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Addition to existing structure builders in University City

Brillig Construction LLC
5129 3rd Street
5.00(
1
)
Approved Pro
Brillig Construction LLC
5129 3rd Street
5.00(
1
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
17 years of experience

With over 7 years of experience serving the Saint Louis Metro area, NTNG Construction, LLC, is your solution for all your home improvement and construction needs. We take great pride in our extreme professionalism, timeliness and superior customer service on every job. We make sure to develop a lasting relationship so that the next time service is needed there will be no question on who to call. Satisfaction guaranteed! Give us a call today, we are happy to help you with your project and look forward to talking to you.

"Easy to work with and high quality of work."

Allison D on June 2019

With over 7 years of experience serving the Saint Louis Metro area, NTNG Construction, LLC, is your solution for all your home improvement and construction needs. We take great pride in our extreme professionalism, timeliness and superior customer service on every job. We make sure to develop a lasting relationship so that the next time service is needed there will be no question on who to call. Satisfaction guaranteed! Give us a call today, we are happy to help you with your project and look forward to talking to you.

"Easy to work with and high quality of work."

Allison D on June 2019


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 McIntosh Construction
McIntosh Construction
948 Nana Ln
5.00(
6
)
Approved Pro
McIntosh Construction
948 Nana Ln
5.00(
6
)
Approved Pro
4 years of experience
Free onsite estimate

At McIntosh Construction , we believe in honesty, integrity, and transparency. We are committed to communicating openly with our clients and providing them with the highest level of service and cleanliness. We treat every home like our own. We were recently awarded the "Neighborhood Favorite" award for the second year in a row.

"Quin and his team were a pleasure to have work on my property! I cannot recommend them enough. The work is above my expectations and compared to other companies much easier on my wallet. Do yourself a favor and hire this group! "

Lauren D on March 2025

At McIntosh Construction , we believe in honesty, integrity, and transparency. We are committed to communicating openly with our clients and providing them with the highest level of service and cleanliness. We treat every home like our own. We were recently awarded the "Neighborhood Favorite" award for the second year in a row.

"Quin and his team were a pleasure to have work on my property! I cannot recommend them enough. The work is above my expectations and compared to other companies much easier on my wallet. Do yourself a favor and hire this group! "

Lauren D on March 2025


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
17 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 Skillcrafters Inc.
Skillcrafters Inc.
1357 Charlestown Industrial Dr, Saint Charles Missouri 633
4.00(
4
)
Approved Pro
Skillcrafters Inc.
1357 Charlestown Industrial Dr, Saint Charles Missouri 633
4.00(
4
)
Approved Pro
Customers say: Quick response
562 local quotes requested
24 years of experience

Skillcrafters Inc. is a family owned remodeling company that was established in 2001 to provide quality remodeling projects and workmanship at reasonable prices.

"Came out to bid master bath. Dropped onyx samples on hardwood floor denting floor. High pressure sales. When bid received, we asked questions with no response. They appeared to fall off the face of the earth. Would not recommend."

Chris S on October 2018

Skillcrafters Inc. is a family owned remodeling company that was established in 2001 to provide quality remodeling projects and workmanship at reasonable prices.

"Came out to bid master bath. Dropped onyx samples on hardwood floor denting floor. High pressure sales. When bid received, we asked questions with no response. They appeared to fall off the face of the earth. Would not recommend."

Chris S on October 2018


Avatar for Easter Fence, Deck & Renovations
Easter Fence, Deck & Renovations
6071 Lemay Ferry Rd.
4.57(
142
)
Approved Pro
Easter Fence, Deck & Renovations
6071 Lemay Ferry Rd.
4.57(
142
)
Approved Pro
Customers say: Quality work
1390 local quotes requested
68 years of experience

Easter is one of the best-known and trusted fence, deck and renovation companies in the Midwest. Committed to “doing what’s right,” they are your good neighbor. The Easter Family guarantee is – “Even if it is the first job Dad did in 1957, if we didn’t do it right or didn’t do what we said, we’ll fix it for free.

"Vinyl fence repair. One post needed reset and turned out to be more difficult than expected but job was finished on schedule and no issues after spring storms with heavy rain."

Steve R on May 2024

Easter is one of the best-known and trusted fence, deck and renovation companies in the Midwest. Committed to “doing what’s right,” they are your good neighbor. The Easter Family guarantee is – “Even if it is the first job Dad did in 1957, if we didn’t do it right or didn’t do what we said, we’ll fix it for free.

"Vinyl fence repair. One post needed reset and turned out to be more difficult than expected but job was finished on schedule and no issues after spring storms with heavy rain."

Steve R on May 2024


Avatar for Romine Contracting LLC
Romine Contracting LLC
1055 Cantebury Cir
4.93(
109
)
Approved Pro
Romine Contracting LLC
1055 Cantebury Cir
4.93(
109
)
Approved Pro
Customers say: Quality work
Recommended by 98% of Angi customers
Recommended by 98% of HomeAdvisor customers
497 local quotes requested

Romine Contracting, LLC has over 40 years combined experience in renovation and remodeling. We work closely with our clients to ensure they are involved from the beginning of the project to the end so as to guarantee their complete satisfaction. We have superior craftsmanship, integrity, pride and quality that can be seen in every project that we do. Customers are what makes our business grow so thank you for allowing us to help make your home or business something to truly be proud of.

"Vinny finished our basement. During the project he was responsive, thorough, and attentive to detail, ensuring quality of the final product. He used knowledgeable subcontractors who did quality work for electrical, plumbing, and hvac, painting. He was considerate of cost and reasonably priced."

Eric W on March 2025

Romine Contracting, LLC has over 40 years combined experience in renovation and remodeling. We work closely with our clients to ensure they are involved from the beginning of the project to the end so as to guarantee their complete satisfaction. We have superior craftsmanship, integrity, pride and quality that can be seen in every project that we do. Customers are what makes our business grow so thank you for allowing us to help make your home or business something to truly be proud of.

"Vinny finished our basement. During the project he was responsive, thorough, and attentive to detail, ensuring quality of the final product. He used knowledgeable subcontractors who did quality work for electrical, plumbing, and hvac, painting. He was considerate of cost and reasonably priced."

Eric W on March 2025


Avatar for AAA Remodeling Company
AAA Remodeling Company
204 Little Bussen Dr
4.57(
49
)
Approved Pro
AAA Remodeling Company
204 Little Bussen Dr
4.57(
49
)
Approved Pro
Customers say: Super punctual
254 local quotes requested
61 years of experience

2017 Super Service Award Winner! AAA Remodeling Company has been remodeling St. Louis for over 50 Years! We provide the residents and business owners of St. Louis with the highest quality bathroom and kitchen remodels! AAA Remodeling Company is a full service remodeling company specializing in Kitchens, Baths, Sunrooms and Screen Enclosures.

"AAA Remodeling Company employees were polite, trustworthy, skilled and insightful.The attention to detail, the quality of their work and the suggestions/solutions to our needs were most appreciated. We shared what we needed and they proceeded to make it happen beyond our expectations. I would definitely include them in any future bidding process. Sr. Carol Apostles of the Sacred Heart of Jesus"

Sr. Carol S on September 2024

2017 Super Service Award Winner! AAA Remodeling Company has been remodeling St. Louis for over 50 Years! We provide the residents and business owners of St. Louis with the highest quality bathroom and kitchen remodels! AAA Remodeling Company is a full service remodeling company specializing in Kitchens, Baths, Sunrooms and Screen Enclosures.

"AAA Remodeling Company employees were polite, trustworthy, skilled and insightful.The attention to detail, the quality of their work and the suggestions/solutions to our needs were most appreciated. We shared what we needed and they proceeded to make it happen beyond our expectations. I would definitely include them in any future bidding process. Sr. Carol Apostles of the Sacred Heart of Jesus"

Sr. Carol S on September 2024


Avatar for SIGNATURE LANDSCAPES & DESIGN INC
SIGNATURE LANDSCAPES & DESIGN INC
122 Hunters Lake Ct
4.41(
68
)
Approved Pro
SIGNATURE LANDSCAPES & DESIGN INC
122 Hunters Lake Ct
4.41(
68
)
Approved Pro
Customers say: Quality work
809 local quotes requested
24 years of experience

Throughout your landscape project, from planning to installation to completion, we strive to meet your needs and concerns at every phase of the project. We take great pride in our history of providing the St. Louis area and beyond with the absolute best in landscape construction services. With our history of successful projects and satisfied customers, we’re happy to provide references upon request to demonstrate the level of satisfaction we strive to achieve on every project.

"Work was beautifully done. Just what we wanted."

Amy P on January 2021

Throughout your landscape project, from planning to installation to completion, we strive to meet your needs and concerns at every phase of the project. We take great pride in our history of providing the St. Louis area and beyond with the absolute best in landscape construction services. With our history of successful projects and satisfied customers, we’re happy to provide references upon request to demonstrate the level of satisfaction we strive to achieve on every project.

"Work was beautifully done. Just what we wanted."

Amy P on January 2021


Avatar for GA CHOTT & ASSOCIATES INC
GA CHOTT & ASSOCIATES INC
PO BOX 1182
4.79(
180
)
Approved Pro
GA CHOTT & ASSOCIATES INC
PO BOX 1182
4.79(
180
)
Approved Pro
Customers say: Super punctual
Recommended by 92% of Angi customers
Recommended by 92% of HomeAdvisor customers
420 local quotes requested

G.A. Chott & Associates, Inc. is a professional remodeling company specializing in kitchens, baths, basements, doors, windows, flooring, painting, and most interior repairs and maintenance. We work together as a team for the benefit of the company as well as for our customers. Our business is helping people transform their living spaces into the home of their dreams. We will do this by being on time and on budget and by providing quality workmanship at reasonable pricing. Hard work has produced a reputation whereby our customers are assured of quality remodeling and repairs that are completed with attention to detail by polite and courteous professional people. Our company pays competitive wages and benefits. We invest time and money in training employees to make them as good as they can be. You will find that our prices are competitive for the quality work that we do. Please call us for all of your remodeling needs.

"This is the second time we’ve hired GA Chott during the past 15 years. We hired Darryll and Angie and team to build out a bathroom from scratch (no plumbing) in our upstairs attic space, and we couldn’t be happier with the results. The quality of the work is unsurpassed. We had an inspector ask us about who did the work so that he could contact them for a job in his own home. The quality and attention to detail were incredible. James is purely a rockstar – he works quietly (considering it included demo and the like), cleanly and respectfully. He kept us in the know along the way and really brought the details together. He was always available when we had questions and did quality work from top to bottom. Most of all, James really treated our home as though it was his own. The coordination of the project (which included several required inspections) was all handled by Angie and team. She is a great communicator, and that can’t be overlooked in a project of this scale. Again, she was always available for any questions we may have, and made it feel like we were their only clients. Darryll helped us navigate decisions and brought the full plan together. When we encountered a couple of small issues, he was quick to address and correct them, and assured that things were properly handled. This was a large, 8-week project. We did our homework and acquired several bids. GA Chott wasn’t the cheapest (or the most expensive), but they were clearly the best choice. We give our highest recommendation. You’ll be pleased with both the quality of the work and how it’s handled throughout the process."

James S on November 2023

G.A. Chott & Associates, Inc. is a professional remodeling company specializing in kitchens, baths, basements, doors, windows, flooring, painting, and most interior repairs and maintenance. We work together as a team for the benefit of the company as well as for our customers. Our business is helping people transform their living spaces into the home of their dreams. We will do this by being on time and on budget and by providing quality workmanship at reasonable pricing. Hard work has produced a reputation whereby our customers are assured of quality remodeling and repairs that are completed with attention to detail by polite and courteous professional people. Our company pays competitive wages and benefits. We invest time and money in training employees to make them as good as they can be. You will find that our prices are competitive for the quality work that we do. Please call us for all of your remodeling needs.

"This is the second time we’ve hired GA Chott during the past 15 years. We hired Darryll and Angie and team to build out a bathroom from scratch (no plumbing) in our upstairs attic space, and we couldn’t be happier with the results. The quality of the work is unsurpassed. We had an inspector ask us about who did the work so that he could contact them for a job in his own home. The quality and attention to detail were incredible. James is purely a rockstar – he works quietly (considering it included demo and the like), cleanly and respectfully. He kept us in the know along the way and really brought the details together. He was always available when we had questions and did quality work from top to bottom. Most of all, James really treated our home as though it was his own. The coordination of the project (which included several required inspections) was all handled by Angie and team. She is a great communicator, and that can’t be overlooked in a project of this scale. Again, she was always available for any questions we may have, and made it feel like we were their only clients. Darryll helped us navigate decisions and brought the full plan together. When we encountered a couple of small issues, he was quick to address and correct them, and assured that things were properly handled. This was a large, 8-week project. We did our homework and acquired several bids. GA Chott wasn’t the cheapest (or the most expensive), but they were clearly the best choice. We give our highest recommendation. You’ll be pleased with both the quality of the work and how it’s handled throughout the process."

James S on November 2023

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Addition to existing structure building services FAQs

How far you can push a room depends on the structure you choose. A cantilevered bump-out can extend 24 inches before building codes require its own footing or foundation. Anything longer needs engineered support and a permit. Check local codes or consult with a structural professional before finalizing plans to ensure your design remains safe and compliant.

Most bump-outs are completed within one to four weeks, even with minimal electrical, plumbing, or HVAC work. Their compact size means less demolition, simpler inspections, and fewer weather-related delays compared to a full-scale addition. Your contractor can provide a more precise timeline once they have determined the scope, materials, and permit schedule, but plan on having the extra square footage ready in approximately a month.

The 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.
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