Top-rated addition to existing structure builders.

Get matched with top addition to existing structure builders in your area

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.

Addition to existing structure builders in Chesterfield

Matt Hawkins Construction
17401 Koch Creek Road
5.00(
2
)
Approved Pro
Matt Hawkins Construction
17401 Koch Creek Road
5.00(
2
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
8 years of experience

With several years experience, we work hard to bring each customer the best possible service and quality available. We look forward to working with you on your next project. We welcome your questions and thank you for your interest.

"High quality work, very responsive, good guys."

Mike S on March 2020

With several years experience, we work hard to bring each customer the best possible service and quality available. We look forward to working with you on your next project. We welcome your questions and thank you for your interest.

"High quality work, very responsive, good guys."

Mike S on March 2020


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 Herron Hardscapes and Landscape Design
Herron Hardscapes and Landscape Design
400 Chesterfield Ctr
5.00(
16
)
Approved Pro
Herron Hardscapes and Landscape Design
400 Chesterfield Ctr
5.00(
16
)
Approved Pro
Super Service Award
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
138 local quotes requested

Your satisfaction is our priority and we strive to provide a service we are proud of. We start every project by providing a thorough consultation to understand your goals and the needs of the project. We do this to guarantee that the project is completed according to your preferences. Schedule your appointment online at herronhardscapes.com!

"Herron pays attention to the details and makes sure everything is right. He coordinated the construction of our wall with electrical and plumbing trades. The wall looks better than we imagined. Most importantly, Herron is very responsive and attentive to the client."

Todd H on August 2024

Your satisfaction is our priority and we strive to provide a service we are proud of. We start every project by providing a thorough consultation to understand your goals and the needs of the project. We do this to guarantee that the project is completed according to your preferences. Schedule your appointment online at herronhardscapes.com!

"Herron pays attention to the details and makes sure everything is right. He coordinated the construction of our wall with electrical and plumbing trades. The wall looks better than we imagined. Most importantly, Herron is very responsive and attentive to the client."

Todd H on August 2024


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
Super Service Award
Customers say: Quality work
1591 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 Maris Home Improvements, Inc.
Maris Home Improvements, Inc.
208 Chesterfield Industrial Blvd
4.85(
54
)
Approved Pro
Maris Home Improvements, Inc.
208 Chesterfield Industrial Blvd
4.85(
54
)
Approved Pro
Customers say: Quality work
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers
1396 local quotes requested

Family owned and operated, we perform. With over 20 years of experience we know what it takes to make you happy. We are local in Chesterfield and our top priority is a satisfied customer.

"We had the work performed with Maris over two different jobs. First, we had our windows replaced throughout our entire house (30ish). The installers were great and quick/clean. They have been fantastic for us since the installation. Siding, Soffits and Facia we had done more recently and the install crew was stellar. I didn't think they could top the window guys, but they were the best. I had numerous neighbors coming to ask me for their information."

Ian H on September 2020

Family owned and operated, we perform. With over 20 years of experience we know what it takes to make you happy. We are local in Chesterfield and our top priority is a satisfied customer.

"We had the work performed with Maris over two different jobs. First, we had our windows replaced throughout our entire house (30ish). The installers were great and quick/clean. They have been fantastic for us since the installation. Siding, Soffits and Facia we had done more recently and the install crew was stellar. I didn't think they could top the window guys, but they were the best. I had numerous neighbors coming to ask me for their information."

Ian H on September 2020


Avatar for In 'N Out Construction
In 'N Out Construction
Servicing Around
5.00(
2
)
Approved Pro
In 'N Out Construction
Servicing Around
5.00(
2
)
Approved Pro
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
231 local quotes requested

We guarantee your satisfaction and we won’t leave until the job is done right. We pride ourselves on the quality work we provide, while delivering great customer service! Check out our services offered and call or click to schedule a free estimate today.

"Very satisfied with the quality, design and look of the composite deck. The crew did not rushed the construction or took any shortcuts. I highly recommend this company. And the owner Jose made sure he incorporate all our suggestions and was never seem bothered with our inputs. While the process was long, it was 100% worth all the effort. The porch and deck are beautiful, and we look forward to the years spent enjoying it. We continuously receive compliments from family, friends, and neighbors and have already recommended “In ‘N Out Construction”. This is the contractor that you want to choose. You will not be disappointed."

Gaurav J on July 2024

We guarantee your satisfaction and we won’t leave until the job is done right. We pride ourselves on the quality work we provide, while delivering great customer service! Check out our services offered and call or click to schedule a free estimate today.

"Very satisfied with the quality, design and look of the composite deck. The crew did not rushed the construction or took any shortcuts. I highly recommend this company. And the owner Jose made sure he incorporate all our suggestions and was never seem bothered with our inputs. While the process was long, it was 100% worth all the effort. The porch and deck are beautiful, and we look forward to the years spent enjoying it. We continuously receive compliments from family, friends, and neighbors and have already recommended “In ‘N Out Construction”. This is the contractor that you want to choose. You will not be disappointed."

Gaurav J on July 2024


Avatar for Main Event Landscaping
Main Event Landscaping
Main Event Landscaping And Remodeling
4.88(
8
)
Approved Pro
Main Event Landscaping
Main Event Landscaping And Remodeling
4.88(
8
)
Approved Pro
Customers say: Terrific value
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
917 local quotes requested

Your satisfaction is very important to us. We pride ourselves on the quality work we provide, while delivering great customer service! Check out our services offered.

"Rick and crew were great! They removed overgrown weeds and rock landscaping around my pool and replaced with new rock and landscaping. The price was very fair and they completed the work quickly! I have more landscaping work I plan on doing soon and I will definitely be using them again."

Jennifer o on April 2025

Your satisfaction is very important to us. We pride ourselves on the quality work we provide, while delivering great customer service! Check out our services offered.

"Rick and crew were great! They removed overgrown weeds and rock landscaping around my pool and replaced with new rock and landscaping. The price was very fair and they completed the work quickly! I have more landscaping work I plan on doing soon and I will definitely be using them again."

Jennifer o on April 2025

...
Showing 1-10 of 952

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.
built-in outdoor kitchen with grill and sink
Apr 30, 2025
Apr 30, 2025
Budget for outdoor kitchen costs based on factors such as appliances, materials, permits, labor, amenities, kitchen size, customizations, and more.
BLUE TWO STORY HOME
Apr 30, 2025
Apr 30, 2025
Budget for the cost to add a second story based on factors such as size, foundation work, materials, labor, permits, post-construction cleaning, and more.
small bathroom that has been updated in a remodel
Apr 29, 2025
Apr 29, 2025
Budget for the cost to remodel a small bathroom based on factors such as required fixtures, bathroom size, labor, remodel type, site prep, and more.
guest house in the backyard
Apr 27, 2025
Apr 27, 2025
Need to build a guest house? Here’s how much it costs, what factors affect cost, and what to expect.
Kitchen view leading into dining area
Apr 28, 2025
Apr 28, 2025
Use this guide to budget for bump-out addition costs based on factors such as room size, room type, labor, finishes, permits, and more.
House roof with nice window
Apr 28, 2025
Apr 28, 2025
Budget for dormer addition costs based on factors such as roof type, framing, customizations, reinforcement, cladding, labor, and more.
Share project details to get started.