Top-rated addition to existing structure builders.

Get matched with top addition to existing structure builders in University City, MO

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 Addition to existing structure builders in University City

Pernikoff Construction Company

8143 Olive Boulevard
4.50(
2
)
Approved Pro

Pernikoff Construction Company

8143 Olive Boulevard
4.50(
2
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
75 years of experience

We are a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. We have many years of experience to give you confidence that we are your number one choice for your next home project. You will find us to be competitively priced with close attention to the details of each and every project that we are involved with. We look forward to building lasting relationships and guarantee your satisfaction!

"This company was great, they manage their resources very well and get stuff done."

Donnell W on December 2021

We are a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. We have many years of experience to give you confidence that we are your number one choice for your next home project. You will find us to be competitively priced with close attention to the details of each and every project that we are involved with. We look forward to building lasting relationships and guarantee your satisfaction!

"This company was great, they manage their resources very well and get stuff done."

Donnell W on December 2021


Avatar for Swenson Builders LLC

Swenson Builders LLC

117 S. Lexington St. Suite #300
5.00(
2
)
Approved Pro

Swenson Builders LLC

117 S. Lexington St. Suite #300
5.00(
2
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
3 years of experience

Here at Swenson Builders LLC we are family owned & operated with over 17 years of experience. We take great pride in our expertise, quality, and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction, from the start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every client in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job we will treat your home as we would treat our own. Give Swenson Builders LLC a call today, We look forward to working with you!

"I had Swenson Builders build custom shelving in my garage. They turned out great and the job was done professionally and efficiently. Very happy with the storage spaced added."

Michelle C on August 2022

Here at Swenson Builders LLC we are family owned & operated with over 17 years of experience. We take great pride in our expertise, quality, and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction, from the start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every client in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job we will treat your home as we would treat our own. Give Swenson Builders LLC a call today, We look forward to working with you!

"I had Swenson Builders build custom shelving in my garage. They turned out great and the job was done professionally and efficiently. Very happy with the storage spaced added."

Michelle C on August 2022


"We have been completely satisfied and impressed with the planning and subsequent work provided by Power 2 Construction! They truly listened to every question, concern, and vision I had for our project. They were polite and conscientious throughout, the subcontractors they hired for the project above par. We never felt uneasy with anyone that entered our home. The end result is absolutely gorgeous and exceeded my own expectations! We will be pursuing a second phase to our project and look forward to working with Power 2 Construction through completion!"

Tammy B on May 2025

Transform your home with Power 2 Construction & Remodeling. Our expert team in St. Louis specializes in remodeling and excavating, delivering top-notch service and exceptional results. Contact us today to bring your home projects to life.

"We have been completely satisfied and impressed with the planning and subsequent work provided by Power 2 Construction! They truly listened to every question, concern, and vision I had for our project. They were polite and conscientious throughout, the subcontractors they hired for the project above par. We never felt uneasy with anyone that entered our home. The end result is absolutely gorgeous and exceeded my own expectations! We will be pursuing a second phase to our project and look forward to working with Power 2 Construction through completion!"

Tammy B on May 2025


Avatar for RBM Construction

RBM Construction

306 Woodmere Dr
4.93(
7
)
Approved Pro

RBM Construction

306 Woodmere Dr
4.93(
7
)
Approved Pro
Customers say: Quality work
39 years of experience
Free onsite estimate

As a family-owned business with decades of experience serving the St. Louis area, we specialize in delivering high-quality home remodels that reflect your unique vision. We’re proud to be the parent company of Timber Classic Cabinetry, expanding our services beyond custom cabinetry solutions you already trust. RBM Construction is here to provide exceptional craftsmanship and personalized service every step of the way.

"Excellent work. My new patio was installed better than I would have hoped. Installed on time at reasonable cost."

Robert M on December 2021

As a family-owned business with decades of experience serving the St. Louis area, we specialize in delivering high-quality home remodels that reflect your unique vision. We’re proud to be the parent company of Timber Classic Cabinetry, expanding our services beyond custom cabinetry solutions you already trust. RBM Construction is here to provide exceptional craftsmanship and personalized service every step of the way.

"Excellent work. My new patio was installed better than I would have hoped. Installed on time at reasonable cost."

Robert M on December 2021


Birkenmeier & Sons Inc

1325 Hillsboro Rd
4.99(
139
)
Approved Pro

Birkenmeier & Sons Inc

1325 Hillsboro Rd
4.99(
139
)
Approved Pro
Super Service Award
Customers say: Super punctual
Recommended by 99% of Angi customers
Recommended by 99% of HomeAdvisor customers
60 local quotes requested

Hello, my name is Al Birkenmeier, I am president of Birkenmeier and Sons, Inc.. So grateful for Angie's List and the Super Service Award 11 years in a row. I started my custom building and remodeling company in 1980 after 9 years in the commercial construction industry working with companies like McCarthy Bros., Hercules and Tarlton. I have pursued my love of providing the highest quality of construction while working hard at keeping my overhead down to keep it as affordable as possible. The proof is always in what my past has to offer so please don't hesitate to contact my past clients through a client reference list I would be happy to share with you as 99.9% are not Angie's List Members. Our quality of work and service is second to none so please let us offer you a no cost estimate and opinion for your next custom home or remodeling project. Thank you much, Al Birkenmeier

"Al, I think I've said it before, but I want to tell you again. Thank you for your team's dedication, effort, persistence and kindness throughout our project. Your team was great to work with and we feel very fortunate to have them as the ones who were coming into our house daily for months. It made the process smooth and enjoyable! Bob and Johnny were great to work with and so kind to us and our kids. And the rest of the guys were great for the brief time they were there. It was a true blessing for us during this transition. And thank you for the excellent work and follow through! I am proud to tell folks about Birkenmeier and Sons doing our big project and will refer anyone to you, even if you may not need the referrals 😁. Thank you again for the great work and take care of you! Stacie and Eric"

Stacie R on October 2025

Hello, my name is Al Birkenmeier, I am president of Birkenmeier and Sons, Inc.. So grateful for Angie's List and the Super Service Award 11 years in a row. I started my custom building and remodeling company in 1980 after 9 years in the commercial construction industry working with companies like McCarthy Bros., Hercules and Tarlton. I have pursued my love of providing the highest quality of construction while working hard at keeping my overhead down to keep it as affordable as possible. The proof is always in what my past has to offer so please don't hesitate to contact my past clients through a client reference list I would be happy to share with you as 99.9% are not Angie's List Members. Our quality of work and service is second to none so please let us offer you a no cost estimate and opinion for your next custom home or remodeling project. Thank you much, Al Birkenmeier

"Al, I think I've said it before, but I want to tell you again. Thank you for your team's dedication, effort, persistence and kindness throughout our project. Your team was great to work with and we feel very fortunate to have them as the ones who were coming into our house daily for months. It made the process smooth and enjoyable! Bob and Johnny were great to work with and so kind to us and our kids. And the rest of the guys were great for the brief time they were there. It was a true blessing for us during this transition. And thank you for the excellent work and follow through! I am proud to tell folks about Birkenmeier and Sons doing our big project and will refer anyone to you, even if you may not need the referrals 😁. Thank you again for the great work and take care of you! Stacie and Eric"

Stacie R on October 2025


MJ Buildings

4001 Highway P
5.00(
4
)
Approved Pro

MJ Buildings

4001 Highway P
5.00(
4
)
Approved Pro
Super Service Award
Customers say: Quick response
17 local quotes requested
14 years of experience

We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business! Book with us online or feel free to give us a call today!

"Very nice guys and willing to work with you. Photos coming soon"

Robin B on February 2025

We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business! Book with us online or feel free to give us a call today!

"Very nice guys and willing to work with you. Photos coming soon"

Robin B on February 2025


Smull General Contracting, LLC

967 Forest Square Drive
5.00(
3
)
Approved Pro

Smull General Contracting, LLC

967 Forest Square Drive
5.00(
3
)
Approved Pro
3 years of experience
Free onsite estimate

Smull General Contracting LLC with 40 years of experience is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.

"Kevin and his team of seasoned professionals did an outstanding job thru every step of the comprehensive remodel. Time to completion was carefully managed including promptly dealing with punch list items at the end. Quick to return phone calls and kept a clean job site. Knowledgeable about available resources in area also."

katherine b on August 2025

Smull General Contracting LLC with 40 years of experience is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.

"Kevin and his team of seasoned professionals did an outstanding job thru every step of the comprehensive remodel. Time to completion was carefully managed including promptly dealing with punch list items at the end. Quick to return phone calls and kept a clean job site. Knowledgeable about available resources in area also."

katherine b on August 2025


Avatar for RDB CONSTRUCTION LLC

RDB CONSTRUCTION LLC

1600 Lakeview Drive
New on HomeAdvisorNew on HomeAdvisor
Approved Pro

RDB CONSTRUCTION LLC

1600 Lakeview Drive
New on HomeAdvisorNew on HomeAdvisor
Approved Pro
2025 years of experience
Free onsite estimate

As 30+ years experience carpenters, we are always prepared to take on your projects with precision and care. We pride ourselves on being courteous and polite, ensuring a positive experience from start to finish. Our approach involves actively listening to your needs and preferences to deliver tailored solutions. ???? We understand the importance of clear communication and collaboration to bring your vision to life. From the initial consultation to the final touches, We are dedicated to providing exceptional craftsmanship. ? We are ready to start, so contact me today.

As 30+ years experience carpenters, we are always prepared to take on your projects with precision and care. We pride ourselves on being courteous and polite, ensuring a positive experience from start to finish. Our approach involves actively listening to your needs and preferences to deliver tailored solutions. ???? We understand the importance of clear communication and collaboration to bring your vision to life. From the initial consultation to the final touches, We are dedicated to providing exceptional craftsmanship. ? We are ready to start, so contact me today.


Avatar for Weaver Commercial & Home Improvements, LLC

Weaver Commercial & Home Improvements, LLC

7827 Town Square Avenue Suite 104
4.13(
16
)
Approved Pro

Weaver Commercial & Home Improvements, LLC

7827 Town Square Avenue Suite 104
4.13(
16
)
Approved Pro
Customers say: Terrific value
13 local quotes requested
38 years of experience

Nothing improves the value of your home more than professional updates. At Weaver Commercial and Home Improvements we are a family owned and operated company that provides a wide range of service from kitchen, bath and basement remodels to complete decking installs, room additions and outdoor living spaces. We will customize your home with features to make daily life easier while improving the value of your home. With over 30 years of experience, we bring the quality and service you can trust. Our staff will work closely with you throughout the life cycle of your projects to ensure all of your goals are met. Visa and Mastercard accepted. We also offer financing options from 18 months no interest to fixed rate options for longer payment timelines. Give us a call today!! You won't be disappointed!

"Weaver did very well with our basement finishing. They did get the way we wanted things done, which was a bit unique, but they did miss a few things, like not understand we were going to take care of some things that were non-standard ourselves (because they were non-standard.). They also did leave us hanging a little at the end - we still never got our light switch at the end of the stairs hooked back up to the light, nor found out how to change the cam lights, but at some point I just gave up, cause they were kinda done with us after they got their last payment. Generally good to work with, they did have a bit of a time getting workers due to COVID, and there were some small less than desirable messes left. But thatâ  s small compared to the overall work, which was good. So Iâ  m pretty happy overall."

Jamie B on August 2021

Nothing improves the value of your home more than professional updates. At Weaver Commercial and Home Improvements we are a family owned and operated company that provides a wide range of service from kitchen, bath and basement remodels to complete decking installs, room additions and outdoor living spaces. We will customize your home with features to make daily life easier while improving the value of your home. With over 30 years of experience, we bring the quality and service you can trust. Our staff will work closely with you throughout the life cycle of your projects to ensure all of your goals are met. Visa and Mastercard accepted. We also offer financing options from 18 months no interest to fixed rate options for longer payment timelines. Give us a call today!! You won't be disappointed!

"Weaver did very well with our basement finishing. They did get the way we wanted things done, which was a bit unique, but they did miss a few things, like not understand we were going to take care of some things that were non-standard ourselves (because they were non-standard.). They also did leave us hanging a little at the end - we still never got our light switch at the end of the stairs hooked back up to the light, nor found out how to change the cam lights, but at some point I just gave up, cause they were kinda done with us after they got their last payment. Generally good to work with, they did have a bit of a time getting workers due to COVID, and there were some small less than desirable messes left. But thatâ  s small compared to the overall work, which was good. So Iâ  m pretty happy overall."

Jamie B on August 2021


Avatar for Beaty Home Improvements

Beaty Home Improvements

562 Knob Hill Drive
4.63(
584
)
Approved Pro

Beaty Home Improvements

562 Knob Hill Drive
4.63(
584
)
Approved Pro
Super Service Award
Customers say: Super punctual
1153 local quotes requested
19 years of experience

Beaty Home Improvements has been providing professional quality remodeling services in St. Louis for over 20 years. Our attention to detail ensures that every kitchen and bathroom project is completed to the highest standard. Customer satisfaction is our top priority. Contact us today for all your home improvement needs.

"Calvin was very personable. He explained to me that he did lots of home repairs. I really like the company. They make sure you are taken care of. They follow up with the perspective customer."

Carrie D on October 2025

Beaty Home Improvements has been providing professional quality remodeling services in St. Louis for over 20 years. Our attention to detail ensures that every kitchen and bathroom project is completed to the highest standard. Customer satisfaction is our top priority. Contact us today for all your home improvement needs.

"Calvin was very personable. He explained to me that he did lots of home repairs. I really like the company. They make sure you are taken care of. They follow up with the perspective customer."

Carrie D on October 2025

...
Showing 1-10 of 992
FAQs for addition to existing structure building service projects in University City, MO

Yes, hidden rooms are legal, as long as they meet all local building regulations. If you sell your house, most states require homeowners to disclose full houseplans, which would include any hidden rooms.

If your secret room is a safe room, it should contain a means of communication aside from a cell phone, such as a shortwave radio. You should also have plenty of drinking water, a portable generator, emergency food supplies, blankets, pillows, flashlights, batteries and a first aid kit.

Any time you update your home’s square footage, you increase its value, but a secret room is a niche feature that doesn't rank high on every buyer’s list of must-haves. Investing your money in remodeling more common living areas like bedrooms, bathrooms, or kitchens will have a higher ROI than adding a secret room. Many secret rooms can act as entertainment spaces (think a game room or wine cellar) or quiet spaces (a library or study), so when building your secret room you may want to consider its versatility for when you’re ready to sell.

The University City, MO homeowners’ guide to addition to existing structure building services

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

  • A renovated kitchen with a waterfall island

    HomeAdvisor’s DIY Kitchen Remodel Cost Guide looks at the cost of buying supplies and doing the work yourself. Find the key cost factors and how to cut expenses.

  • Secret room within bookcase

    HomeAdvisor's expert guide walks you through the cost to build a secret room, whether you're creating a safe room for security or a fun space to fulfil your childhood fantasies. Use this guide to help plan your secret room project and explore room, concea

  • outdoor patio bar

    Explore the cost to build a bar in your home and learn how materials, wet vs. dry bars, and labor costs influence the total price of your project.