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Find Second story addition builders in Winnetka

Avatar for Matrix Basement Finishing

Matrix Basement Finishing

4.54(
275
)
Approved Pro

Matrix Basement Finishing

4.54(
275
)
Approved Pro
Customers say: Quality work
261 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 4Ever Remodeling

4Ever Remodeling

4.91(
369
)
Approved Pro

4Ever Remodeling

4.91(
369
)
Approved Pro
Customers say: Quality work
Recommended by 97% of Angi customers
Recommended by 97% of HomeAdvisor customers
1289 local quotes requested

Welcome to Stress-Free and High-Quality Remodeling. A great remodeling experience doesn’t happen by accident—it starts with choosing the right company that offers excellence through expert project consultants, professional designers, dedicated project managers, master installers, on-time project completion, and a 3-year project warranty. Our smooth, simple, and innovative approach ensures that every step of your remodeling journey is enjoyable, fulfilling, and frustration-free. From design to management to installation—we do it right. No exceptions. If you're ready to successfully complete your kitchen, bathroom, basement, or home remodeling project, schedule your in-home consultation with one of our friendly team members at 847-809-3355.

"The quality of work is fantastic, and Marek is the best project manager you could ask for. The reason I removed one star is because I believe the quoted contract price, specifically for allowances, can improve. You should expect to add a minimum of $20,000 to your contract price. I also recommend referring to your contract throughout to ensure you aren’t getting an extra charge for something that should be included. Like I said, the quality of work is fantastic, but the up front pricing can improve."

Laura J on November 2025

Welcome to Stress-Free and High-Quality Remodeling. A great remodeling experience doesn’t happen by accident—it starts with choosing the right company that offers excellence through expert project consultants, professional designers, dedicated project managers, master installers, on-time project completion, and a 3-year project warranty. Our smooth, simple, and innovative approach ensures that every step of your remodeling journey is enjoyable, fulfilling, and frustration-free. From design to management to installation—we do it right. No exceptions. If you're ready to successfully complete your kitchen, bathroom, basement, or home remodeling project, schedule your in-home consultation with one of our friendly team members at 847-809-3355.

"The quality of work is fantastic, and Marek is the best project manager you could ask for. The reason I removed one star is because I believe the quoted contract price, specifically for allowances, can improve. You should expect to add a minimum of $20,000 to your contract price. I also recommend referring to your contract throughout to ensure you aren’t getting an extra charge for something that should be included. Like I said, the quality of work is fantastic, but the up front pricing can improve."

Laura J on November 2025


Avatar for Century City Baths

Century City Baths

4.74(
34
)
Approved Pro

Century City Baths

4.74(
34
)
Approved Pro
Customers say: Quality work
Recommended by 94% of Angi customers
Recommended by 94% of HomeAdvisor customers
1426 local quotes requested

Century City Baths is your one stop shop for all your bathroom remodel needs. Whether it's a tub to shower conversion, or an update to a moldy or out of date tub/shower system, or a full gut to your bathroom, we are the complete turn-key solution. Using only the highest quality and most durable materials we are able to design a bathroom that will truly last a lifetime and eliminate most maintenance. Our design consultants work hand-in-hand with our customers to make their dreams come true. Our production team works as a team with you and your design consultant to make the process as quick and efficient as possible. Serving all of Chicagoland, our business model has always been that the best customer is the one that is the most educated. That is why all of our estimates are free of charge and are good for a full calendar year. We are confident that the quality, design, longevity, and above all, affordability will make us a no-brainer to every customer. Book your no-obligation, completely free of charge consultation today, and you can have the bathroom of your dreams too!

"As someone who travels often for work, I don’t have time to micromanage home projects — I need things done right, on time, and with minimal hassle. Century City Baths completely delivered. The team handled the remodel with impressive precision. Every fixture, tile, and finish was installed perfectly, and the space was spotless when I got back. The bathroom feels modern, functional, and low-maintenance — exactly what I wanted. I especially appreciate how durable everything feels; when you’re not home often, you want a space that just works without any issues. Now, coming home after a long business trip feels like stepping into a hotel suite — except it’s mine. Clean, sharp, and built to last. I couldn’t recommend Century City Baths more highly."

Rueben K on November 2025

Century City Baths is your one stop shop for all your bathroom remodel needs. Whether it's a tub to shower conversion, or an update to a moldy or out of date tub/shower system, or a full gut to your bathroom, we are the complete turn-key solution. Using only the highest quality and most durable materials we are able to design a bathroom that will truly last a lifetime and eliminate most maintenance. Our design consultants work hand-in-hand with our customers to make their dreams come true. Our production team works as a team with you and your design consultant to make the process as quick and efficient as possible. Serving all of Chicagoland, our business model has always been that the best customer is the one that is the most educated. That is why all of our estimates are free of charge and are good for a full calendar year. We are confident that the quality, design, longevity, and above all, affordability will make us a no-brainer to every customer. Book your no-obligation, completely free of charge consultation today, and you can have the bathroom of your dreams too!

"As someone who travels often for work, I don’t have time to micromanage home projects — I need things done right, on time, and with minimal hassle. Century City Baths completely delivered. The team handled the remodel with impressive precision. Every fixture, tile, and finish was installed perfectly, and the space was spotless when I got back. The bathroom feels modern, functional, and low-maintenance — exactly what I wanted. I especially appreciate how durable everything feels; when you’re not home often, you want a space that just works without any issues. Now, coming home after a long business trip feels like stepping into a hotel suite — except it’s mine. Clean, sharp, and built to last. I couldn’t recommend Century City Baths more highly."

Rueben K on November 2025


J T General Contracting

4.45(
664
)
Approved Pro

J T General Contracting

4.45(
664
)
Approved Pro
Customers say: Super punctual
2370 local quotes requested
37 years of experience

Owner-operated. Uses subs for plumbing & roofing. Cost is determined by the job. No travel charges. Service fees may apply. May contact through email or cell phone

"Job well done. Awesome. Jim and his crew are very professional and hard working. Have gotten many compliments on my new porch. Love it. Would highly recommend!"

Nancy H on August 2025

Owner-operated. Uses subs for plumbing & roofing. Cost is determined by the job. No travel charges. Service fees may apply. May contact through email or cell phone

"Job well done. Awesome. Jim and his crew are very professional and hard working. Have gotten many compliments on my new porch. Love it. Would highly recommend!"

Nancy H on August 2025


Avatar for Auto Transport - United Freight Of America

Auto Transport - United Freight Of America

4.84(
920
)

Auto Transport - United Freight Of America

4.84(
920
)
Customers say: Quality work
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers

United Freight of America is your all inclusive transport solution. CONTACT US FOR A QUOTE. please include pick up and Drop off locations and vehicle information

"Excellent, no problems. My car was new the first year I used the service and there has never been any damage during the transports. The men picking up and delivering the car have always been pleasant and cooperative. Both Ely and Guy at United Transport has been highly responsive to my needs. I would highly recommend this company."

CLAUDIA H on October 2021

United Freight of America is your all inclusive transport solution. CONTACT US FOR A QUOTE. please include pick up and Drop off locations and vehicle information

"Excellent, no problems. My car was new the first year I used the service and there has never been any damage during the transports. The men picking up and delivering the car have always been pleasant and cooperative. Both Ely and Guy at United Transport has been highly responsive to my needs. I would highly recommend this company."

CLAUDIA H on October 2021


D.W. Nellessen Construction, Inc.

No reviews yet

D.W. Nellessen Construction, Inc.

No reviews yet
15 years of experience

D.W. Nellessen Construction is a family owned and operated carpenter contractor business. All of our employees are professional carpenters that passed a rigorous local and national background check. D.W. Nellessen Construction takes pride in every project to ensure the satisfaction of our clients from start to finish. We sub out work that we do not do, such as electrical, concrete, plumbing, Etc. D.W. Nellessen Construction is an EPA Lead Safe Certified Firm, which means that we are able to test for lead and properly work on structures built before 1978 where lead is present. Remember, on structures built before 1978, have to be tested for lead before any work is done. It is illegal for any person to do work on a structure built prior to 1978 that hasn't been tested for lead and if lead is present it is illegal for any person to work on that structure that is not certified by the EPA. $34,000.00 fine for not complying.

D.W. Nellessen Construction is a family owned and operated carpenter contractor business. All of our employees are professional carpenters that passed a rigorous local and national background check. D.W. Nellessen Construction takes pride in every project to ensure the satisfaction of our clients from start to finish. We sub out work that we do not do, such as electrical, concrete, plumbing, Etc. D.W. Nellessen Construction is an EPA Lead Safe Certified Firm, which means that we are able to test for lead and properly work on structures built before 1978 where lead is present. Remember, on structures built before 1978, have to be tested for lead before any work is done. It is illegal for any person to do work on a structure built prior to 1978 that hasn't been tested for lead and if lead is present it is illegal for any person to work on that structure that is not certified by the EPA. $34,000.00 fine for not complying.


Change Design Group

5.00(
3
)

Change Design Group

5.00(
3
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Our company specializes in elegant and exciting custom kitchen design and implementation. Our over twenty years of experience working with discerning clients helps us create a unique and beautiful solution for each family.

Our company specializes in elegant and exciting custom kitchen design and implementation. Our over twenty years of experience working with discerning clients helps us create a unique and beautiful solution for each family.


COMAIN USA Ltd

No reviews yet

COMAIN USA Ltd

No reviews yet
14 years of experience

COMAIN is a company established since 2011, constantly evolving and adapting to new times and specifically the needs of our customers. COMAIN has focused on providing Maintenance Services to CONDOMINIUMS - INSURANCE COMPANIES And Private Clients. To this, over the years we have been steadily making an Investment in Human and Technical resources to Guarantee all our Customers the Quality service that today's society demands. Mission. Meeting the needs that arise in different areas of Construction, Maintenance and Repair Works, making our work with the highest quality in the shortest time. Vision. Establish our Company as a leader in the needs for Maintenance and Repairs in the City of Chicago - USA. Values​​. Our core values ​are Ethics, Professionalism and Commitment. We are renowned for attention tailored to the needs of all our Customers with high quality standards.

COMAIN is a company established since 2011, constantly evolving and adapting to new times and specifically the needs of our customers. COMAIN has focused on providing Maintenance Services to CONDOMINIUMS - INSURANCE COMPANIES And Private Clients. To this, over the years we have been steadily making an Investment in Human and Technical resources to Guarantee all our Customers the Quality service that today's society demands. Mission. Meeting the needs that arise in different areas of Construction, Maintenance and Repair Works, making our work with the highest quality in the shortest time. Vision. Establish our Company as a leader in the needs for Maintenance and Repairs in the City of Chicago - USA. Values​​. Our core values ​are Ethics, Professionalism and Commitment. We are renowned for attention tailored to the needs of all our Customers with high quality standards.


AVEA Inc.

5.00(
3
)

AVEA Inc.

5.00(
3
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

AVEA is a Home Automation and Security Alarm Contractor specializing in Control4 automation systems and Honeywell intrusion systems.

AVEA is a Home Automation and Security Alarm Contractor specializing in Control4 automation systems and Honeywell intrusion systems.


Creative Construction & Renovation Incorporation

No reviews yet

Creative Construction & Renovation Incorporation

No reviews yet
21 years of experience

General Contracting, Carpentry and Consulting. We have been in business for 35 yrs. all business has been referrals. Our specialty is carpentry and design. We have 3 permanent employees 2 have been with us for 12 & 10 yrs. We hire our own sub-contractors many have been with us for the 35 yrs we've been in business. We require 25% down payment at the beginning of the job with payment increments of 25% as the job progresses. All add work orders will be in writing. We are fully licensed, insured and bonded. No financing. No promotions.

General Contracting, Carpentry and Consulting. We have been in business for 35 yrs. all business has been referrals. Our specialty is carpentry and design. We have 3 permanent employees 2 have been with us for 12 & 10 yrs. We hire our own sub-contractors many have been with us for the 35 yrs we've been in business. We require 25% down payment at the beginning of the job with payment increments of 25% as the job progresses. All add work orders will be in writing. We are fully licensed, insured and bonded. No financing. No promotions.

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FAQs for second story addition building service projects in Winnetka, 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 Winnetka, 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.