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Find Second story addition builders in Oswego

Avatar for Matrix Basement Finishing

Matrix Basement Finishing

3050 N Kennicott Ave
4.54(
275
)
Approved Pro

Matrix Basement Finishing

3050 N Kennicott Ave
4.54(
275
)
Approved Pro
Customers say: Quality work
284 local quotes requested
16 years of experience

We are a locally owned and operated basement finishing specialist servicing the Chicagoland area. Our focus is providing clients with a clear, upfront vision of expectations through a design/build approach. Our free design service provides potential customers with a collaborative consultation geared towards budget, wants, needs and lifestyle.

"The basement looks amazing, the crew did an excellent job. They were efficient, kept to their schedules, and did great work."

Matthew R on October 2025

We are a locally owned and operated basement finishing specialist servicing the Chicagoland area. Our focus is providing clients with a clear, upfront vision of expectations through a design/build approach. Our free design service provides potential customers with a collaborative consultation geared towards budget, wants, needs and lifestyle.

"The basement looks amazing, the crew did an excellent job. They were efficient, kept to their schedules, and did great work."

Matthew R on October 2025


Avatar for Prime Bath

Prime Bath

660 S Broadway
4.96(
28
)
Approved Pro

Prime Bath

660 S Broadway
4.96(
28
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
1603 local quotes requested

Prime Baths and Home Solutions of Illinois is the leader in exceptional custom service for bathroom remodeling projects in the greater Chicagoland area! We provide excellent craftsmanship while offering very competitive pricing, as well as in house installers. No Sub -Contractors! We additionally offer products that are backed up with a lifetime warranty, and have incredible financing offers! Rates as low as 0%. Contact us today to set up a FREE in home quote. We look forward to hearing from you!

"The men made a great new shower area! They cleaned up as well! I called the office to try to arrange the balance of work. Haven’t heard back from anyone - but yes! The work great!"

Jean H on November 2024

Prime Baths and Home Solutions of Illinois is the leader in exceptional custom service for bathroom remodeling projects in the greater Chicagoland area! We provide excellent craftsmanship while offering very competitive pricing, as well as in house installers. No Sub -Contractors! We additionally offer products that are backed up with a lifetime warranty, and have incredible financing offers! Rates as low as 0%. Contact us today to set up a FREE in home quote. We look forward to hearing from you!

"The men made a great new shower area! They cleaned up as well! I called the office to try to arrange the balance of work. Haven’t heard back from anyone - but yes! The work great!"

Jean H on November 2024


Avatar for Genstone Construction

Genstone Construction

900 S Frontage Rd Ste. 310, Woodridge IL 60517
5.00(
1
)
Approved Pro

Genstone Construction

900 S Frontage Rd Ste. 310, Woodridge IL 60517
5.00(
1
)
Approved Pro
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
797 local quotes requested

At Genstone Construction, 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. Our elite team - comprised of seasoned Estimators, Field Managers, and Repair Specialists - delivers a seamless, concierge-level experience from concept to completion. Each project is managed with meticulous attention to detail, with a dedicated Field Manager ensuring daily progress, quality, and clear communication. We 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 and confidence. Clients are fully protected with contractor liability insurance and receive lien waivers with each payment milestone. No two homes — or homeowners — are alike. That’s why every renovation begins with a deep understanding of your goals, preferences, and lifestyle. Our custom design-build process ensures a tailored renovation experience that delivers luxury without compromise and beauty without the burden.

"Fantastic experience. They did a great job. From initial contact to completion was under 2 weeks. Highly recommend."

Mike G on August 2024

At Genstone Construction, 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. Our elite team - comprised of seasoned Estimators, Field Managers, and Repair Specialists - delivers a seamless, concierge-level experience from concept to completion. Each project is managed with meticulous attention to detail, with a dedicated Field Manager ensuring daily progress, quality, and clear communication. We 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 and confidence. Clients are fully protected with contractor liability insurance and receive lien waivers with each payment milestone. No two homes — or homeowners — are alike. That’s why every renovation begins with a deep understanding of your goals, preferences, and lifestyle. Our custom design-build process ensures a tailored renovation experience that delivers luxury without compromise and beauty without the burden.

"Fantastic experience. They did a great job. From initial contact to completion was under 2 weeks. Highly recommend."

Mike G on August 2024


Avatar for Craftsman Builders Inc.

Craftsman Builders Inc.

16031 Aberdeen St
5.00(
16
)
Approved Pro

Craftsman Builders Inc.

16031 Aberdeen St
5.00(
16
)
Approved Pro
Customers say: Quality work
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
79 local quotes requested

EXPERIENCED BASEMENT REMODELING**Specializing and perfecting BASEMENT REMODELING for over 30 years!** You can trust in us! Family owned and operated spanning over three generations. We don't use subcontractors on our jobs, and I am personally there to work and oversee each and every job. We have our own licensed electrician and plumber, as well as a specialist in taping and mudding. We Pay Close Attention to Detail We believe that attention to detail and customer service sets us apart from our competition, allowing us to continue focusing on each client as if they were our only customer. We use metal studs in our framing work, and I will be happy to discuss with you why this should be the only framing material you should use in your basement. We recognize that our customers are making an investment in their homes, and it is very important to us that you have a good experience from the beginning to end. Not only professional and quality workmanship, but great customer service too.

"Larry and his crew were very professional. I appreciated his suggestions which made the job even better. He was always here when he said he would be and the finished basement is beautiful."

Don W on June 2021

EXPERIENCED BASEMENT REMODELING**Specializing and perfecting BASEMENT REMODELING for over 30 years!** You can trust in us! Family owned and operated spanning over three generations. We don't use subcontractors on our jobs, and I am personally there to work and oversee each and every job. We have our own licensed electrician and plumber, as well as a specialist in taping and mudding. We Pay Close Attention to Detail We believe that attention to detail and customer service sets us apart from our competition, allowing us to continue focusing on each client as if they were our only customer. We use metal studs in our framing work, and I will be happy to discuss with you why this should be the only framing material you should use in your basement. We recognize that our customers are making an investment in their homes, and it is very important to us that you have a good experience from the beginning to end. Not only professional and quality workmanship, but great customer service too.

"Larry and his crew were very professional. I appreciated his suggestions which made the job even better. He was always here when he said he would be and the finished basement is beautiful."

Don W on June 2021


Avatar for MidAmerica Homes

MidAmerica Homes

5.00(
4
)
Approved Pro

MidAmerica Homes

5.00(
4
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
484 local quotes requested

Our mission is to be a general contractor that brings back the personal touch with our customers. We will build a relationship that will last a lifetime once you see our quality work. We're passionate about delivering an exceptional experience. When you hire us, you're hiring a team of professionals who are trained and skilled to deliver lasting value to your home. As a locally owned and operated business we feel invested in our clients and constantly strive for customer satisfaction. We won't leave until the job is done right! Call or click to schedule an estimate today!

"I was highly impressed with Geoff and his team. They were very detail-oriented and knowledgeable in all areas. Geoff is extremely customer-centric and strives for excellence. We are already planning our next project for October."

Kelly K on August 2024

Our mission is to be a general contractor that brings back the personal touch with our customers. We will build a relationship that will last a lifetime once you see our quality work. We're passionate about delivering an exceptional experience. When you hire us, you're hiring a team of professionals who are trained and skilled to deliver lasting value to your home. As a locally owned and operated business we feel invested in our clients and constantly strive for customer satisfaction. We won't leave until the job is done right! Call or click to schedule an estimate today!

"I was highly impressed with Geoff and his team. They were very detail-oriented and knowledgeable in all areas. Geoff is extremely customer-centric and strives for excellence. We are already planning our next project for October."

Kelly K on August 2024


Avatar for J K Complete Remodeling & Construction Inc

J K Complete Remodeling & Construction Inc

304 King Ln
4.68(
308
)
Approved Pro

J K Complete Remodeling & Construction Inc

304 King Ln
4.68(
308
)
Approved Pro
Customers say: Super punctual
Recommended by 90% of Angi customers
Recommended by 90% of HomeAdvisor customers
190 local quotes requested

8 employees. Cost is determined by the job. No travel charges. DBA JK Complete Remodeling. JK Complete Remodeling and Construction sub-contracts all of our Electrical work through Swiss Electric. Swiss Electric is owned and operated by Gilbert Bottcher, and is located at 1473 Driftwood Ave, Palatine, IL 60067, and can be reached at (312) 342-4333. Their IL Electrical Contractor License number is SE6594. JK Complete Remodeling & Construction sub-contracts all of our Plumbing through Aquarius Plumbing Services. Aquaius Plumbing is owned and operated by Mariusz Gapinski, and is located at 406 W. Marion St., Prospect Heights, IL, 60070, and can be reached at 847-409-7894. Aquarius Services is licensed and bonded by the City of Chicago. License #058-180662.

"I’ve always wanted a second bathroom. I contacted JK Complete R&C. Jack came to my home and assessed the would be project. Jack gave me a reasonable price, start and proposed finish date. Then I met the crew John, Mike and Ziggy. We had a great relationship. Everything that was to be accomplished was explained to me on a daily bases. By the end of the project we had a bond and it felt like family. I also learned quite a bit in the process. I am total fascinated with my new bathroom. I have already recommended JK Complete to family members."

Marva L on June 2024

8 employees. Cost is determined by the job. No travel charges. DBA JK Complete Remodeling. JK Complete Remodeling and Construction sub-contracts all of our Electrical work through Swiss Electric. Swiss Electric is owned and operated by Gilbert Bottcher, and is located at 1473 Driftwood Ave, Palatine, IL 60067, and can be reached at (312) 342-4333. Their IL Electrical Contractor License number is SE6594. JK Complete Remodeling & Construction sub-contracts all of our Plumbing through Aquarius Plumbing Services. Aquaius Plumbing is owned and operated by Mariusz Gapinski, and is located at 406 W. Marion St., Prospect Heights, IL, 60070, and can be reached at 847-409-7894. Aquarius Services is licensed and bonded by the City of Chicago. License #058-180662.

"I’ve always wanted a second bathroom. I contacted JK Complete R&C. Jack came to my home and assessed the would be project. Jack gave me a reasonable price, start and proposed finish date. Then I met the crew John, Mike and Ziggy. We had a great relationship. Everything that was to be accomplished was explained to me on a daily bases. By the end of the project we had a bond and it felt like family. I also learned quite a bit in the process. I am total fascinated with my new bathroom. I have already recommended JK Complete to family members."

Marva L on June 2024


Top Hat Services

New on HomeAdvisorNew on HomeAdvisor
Approved Pro

Top Hat Services

New on HomeAdvisorNew on HomeAdvisor
Approved Pro
797 local quotes requested

Welcome to Top Hat Services, we look forward to discussing your home improvement project, please reach out to us anytime!

Welcome to Top Hat Services, we look forward to discussing your home improvement project, please reach out to us anytime!


Avatar for KSRP Construction, Inc.

KSRP Construction, Inc.

38W369 Lea Dr
4.69(
16
)
Approved Pro

KSRP Construction, Inc.

38W369 Lea Dr
4.69(
16
)
Approved Pro
Customers say: Quick response
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers
2876 local quotes requested

As a Remodeling and Roofing company, dedicated to providing premier customer service, it is important to us to deliver unparalleled workmanship on every assignment.​ We are accredited, licensed, bonded, and insured. With our experience, contractors and expertise, we can provide the support your project needs for every construction project. We will work with you to meet deadlines and coordinate with other related projects. We will maintain open communication with you to keep you up to date on the status of your job. We do this to guarantee that the project is completed according to your preferences. We combine our industry knowledge, the highest quality building supplies and equipment, and our dedication to deliver exceptional service to our clients. We will stay in touch, keeping you up to date on both the paperwork and renovation process with our general contractor.

"Absolutely the best company for all your construction needs. Outstanding deck repair and painting. I am thrilled about the outcome."

Robert T on May 2025

As a Remodeling and Roofing company, dedicated to providing premier customer service, it is important to us to deliver unparalleled workmanship on every assignment.​ We are accredited, licensed, bonded, and insured. With our experience, contractors and expertise, we can provide the support your project needs for every construction project. We will work with you to meet deadlines and coordinate with other related projects. We will maintain open communication with you to keep you up to date on the status of your job. We do this to guarantee that the project is completed according to your preferences. We combine our industry knowledge, the highest quality building supplies and equipment, and our dedication to deliver exceptional service to our clients. We will stay in touch, keeping you up to date on both the paperwork and renovation process with our general contractor.

"Absolutely the best company for all your construction needs. Outstanding deck repair and painting. I am thrilled about the outcome."

Robert T on May 2025


Avatar for Top Hat Services

Top Hat Services

New on HomeAdvisorNew on HomeAdvisor
Approved Pro

Top Hat Services

New on HomeAdvisorNew on HomeAdvisor
Approved Pro
827 local quotes requested

Welcome to Top Hat Services, we look forward to discussing your home improvement project, please reach out to us anytime!

Welcome to Top Hat Services, we look forward to discussing your home improvement project, please reach out to us anytime!


Avatar for Envy Home Services, Inc.

Envy Home Services, Inc.

575 South Arthur Avenue
4.86(
109
)
Approved Pro

Envy Home Services, Inc.

575 South Arthur Avenue
4.86(
109
)
Approved Pro
Customers say: Quality work
Recommended by 94% of Angi customers
Recommended by 94% of HomeAdvisor customers
287 local quotes requested

Welcome to Envy Home Services, Chicagoland’s trusted designer and installer of All Season Sunrooms, Three Season Sunrooms, Screen Rooms, Patio Covers, Pergolas, Awnings, and more. Homeowners come to Envy for their home improvement needs because they want their project to be completed on time, within budget and worry-free. Our mission starts with designing the right living space just for you. Then, with careful planning, our professional installation team gets to work. The transformation of an underused or unattractive space takes hold before your eyes, and you’ll see the new space just as you imagined. If you’re looking for a sunroom, room addition, Patio Cover or Pergola you’ll love the final product the Envy team will deliver for you. With a focus on personalized service, we’ll design the space and complete the final touches as if it’s our own home. A family-owned, local company, we’ll go the extra mile to earn your business.

"Working with Envy Home Services was smooth, professional, and enjoyable from start to finish. We had long dreamed of adding a sunroom for our growing family to relax, eat, play, and enjoy the sunlight—and they delivered beyond expectations. Communication was excellent! Every step was clearly explained, and we always felt informed. Whether by text, phone, or in-person, they were responsive, friendly, and professional. They truly listened to our ideas and concerns. Even with permitting delays from our village, Envy stayed on schedule and completed the project right on time. Pricing was fair and transparent. We received high-quality work at a reasonable price, with a flexible payment plan and financing. Most importantly, the finished sunroom is stunning! It blends seamlessly with our home and has become our favorite space. The craftsmanship and detail are top-notch. We couldn’t be happier and highly recommend Envy Home Services to anyone seeking a trustworthy, skilled contractor."

James Q on August 2025

Welcome to Envy Home Services, Chicagoland’s trusted designer and installer of All Season Sunrooms, Three Season Sunrooms, Screen Rooms, Patio Covers, Pergolas, Awnings, and more. Homeowners come to Envy for their home improvement needs because they want their project to be completed on time, within budget and worry-free. Our mission starts with designing the right living space just for you. Then, with careful planning, our professional installation team gets to work. The transformation of an underused or unattractive space takes hold before your eyes, and you’ll see the new space just as you imagined. If you’re looking for a sunroom, room addition, Patio Cover or Pergola you’ll love the final product the Envy team will deliver for you. With a focus on personalized service, we’ll design the space and complete the final touches as if it’s our own home. A family-owned, local company, we’ll go the extra mile to earn your business.

"Working with Envy Home Services was smooth, professional, and enjoyable from start to finish. We had long dreamed of adding a sunroom for our growing family to relax, eat, play, and enjoy the sunlight—and they delivered beyond expectations. Communication was excellent! Every step was clearly explained, and we always felt informed. Whether by text, phone, or in-person, they were responsive, friendly, and professional. They truly listened to our ideas and concerns. Even with permitting delays from our village, Envy stayed on schedule and completed the project right on time. Pricing was fair and transparent. We received high-quality work at a reasonable price, with a flexible payment plan and financing. Most importantly, the finished sunroom is stunning! It blends seamlessly with our home and has become our favorite space. The craftsmanship and detail are top-notch. We couldn’t be happier and highly recommend Envy Home Services to anyone seeking a trustworthy, skilled contractor."

James Q on August 2025

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FAQs for second story addition building service projects in Oswego, IL

For many homeowners, building up is worth the expense because it provides the extra bedrooms or living areas that can’t be accommodated within the existing footprint. A larger, updated home often commands a higher resale price, recouping a sizable share of the project cost while allowing you to stay in the neighborhood you love. Run the numbers with a real estate agent and contractor to ensure the expected return and day-to-day benefits align with your goals.

Whether it makes more sense to build up or out depends on your lot, budget, and local code. Building up preserves yard space and involves less foundation work, but you may need to vacate the home during construction. Building out avoids staircases and can proceed while you stay put; however, it encroaches on the yard and may face setback limits. Compare both options with your contractor before making a decision.

A structural engineer will first inspect the existing foundation for cracks, footings, and load capacity. Depending on the findings, the crew may pour new concrete footings, install steel or concrete piers, add reinforced beams, or tie additional rebar into the slab. These upgrades redistribute the weight of the new floor and bring the structure up to code. Your contractor will outline the specific reinforcement plan and timeline once the engineering report is complete.

The Oswego, IL homeowners’ guide to second story addition building services

From average costs to expert advice, get all the answers you need to get your job done.

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