, Eagle, Meridian, Nampa, Caldwell, Emmett, Kuna and Middleton.
See the areas we serve: Star, Boise, Eagle, Meridian, Nampa, Caldwell, Emmett, Kuna, Middleton.
Additions are one part of our work. We also build custom homes, ADUs, shops and garages. Get to know our full-service construction company in Star.
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Arturo DavilaTrustindex verifies that the original source of the review is Google.
Alex came in and did exactly what he said in a timely manner, his employee was excellent and very professional, I would highly recommend them and will definitely use them in the future.Posted on Google![]()
Cora WayenbergTrustindex verifies that the original source of the review is Google.
First time doing any kind of construction and an ADU above our garage was quite the experience! Alex was good at letting us know each step of the way. We had a hiccup with cabinets....but even with that delay, project was done within a week of when he said it would b done! I've been told, in the construction world, that's miracle! He worked with us to keep us within our budget....even assisting on some areas so it would b amazing! I loved that he didn't "nickle & dime" us to death!! Anything extra needed was carefully shared & explained. The finished product is so much more than we could have hoped for & admired by all who view it! Thank you Alex & CEB!!Posted on Google![]()
Evy LobkovTrustindex verifies that the original source of the review is Google.
did a great job with our house remodel!! very professional and made sure we got what we wanted. would recommendPosted on Google![]()
Reagan OlsonTrustindex verifies that the original source of the review is Google.
We recently had the pleasure of working with Alex from Comfort Expert Builders, who completed a ~1400SQ FT addition above our garage. From start to finish, Alex was great to work with. He was professional, approachable, and always ready to address any questions or concerns. His team moved quickly and completed our project in an impressive 3-months! Throughout the project, Alex maintained excellent communication, keeping us informed of progress and any potential issues. The construction estimate was accurate, and there were no unexpected costs or surprises. His level of honesty and reliability is rare and highly appreciated. Overall, I would highly recommend Comfort Expert Builders for any home construction projects.Posted on Google![]()
Zach ReddTrustindex verifies that the original source of the review is Google.
Comfort Expert Builders, is a great business partner of ours in the treasure valley. As a Business owner myself, I appreciate good communication, reliability, and expertise is ones field. That’s exactly what you get with Alex and his team. I highly recommend them to anyone building in the area.Posted on Google![]()
olga derbisTrustindex verifies that the original source of the review is Google.
Alex and his team have been a pleasure to work with! First of all, always easy to communicate with, and responding in a timely fashion. We always felt comfortable asking questions, and if a change in the plan was needed, they were accommodating and patient. And secondly, very professional and work quality speaks for itself. Would definitely recommend to friends and family!
The cost depends on the size, the type of addition and how finished the space is. A bump-out costs less than a second story. We give you a clear estimate after we see your home and learn what you need.
It depends on the size of the addition, the permit timeline and the weather. We give you a timeline for your project during planning and keep you updated as we go.
Yes, most families can. We plan the work and the schedule with you so daily life stays as normal as possible.
An addition adds square footage and usable space. How much value it adds depends on your home, your neighborhood and the market. A local real estate agent can give you the best read.
Many homeowners use savings, a home equity loan or a refinance. Talk with your lender about what fits. We’ll give you a clear estimate you can take to them.
No. We remodel kitchens and baths when they’re part of an addition or a larger project that adds space to your home.
In almost every case, yes. We pull the permits and work with the inspectors for you.
Ready for more room? Call (208) 991-8068 or fill out the form. Tell us about your home and what you’d like to add. We’ll set up a time to come take a look.