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Top-Rated Addition to existing structure builders in Lake Saint Louis - Updated Nov 2026

Avatar for Power 2 Construction & Remodeling
Power 2 Construction & Remodeling
4.8(
32
)
Addition to Existing Structure - Build

Serving Lake Saint Louis, MO and surrounding areas

Approved

In business since 2021

Free estimates

Warranties offered

"Power 2 Construction built a brand new Fourseason Room on our existing concrete Patio. The room is beautiful, exactly what we wanted. Randy and his team were great to work with , very professional , and Randy quickly responded to any concerns or questions. The sun room is fantastic , and we would hire them again."
Remodeling - General Project
Remodeling - General Project
Remodeling - General Project
Response rate100%
6 neighbors recently requested a quote
Recommended by90%of homeowners
Avatar for Dana King Design-Build and Remodeling
Dana King Design-Build and Remodeling
4.6(
292
)
Addition to Existing Structure - Build

Serving Lake Saint Louis, MO and surrounding areas

Approved

Super Service Award Winner

In business since 2003

Warranties offered

Credit card accepted

"We hired Dana King to build our garage and we were so pleased by the result we hired them to remodel our kitchen. Dana and her team do an excellent job communicating throughout the construction project, keeping to their budget, and their designs are simply beautiful. We couldn't be happier with their work to make our home a place of tranquility."
Original wood floors were sand,stained and finished to bring out the beauty of the homes original flooring.
Modern Whole Home Remodel
Master Bath Remodel
Premium Garage Remodel
Master Suite Remodel

+139

Response time5 days
8 neighbors recently requested a quote
Recommended by85%of homeowners
Avatar for Invested Home Renovations
Invested Home Renovations
4.6(
10
)
Addition to Existing Structure - Build

Serving Lake Saint Louis, MO and surrounding areas

Approved

In business since 2018

Free estimates

Credit card accepted

"Overall good experience. Worked directly with the General Contractor, he was able to work around my schedule and ensure that all subs completed their work to our standard the first time! Upfront pricing, honest and provided flexibility in price. For example, I wanted to have my own painter. Additionally I purchased my own vanity and shower. He provided just a labor quote. Iâ ve already recommended to two friends!"
Custom Staircase
Custom Staircase
Custom Staircase
Custom Staircase
Custom Staircase

+103

Response time1 day
1 neighbors recently requested a quote
Recommended by90%of homeowners
Avatar for The Designer Craftsmen
The Designer Craftsmen
5.0(
5
)
Addition to Existing Structure - Build

Serving Lake Saint Louis, MO and surrounding areas

Approved

Free estimates

Small jobs welcome

Credit card accepted

Hello there! I'm a Saint Charles/Saint Louis native and an experienced carpenter and remodeller of 17 years! Been in my own business since 2022. I love to do beautiful work at reasonable prices. I am focused on design-minded small construction and carpentry--this means that I am not primarily so focused on flashy features and the newest updates, and more focused on how I can create a project with you that makes sense with your specific house and it's architectural design. I love working with wood the most but really love doing most anything on a home and happy to do handyman work here and there as well. Please reach out so we can start a conversation! I'm happy to offer advice on how to navigate the construction industry or send you phone numbers of other great guys if you need other services. I focus on approachability and a down to earth experience. I love doing good work, i'm easy to deal with and show up when I say I will. Would love to work with you!

Saint Charles Re-Deck
Saint Charles Re-Deck
Saint Charles Re-Deck
Saint Charles Re-Deck
Saint Charles Re-Deck

+25

Avatar for OV Development & Construction Group LLC
OV Development & Construction Group LLC
5.0(
2
)
Addition to Existing Structure - Build

Serving Lake Saint Louis, MO and surrounding areas

Approved

Free estimates

Emergency services offered

Warranties offered

"Great customer service they arrived on SAID time ON time. They didn't leave until the job was completed. I spotted one small flaw but nothing to complain about other than that they did a great job. They cleaned up behind themselves. I had to disposed of all the trash myself but they did put all the trash in bags and sat them outside nice and neat and it was also in the contract that the customer is responsible for disposal of trash. It was not a surprise. This properly why the cost was reasonably priced. I will use them again."
19 neighbors recently requested a quote
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FAQs for addition to existing structure building service projects in Lake Saint Louis, MO

You can typically raise your roof by four to eight feet, depending on your home's structure and roof design. The exact amount depends on factors like roof slope and framing support. Raising the roof creates additional interior space, enhances natural light, and increases your home's value. Consult a professional to determine the feasible height increase for your home.

Yes, you need a building permit to raise your roof. Obtaining a building permit ensures your project complies with local building codes and safety regulations. A professional contractor can assist with the permit and inspection process and ensure all legal and safety requirements are met. Your contractor will be familiar with building codes in your area, which can differ between cities or states.

While it's possible to raise a flat roof, it requires extensive structural modifications. Flat roofs lack the attic space and support structures of pitched roofs, so raising them involves significant engineering to ensure safety and durability. This process can be complex and costly, so professional assessment is essential before undertaking a project of this magnitude.

The Lake Saint Louis, 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.