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 Galveston

Professional Construction Services
936 Long Reach Drive
4.44(
18
)
Approved Pro
Professional Construction Services
936 Long Reach Drive
4.44(
18
)
Approved Pro
Customers say: Quick response
Recommended by 94% of Angi customers
Recommended by 94% of HomeAdvisor customers
30 years of experience

We take great pride in our experience, 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 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 customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.

"Very professional kept me informed of who was supposed to be coming and when followed up on any questions. All licensed contractors. Highly recommend"

Christina B on December 2019

We take great pride in our experience, 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 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 customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.

"Very professional kept me informed of who was supposed to be coming and when followed up on any questions. All licensed contractors. Highly recommend"

Christina B on December 2019


Avatar for ISC Construction Services, LLC
ISC Construction Services, LLC
1005 Winfield Lane
4.92(
15
)
Approved Pro
ISC Construction Services, LLC
1005 Winfield Lane
4.92(
15
)
Approved Pro
Customers say: Quick response
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers
24 years of experience

Locally owned and operated and in business since 2001 with over 17 years in the home building industry, ISC Construction Services, LLC, is the company to call for all of your custom home building, add-on, and flooring needs. Many finance options are available to our customers. Call us today for a free estimate.

"Building during covid and hurricane threats are experiences in themselves. Isaac from ISC Construction was only a phone call away at any time. Building comes with a lot of ins and outs and we always found reasonable back up plans during the problematic times. Mostly due to hurricane building requirements. Make sure you get your pricing locked down and expect the 15-20% extra costs at the end for building as we did. One thing I wished he had would be a building supervisor. The property was far enough to be an issue when certain contractors were there. Maybe he’ll hire me !! A big plus is that he is bilingual and can communicate with the workers. This helped tremendously. The build itself is amazing. We love our house. He helped us find the lot and build! He always says he’s a one-man shop! Ha!"

Laura C on June 2021

Locally owned and operated and in business since 2001 with over 17 years in the home building industry, ISC Construction Services, LLC, is the company to call for all of your custom home building, add-on, and flooring needs. Many finance options are available to our customers. Call us today for a free estimate.

"Building during covid and hurricane threats are experiences in themselves. Isaac from ISC Construction was only a phone call away at any time. Building comes with a lot of ins and outs and we always found reasonable back up plans during the problematic times. Mostly due to hurricane building requirements. Make sure you get your pricing locked down and expect the 15-20% extra costs at the end for building as we did. One thing I wished he had would be a building supervisor. The property was far enough to be an issue when certain contractors were there. Maybe he’ll hire me !! A big plus is that he is bilingual and can communicate with the workers. This helped tremendously. The build itself is amazing. We love our house. He helped us find the lot and build! He always says he’s a one-man shop! Ha!"

Laura C on June 2021


Avatar for Watermark Restoration, Ltd.
Watermark Restoration, Ltd.
11020 Katy Freeway Suite 205
4.38(
12
)
Approved Pro
Watermark Restoration, Ltd.
11020 Katy Freeway Suite 205
4.38(
12
)
Approved Pro
Customers say: Quick response
Recommended by 91% of Angi customers
Recommended by 91% of HomeAdvisor customers
18 local quotes requested

Terry Buckner and his company, Watermark Restoration, take a strong stance of priority on customer service and quality in all that they do. His company is A+ rated by the Better Business Bureau. Call Terry today and find out just how good the client contractor experience can be when one is dealing with a true professional.

"Wolf in sheep's clothing. Do not use for any project. Terry comes across as a nice Christian guy but all he cares about is getting his money. We lost 90% of our 3500 sq/ft home to water damage and hired him because he came across as caring/understanding/knowledgeable. I can list over a dozen issues from poor project management, to cheap work, poor communication, false expectations etc... but I wont for sake of time. Feel free to call me or email me and I will tell you everything, share photos (contracts & documents) and you can even come to my home & see the work. In the end he is putting a lien on our home and we have hired a lawyer because he says we owe him money for he never did and for work he never completed. Not to mention he has ignored the personal property damage his crews caused. I have nothing to hide. Jimmy {remove number} or { remove email } "

Jimmy T on May 2025

Terry Buckner and his company, Watermark Restoration, take a strong stance of priority on customer service and quality in all that they do. His company is A+ rated by the Better Business Bureau. Call Terry today and find out just how good the client contractor experience can be when one is dealing with a true professional.

"Wolf in sheep's clothing. Do not use for any project. Terry comes across as a nice Christian guy but all he cares about is getting his money. We lost 90% of our 3500 sq/ft home to water damage and hired him because he came across as caring/understanding/knowledgeable. I can list over a dozen issues from poor project management, to cheap work, poor communication, false expectations etc... but I wont for sake of time. Feel free to call me or email me and I will tell you everything, share photos (contracts & documents) and you can even come to my home & see the work. In the end he is putting a lien on our home and we have hired a lawyer because he says we owe him money for he never did and for work he never completed. Not to mention he has ignored the personal property damage his crews caused. I have nothing to hide. Jimmy {remove number} or { remove email } "

Jimmy T on May 2025


Bismila Finishers
PO Box 66
5.00(
2
)
Approved Pro
Bismila Finishers
PO Box 66
5.00(
2
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
290 local quotes requested

Welcome to Bismila Finishers, Rated Best of Home Advisor on interior/exterior General Remodeling ! We look forward to serving you! Now accepting all major credit cards..

"He is very pleasant and very polite. I would definitely used them again"

pete g on September 2022

Welcome to Bismila Finishers, Rated Best of Home Advisor on interior/exterior General Remodeling ! We look forward to serving you! Now accepting all major credit cards..

"He is very pleasant and very polite. I would definitely used them again"

pete g on September 2022


Avatar for Remodel Specialists
Remodel Specialists
2530 Spring Cypress Rd
4.80(
181
)
Approved Pro
Remodel Specialists
2530 Spring Cypress Rd
4.80(
181
)
Approved Pro
Customers say: Quality work
Recommended by 91% of Angi customers
Recommended by 91% of HomeAdvisor customers
556 local quotes requested

We are a kitchens and bathrooms company. We specialize in custom showers, custom cabinets and counter tops. We staff high end professionals and use sub contractors only when necessary. We also give a very detailed estimate, action oriented so you only pay for the work preformed and gives control to the homeowner.

"These guys were fantastic. They are one of the few companies out there that that actually do what they say will do. They send you daily emails around 830 am describing the activities for the day and who will be inside your house. Their communication is great - they always answer emails and texts in a very timely matter. The master bathroom we had remodeled looks great and was done in the time period they indicated at the beginning of the process. Sure, you could probably find someone cheaper and does inferior work, however we wanted it done right the first time. Nic and Sarah and the entire team exceeded our expectations!"

Brad A on October 2024

We are a kitchens and bathrooms company. We specialize in custom showers, custom cabinets and counter tops. We staff high end professionals and use sub contractors only when necessary. We also give a very detailed estimate, action oriented so you only pay for the work preformed and gives control to the homeowner.

"These guys were fantastic. They are one of the few companies out there that that actually do what they say will do. They send you daily emails around 830 am describing the activities for the day and who will be inside your house. Their communication is great - they always answer emails and texts in a very timely matter. The master bathroom we had remodeled looks great and was done in the time period they indicated at the beginning of the process. Sure, you could probably find someone cheaper and does inferior work, however we wanted it done right the first time. Nic and Sarah and the entire team exceeded our expectations!"

Brad A on October 2024


Avatar for Seek Design & Renovation
Seek Design & Renovation
3120 Southwest Fwy
4.66(
155
)
Approved Pro
Seek Design & Renovation
3120 Southwest Fwy
4.66(
155
)
Approved Pro
Customers say: Quality work
Recommended by 90% of Angi customers
Recommended by 90% of HomeAdvisor customers
587 local quotes requested

Seek Design & Renovation is a locally owned, full service remodeling & design company. We are a multi year 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, and 2024 winner of the Angie's List Super Service Awards; along with many other prestigious awards. We provide decades of experience in construction to the Greater Houston area. Our award winning reputation has been established for the quality of our craftsmanship, integrity and customer service. We are proud accredited members of the Better Business Bureau of Texas with a five-star rating and a Gold Member with Angie's List thanks to our client reviews over the years. Visit our website at www.SeekRemodel.com.

"We had a water heater leak that flooded my daughter's bedroom. Seek Design was prompt, professional, and did an absolutely wonderful job. The work was top-notch and done quite quickly. I would absolutely hire again. - Vincent S. (Spring TX)"

Vincent E S on January 2025

Seek Design & Renovation is a locally owned, full service remodeling & design company. We are a multi year 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, and 2024 winner of the Angie's List Super Service Awards; along with many other prestigious awards. We provide decades of experience in construction to the Greater Houston area. Our award winning reputation has been established for the quality of our craftsmanship, integrity and customer service. We are proud accredited members of the Better Business Bureau of Texas with a five-star rating and a Gold Member with Angie's List thanks to our client reviews over the years. Visit our website at www.SeekRemodel.com.

"We had a water heater leak that flooded my daughter's bedroom. Seek Design was prompt, professional, and did an absolutely wonderful job. The work was top-notch and done quite quickly. I would absolutely hire again. - Vincent S. (Spring TX)"

Vincent E S on January 2025


Avatar for Expo Home Improvement
Expo Home Improvement
New on HomeAdvisorNew on Angi
Approved Pro
Expo Home Improvement
New on AngiNew on HomeAdvisor
Approved Pro
552 local quotes requested
19 years of experience

Since 2006, we've specialized in Bath and Shower Remodels, Window and Door Replacements, and Insulation for your home. As a local company, it is our pleasure to offer only the best products and solutions, because we know the heart of every Texan home, is a family. A new home improvement project should be a great experience, so choose a trusted contractor you know you can count on! Over 20,000 Texan Families have trusted us with their home renovations. Give us a call today! M-39963

Since 2006, we've specialized in Bath and Shower Remodels, Window and Door Replacements, and Insulation for your home. As a local company, it is our pleasure to offer only the best products and solutions, because we know the heart of every Texan home, is a family. A new home improvement project should be a great experience, so choose a trusted contractor you know you can count on! Over 20,000 Texan Families have trusted us with their home renovations. Give us a call today! M-39963


Avatar for Custom remodeling
Custom remodeling
2323 Commonwealth Street
4.91(
23
)
Approved Pro
Custom remodeling
2323 Commonwealth Street
4.91(
23
)
Approved Pro
Customers say: Quick response
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers
173 local quotes requested

Custom Remodeling is your go-to home renovation expert, specializing in high-quality remodeling solutions tailored to your unique style and needs. Whether you’re upgrading a kitchen, transforming a bathroom, finishing a basement, or remodeling your entire home, we deliver craftsmanship you can trust and results you’ll love. At Custom Remodeling, we take pride in clear communication, reliable timelines, and a customer-first approach that ensures your vision becomes reality—on time and within budget.

"The work took over a week when I was promised the painting would be completed in 3 days. The workers were late almost every day and there was an excuse each time (hardly ever an apology). One of these days, the workers did not show up at all and I wasn't given an explanation. I explained my frustration to Julio and he told me, "I don't have to tell you anything." Another instance was when he was scheduled to pick up 1 of the workers from my house around 4 or 4:30 and he didn't show up until almost 8:00 PM. I expressed my frustration to Julio and he basically just said he was sorry and left. At this point, I had paid him half the money and just wanted my house completed before Christmas. After the work was complete, there was paint left on my carpet, tile floor and some of the areas of the house still needed to a second coat of paint. Julio did come out to the house twice to touch up those areas, however, there are STILL areas that need to be repainted and paint is still on the floor. I would not recommend Custom Remodeling due to their lack of professionalism and sloppy work."

Candice Q on January 2019

Custom Remodeling is your go-to home renovation expert, specializing in high-quality remodeling solutions tailored to your unique style and needs. Whether you’re upgrading a kitchen, transforming a bathroom, finishing a basement, or remodeling your entire home, we deliver craftsmanship you can trust and results you’ll love. At Custom Remodeling, we take pride in clear communication, reliable timelines, and a customer-first approach that ensures your vision becomes reality—on time and within budget.

"The work took over a week when I was promised the painting would be completed in 3 days. The workers were late almost every day and there was an excuse each time (hardly ever an apology). One of these days, the workers did not show up at all and I wasn't given an explanation. I explained my frustration to Julio and he told me, "I don't have to tell you anything." Another instance was when he was scheduled to pick up 1 of the workers from my house around 4 or 4:30 and he didn't show up until almost 8:00 PM. I expressed my frustration to Julio and he basically just said he was sorry and left. At this point, I had paid him half the money and just wanted my house completed before Christmas. After the work was complete, there was paint left on my carpet, tile floor and some of the areas of the house still needed to a second coat of paint. Julio did come out to the house twice to touch up those areas, however, there are STILL areas that need to be repainted and paint is still on the floor. I would not recommend Custom Remodeling due to their lack of professionalism and sloppy work."

Candice Q on January 2019


Avatar for Genie Bath Systems
Genie Bath Systems
5680 Randolph Blvd
4.64(
83
)
Approved Pro
Genie Bath Systems
5680 Randolph Blvd
4.64(
83
)
Approved Pro
Customers say: Quality work
4367 local quotes requested
12 years of experience

Genie Bath Systems provides homeowners with custom bath remodeling solutions, to include a full-line accessibility needs. All of our products are custom made in the USA. Factory Certified Installation.Lifetime Warranty.100% Financing . PLEASE NOTE: WE DON"T PERFORM KITCHEN REMODELS

"Last October, my sister, an elderly veteran living alone, contracted Genie Bath Systems to remodel her master and guest baths. She was diagnosed cancer and passed before the remodel was complete. Which, to be fair as we were not able to work with Genie while attending to my sister. The contract was expensive. Very expensive. The cost of the remodel is close to 1/4th the value of her home. I noticed there were issues with the remodel that showed a surprising lack of attention to detail. Genie sent people to address the issues twice. Yet issues remain. My calls to my contact at Genie are now being ignored. Also, the only document I have for the remodel is the contract my sister signed. It is not detailed. I have and continue to ask for a breakdown of the cost. An estimate or work order. This request is also being ignored. I am disappointed and have to wonder why Genie will not provide this information. I have several other questions for Genie that I will not go into here. But based on my experience, I cannot recommend Genie. In fact I would warn anyone considering Genie to be very careful about the cost of the contract."

Greg B on May 2025

Genie Bath Systems provides homeowners with custom bath remodeling solutions, to include a full-line accessibility needs. All of our products are custom made in the USA. Factory Certified Installation.Lifetime Warranty.100% Financing . PLEASE NOTE: WE DON"T PERFORM KITCHEN REMODELS

"Last October, my sister, an elderly veteran living alone, contracted Genie Bath Systems to remodel her master and guest baths. She was diagnosed cancer and passed before the remodel was complete. Which, to be fair as we were not able to work with Genie while attending to my sister. The contract was expensive. Very expensive. The cost of the remodel is close to 1/4th the value of her home. I noticed there were issues with the remodel that showed a surprising lack of attention to detail. Genie sent people to address the issues twice. Yet issues remain. My calls to my contact at Genie are now being ignored. Also, the only document I have for the remodel is the contract my sister signed. It is not detailed. I have and continue to ask for a breakdown of the cost. An estimate or work order. This request is also being ignored. I am disappointed and have to wonder why Genie will not provide this information. I have several other questions for Genie that I will not go into here. But based on my experience, I cannot recommend Genie. In fact I would warn anyone considering Genie to be very careful about the cost of the contract."

Greg B on May 2025


Avatar for Royal Coastal Builders
Royal Coastal Builders
4806 FM-646
5.00(
1
)
Approved Pro
Royal Coastal Builders
4806 FM-646
5.00(
1
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
1278 local quotes requested

At Royal Custom Builders We have over 50 years of combined experience and have gained a reputation of being a credible and reliable company. We managed to expand our activity throughout Texas Gulf Coast, Alabama and Florida. We strive for Quality and Give the best quality product to meet your timeline and budget. Workmanship is always Guaranteed and we have the do what you say and say what you do mentality that was passed down from previous generations of integrity.

"Everything was seamless from start to finish."

Tyler T on August 2024

At Royal Custom Builders We have over 50 years of combined experience and have gained a reputation of being a credible and reliable company. We managed to expand our activity throughout Texas Gulf Coast, Alabama and Florida. We strive for Quality and Give the best quality product to meet your timeline and budget. Workmanship is always Guaranteed and we have the do what you say and say what you do mentality that was passed down from previous generations of integrity.

"Everything was seamless from start to finish."

Tyler T on August 2024

...
Showing 1-10 of 964

FAQs for addition to existing structure building service projects in Galveston, TX

Converting an existing space into a laundry room is more affordable than building a new addition. While new additions start at $5,000, renovating an existing space for laundry use can begin at $1,300. 

Your specific costs will depend on whether plumbing and electrical connections exist nearby, the quality of finishes you select, and whether any structural modifications are needed. Always budget extra for unexpected issues, particularly in older homes where hidden problems might surface during renovation.

The smallest practical size for a new laundry room addition is 35 square feet, which provides enough space for basic appliances and minimal storage. For renovations utilizing existing space, smaller footprints might work with space-saving solutions like stacked appliances. 

A standard-sized laundry room of 60 square feet offers more comfort and functionality, allowing for counter space and storage cabinets. The optimal size depends on your household needs and available space.

Yes, adding a laundry room requires several permits, particularly for new additions. You'll need building permits, plus specific permits for electrical work, plumbing installations, and possibly HVAC modifications. 

Requirements vary significantly by municipality, so consulting with your local building department before starting work is essential. Proceeding without proper permits can result in fines, mandatory removal of completed work, and complications when selling your property.

The timeline for completing a laundry room addition varies based on project complexity, contractor availability, and permit processing times. Factors that can extend the schedule include material delivery delays, weather conditions, and unforeseen structural issues discovered during construction. 

Renovating an existing space often requires less time than building a completely new addition. Working with an experienced contractor who can coordinate various tradespeople efficiently helps keep your project on schedule.

The Galveston, TX 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.
white and gray kitchen with butchers block countertop
Apr 8, 2025
Apr 8, 2025
Looking to enhance the warmth and utility of your kitchen? Explore how much a butcher block countertop costs and start your budget here.
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.
Share project details to get started.