Top-rated second story addition builders.

Get matched with top second story addition builders in Boulder, CO

Enter your zip and get matched with up to 3 pros

Matching on HomeAdvisor

Share some details icon
Share some details about your home project.
Match with local pros icon
Within moments, match with highly-rated local pros.
Compare quotes icon
Compare quotes and choose the best pro for the job.

Find Second story addition builders in Boulder

Avatar for Apollo Construction LLC

Apollo Construction LLC

New on HomeAdvisorNew on HomeAdvisor
Approved Pro

Apollo Construction LLC

New on HomeAdvisorNew on HomeAdvisor
Approved Pro
8 years of experience
Free onsite estimate

At Apollo Construction, we masterfully blend innovative design and exceptional craftsmanship to create stunning kitchen and bathroom remodels in Denver, solidifying our reputation as the unparalleled choice for transforming your Mile High City home.

At Apollo Construction, we masterfully blend innovative design and exceptional craftsmanship to create stunning kitchen and bathroom remodels in Denver, solidifying our reputation as the unparalleled choice for transforming your Mile High City home.


Avatar for Sentri Homes

Sentri Homes

New on HomeAdvisorNew on HomeAdvisor
Approved Pro

Sentri Homes

New on HomeAdvisorNew on HomeAdvisor
Approved Pro
1871 local quotes requested
2 years of experience

Sentri Homes is a full-service contractor delivering high-end home additions, whole-home remodels, new custom builds, luxury kitchens, structural framing, roof replacements, and every major renovation. We assign a dedicated project manager to every job, deliver meticulous craftsmanship with clear communication, and back our work with an industry-leading warranty to ensure complete peace of mind on your largest investments. Our in-house team of licensed builders and master craftsmen consistently earns 5-star reviews by turning big visions into stunning, high-value homes—when you need one trusted partner who truly does it all, we’re the proven choice.

Sentri Homes is a full-service contractor delivering high-end home additions, whole-home remodels, new custom builds, luxury kitchens, structural framing, roof replacements, and every major renovation. We assign a dedicated project manager to every job, deliver meticulous craftsmanship with clear communication, and back our work with an industry-leading warranty to ensure complete peace of mind on your largest investments. Our in-house team of licensed builders and master craftsmen consistently earns 5-star reviews by turning big visions into stunning, high-value homes—when you need one trusted partner who truly does it all, we’re the proven choice.


Avatar for Cooper Remodeling

Cooper Remodeling

5.00(
7
)

Cooper Remodeling

5.00(
7
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

We are locally owned, licensed and insured in Westminster Colorado USA. Specializing in everything remodel and new build for Residential. Cooper Remodeling Inc was started in 2017. The construction background and experience goes back to the early 90’s for the Owner. The most important thing for us is providing open communication with our clients and insuring they are aware of what is happening at all times. Preparation, Communication, and Execution are our core values. We offer a 1 year warranty on all workmanship and want you to show off our work to your friends and family for years to come.

"I would highly recommend Stud Construction. The general contractor was on the job every day, sometimes twice a day. They are experienced, reliable, see the big picture, have great ideas and approach challenges as opportunities for solutions. They constantly demonstrated integrity and persistence. They have excellent subcontractors who do painstakingly great work—on time, safety conscious and adaptable. It was a painless project and the end result is perfect."

Glenna M on February 2021

We are locally owned, licensed and insured in Westminster Colorado USA. Specializing in everything remodel and new build for Residential. Cooper Remodeling Inc was started in 2017. The construction background and experience goes back to the early 90’s for the Owner. The most important thing for us is providing open communication with our clients and insuring they are aware of what is happening at all times. Preparation, Communication, and Execution are our core values. We offer a 1 year warranty on all workmanship and want you to show off our work to your friends and family for years to come.

"I would highly recommend Stud Construction. The general contractor was on the job every day, sometimes twice a day. They are experienced, reliable, see the big picture, have great ideas and approach challenges as opportunities for solutions. They constantly demonstrated integrity and persistence. They have excellent subcontractors who do painstakingly great work—on time, safety conscious and adaptable. It was a painless project and the end result is perfect."

Glenna M on February 2021


Fine Measures Carpentry Inc.

5.00(
3
)

Fine Measures Carpentry Inc.

5.00(
3
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

I own my own small company and in doing so, it allows me to pay attention to detail and also, my customers needs. No job is too big or too small. I have the ability to pull in sub-contractors in any type job I am on to ensure that any time frame can be met. I'm an established company with referrals and pictures of my past jobs. Just tell me what you need to earn your business.

I own my own small company and in doing so, it allows me to pay attention to detail and also, my customers needs. No job is too big or too small. I have the ability to pull in sub-contractors in any type job I am on to ensure that any time frame can be met. I'm an established company with referrals and pictures of my past jobs. Just tell me what you need to earn your business.


Avatar for All Phase Construction Company, LLC

All Phase Construction Company, LLC

5.00(
1
)

All Phase Construction Company, LLC

5.00(
1
)
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

All Phase Construction Company, LLC, proudly serves Denver, Jefferson, Arapahoe and Douglas counties, offering professional services and expert installations for all your home remodeling projects. We are General Contractors and specialize in both kitchen remodeling and basements finishes, but, provide services for any residential remodeling project, whether indoor or outdoor. We are a full service company that provides everything from free initial consultation to design, engineering and plans.

All Phase Construction Company, LLC, proudly serves Denver, Jefferson, Arapahoe and Douglas counties, offering professional services and expert installations for all your home remodeling projects. We are General Contractors and specialize in both kitchen remodeling and basements finishes, but, provide services for any residential remodeling project, whether indoor or outdoor. We are a full service company that provides everything from free initial consultation to design, engineering and plans.


K&S Consulting

No reviews yet

K&S Consulting

No reviews yet
15 years of experience

I do light repair and maintenance of plumbing, electrical, drywall yard work and more for residential, mobile homes (any age) and apartments.

I do light repair and maintenance of plumbing, electrical, drywall yard work and more for residential, mobile homes (any age) and apartments.


Avatar for Two Lone Antlers, LLC

Two Lone Antlers, LLC

5.00(
3
)

Two Lone Antlers, LLC

5.00(
3
)
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

We are a full-service building and design company specializing in post frame (pole barn) structures. Two Lone Antlers is owner operated building custom residential, commercial, agricultural, and equine buildings. We also can help with repairs such as reskinning and reroofing or renovations to existing structures. Small businesses like ours sincerely appreciate each Client relationship and the trust that is placed in our team. We respect that building a structure, no matter the size or purpose, is a large investment and we aim to make this an enjoyable and efficient process. We create buildings for every need and any size. Whether you need a small storage shed, personal garage, large facility, workshops, playhouses, or full equine arena with stables- we can work with you to bring your vision to life. Owner, George Parker, personally trains and works alongside each employee to ensure the highest quality craftsmanship and customer satisfaction. Our team prides themselves on efficiency, flexibility, premium products and custom service.

"George and team were great! So refreshing to have a company do what they say they are going to do!"

peggy s on February 2022

We are a full-service building and design company specializing in post frame (pole barn) structures. Two Lone Antlers is owner operated building custom residential, commercial, agricultural, and equine buildings. We also can help with repairs such as reskinning and reroofing or renovations to existing structures. Small businesses like ours sincerely appreciate each Client relationship and the trust that is placed in our team. We respect that building a structure, no matter the size or purpose, is a large investment and we aim to make this an enjoyable and efficient process. We create buildings for every need and any size. Whether you need a small storage shed, personal garage, large facility, workshops, playhouses, or full equine arena with stables- we can work with you to bring your vision to life. Owner, George Parker, personally trains and works alongside each employee to ensure the highest quality craftsmanship and customer satisfaction. Our team prides themselves on efficiency, flexibility, premium products and custom service.

"George and team were great! So refreshing to have a company do what they say they are going to do!"

peggy s on February 2022


AC- Jack of all trades

No reviews yet

AC- Jack of all trades

No reviews yet
14 years of experience

JLG CONSTRUCTION CO

5.00(
1
)

JLG CONSTRUCTION CO

5.00(
1
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

JMJ CREATIONS

5.00(
2
)

JMJ CREATIONS

5.00(
2
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

OWNER OPERATED, DOES USE SUBS FOR FRAMING, PLUMBING, HVAC, FLOORING. DOES CHARGE A TRAVEL CHARGE, NO 24 HR SERVICE.

OWNER OPERATED, DOES USE SUBS FOR FRAMING, PLUMBING, HVAC, FLOORING. DOES CHARGE A TRAVEL CHARGE, NO 24 HR SERVICE.

...
Showing 1-10 of 1002
FAQs for second story addition building service projects in Boulder, CO

For many homeowners, building up is worth the expense because it provides the extra bedrooms or living areas that can’t be accommodated within the existing footprint. A larger, updated home often commands a higher resale price, recouping a sizable share of the project cost while allowing you to stay in the neighborhood you love. Run the numbers with a real estate agent and contractor to ensure the expected return and day-to-day benefits align with your goals.

Whether it makes more sense to build up or out depends on your lot, budget, and local code. Building up preserves yard space and involves less foundation work, but you may need to vacate the home during construction. Building out avoids staircases and can proceed while you stay put; however, it encroaches on the yard and may face setback limits. Compare both options with your contractor before making a decision.

A structural engineer will first inspect the existing foundation for cracks, footings, and load capacity. Depending on the findings, the crew may pour new concrete footings, install steel or concrete piers, add reinforced beams, or tie additional rebar into the slab. These upgrades redistribute the weight of the new floor and bring the structure up to code. Your contractor will outline the specific reinforcement plan and timeline once the engineering report is complete.

The Boulder, CO homeowners’ guide to second story addition building services

From average costs to expert advice, get all the answers you need to get your job done.