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Find Addition to existing structure builders in Oswego

Avatar for J K Complete Remodeling & Construction Inc
J K Complete Remodeling & Construction Inc
4.9(
269
)

Serving Oswego, IL and surrounding areas

Approved

In business since 1998

Free estimates

Warranties offered

"Jack took detailed notes during home quote visit and provided us an initial estimate over the phone. His proposal was comparable to other bids we got. We decided to move forward and he sent us a written estimate via email. The first estimate was slightly over original amount due to known possibility with electrical and additional work we wanted. They started the project and it took about 6 weeks to complete. There were some bumps in the beginning with days/time they were working but we were able to sort that out and all was good. Ralph was the main guy that did most of the work. He did a nice job and made sure to clean up after the end of each day. Basement turned out great and We are very happy with it."
Response time1 day
7 neighbors recently requested a quote
Recommended by98%of homeowners
Avatar for RO Construction
RO Construction
5.0(
14
)

Serving Oswego, IL and surrounding areas

Approved

In business since 2019

Free estimates

Credit card accepted

"My friend recommended RO construction, and I was really happy with how everything turned out. Another company redid my floors, but they messed up lifting the ceramic tiles, which damaged the concrete. This made the wood floor uneven. The company refused to fix it by leveling the concrete. So, I got referred to RO construction, and they pulled up the floors, leveled the concrete, and put everything back. I was totally satisfied."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+58

Avatar for Coach House Garages
Coach House Garages
4.9(
92
)

Serving Oswego, IL and surrounding areas

Approved

In business since 1973

Free estimates

Warranties offered

"My wife and I decided to replace our dilapidated one-car garage with a modern two-car garage. We chose to work with Coach House Garages and could not be happier with our garage and our customer service experience! Having never been involved in a construction project before, the idea of building a new garage was intimidating. We found Coach House Garages here on Angie’s List and contacted them to get a little information. We soon met with Jeff Grummer and after that meeting, we knew we found our builder. We could not have asked for a better partner to work with than Jeff. He was extremely knowledgable, accessible, never pushy and was quite patient (as we had a lot of questions and no understanding of process or timelines). Jeff guided us through the inevitable ebbs and flows, from variances and permits to tear down and construction. When we hit a couple challenges, Jeff helped us navigate the issues and keep the job on track. We were...and are...impressed with the quality of our new garage and the professionalism of Jeff and the entire Coach House Garage team. We would highly recommend them to anyone considering building a new garage."
Job #S0202
Job #S0058
Job #T0038
Job #S0094
Job #V0218

+24

Response time2 days
Response rate95%
Recommended by96%of homeowners
Avatar for Imperial 1 Construction Inc.
Imperial 1 Construction Inc.
5.0(
8
)

Serving Oswego, IL and surrounding areas

Approved

In business since 2009

Free estimates

Emergency services offered

"Everything went well from the minute I called to get an estimate, I felt so comfortable, I had a million questions, I was lil nervous because I have hired contractors in the past, and was ripped off, but from start to finish Imperial 1 made sure I was informed and happy with the work they did. I felt better knowing they wanted to make sure my project came out just to my liking"
Residential Remodeling
Bathroom Remodel
Industrial Business Roofing Project
Industrial Rehab
Residential home redesign and renovation

+9

Response time1 day
Response rate95%
Recommended by100%of homeowners
Avatar for Genstone Construction
Genstone Construction
5.0(
5
)

Serving Oswego, IL and surrounding areas

Approved

In business since 2018

Free estimates

Warranties offered

We bring over 40 years of expertise in bespoke home renovations crafted to reflect your vision, lifestyle, and standards. From gourmet kitchens and spa-inspired bathrooms to seamless additions and full-home transformations, our work is defined by timeless design, superior craftsmanship, and a client-first approach.\nOur elite team delivers a seamless experience from concept to completion, managed with meticulous attention to detail ensuring daily progress, quality, and clear communication.\nWe don’t ask for upfront payments - because trust is earned, not expected. Work begins only once permits are secured and materials are ready, ensuring complete transparency. Clients are fully protected with contractor liability insurance and receive lien waivers with each payment milestone.\nNo two homes and our custom process ensures a tailored renovation experience that delivers luxury without compromise and beauty without the burden.

New kitchen remodel
Kitchen Remodel
Bathroom
Bathroom
My jobs

+8

Response time1 day
Avatar for T&K Builders LLC
T&K Builders LLC
5.0(
4
)

Serving Oswego, IL and surrounding areas

Approved

In business since 2024

Emergency services offered

Warranties offered

"I had a great experience working with T&K Builders. Their team was professional, reliable, and extremely knowledgeable from start to finish. Communication was clear throughout the entire project, timelines were met, and the quality of workmanship truly shows in the final result."
Mall Dr Shell remodel
8 neighbors recently requested a quote
Avatar for MT McCaw, Inc.
MT McCaw, Inc.
5.0(
11
)

Serving Oswego, IL and surrounding areas

Approved

In business since 2015

Free estimates

Warranties offered

"I can't recommend Matt and his company enough to do them justice. They built a screened patio onto our existing home. First of all, they are responsive to every request, on time every day his employees are talented and friendly. They clean up after themselves every. single. day. The work product is absolutely amazing. Matt and his crew have a great eye for detail and design. He collaborated on design changes and ideas and even made our ideas better with suggestions. We never felt like we were bothering him when we asked questions or asked about changes to the original plans. He was open to design ideas and incorporated them into his plans seamlessly. Some contractors get cranky when a customer comes up with a new idea mid-job. Matt didn't blink an eye and made it work. The craftsmanship was perfect and it was a great experience. We are enjoying the new outdoor space and would recommend Matt and his company to anyone."
Wall Niche
New Cabinets & Tops
Fully Renovated Bath
Hall Bathroom
Refinished Cabinets

+27

Response time1 day
1 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Triple Diamond construction
Triple Diamond construction
New to Angi

Serving Oswego, IL and surrounding areas

Approved

Triple Diamond Construction has been in business for more than 20 years. Small business company focusing on quality work. We have been working all throughout the Chicago land area for many years. Exterior and interior work, we care about our customers satisfaction.

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FAQs for addition to existing structure building service projects in Oswego, IL

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 Oswego, IL 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.