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Find Second story addition builders in Crystal Lake

Avatar for Sentri Homes

Sentri Homes

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Approved Pro

Sentri Homes

New on HomeAdvisorNew on HomeAdvisor
Approved Pro
1961 local quotes requested
2 years of experience

Sentri Homes is a full-service contractor delivering high-end home additions, whole-home remodels, new custom builds, luxury kitchens, structural framing, roof replacements, and every major renovation. We assign a dedicated project manager to every job, deliver meticulous craftsmanship with clear communication, and back our work with an industry-leading warranty to ensure complete peace of mind on your largest investments. Our in-house team of licensed builders and master craftsmen consistently earns 5-star reviews by turning big visions into stunning, high-value homes—when you need one trusted partner who truly does it all, we’re the proven choice.

Sentri Homes is a full-service contractor delivering high-end home additions, whole-home remodels, new custom builds, luxury kitchens, structural framing, roof replacements, and every major renovation. We assign a dedicated project manager to every job, deliver meticulous craftsmanship with clear communication, and back our work with an industry-leading warranty to ensure complete peace of mind on your largest investments. Our in-house team of licensed builders and master craftsmen consistently earns 5-star reviews by turning big visions into stunning, high-value homes—when you need one trusted partner who truly does it all, we’re the proven choice.


Paramount Construction

No reviews yet

Paramount Construction

No reviews yet
15 years of experience

Paramount Construction employs 20 people from management to skilled professionals who are trained in the fields from breaking ground to finishing. We accept all major credit cards and will work with you to make your project possible.

Paramount Construction employs 20 people from management to skilled professionals who are trained in the fields from breaking ground to finishing. We accept all major credit cards and will work with you to make your project possible.


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


AM PM Electric

5.00(
1
)

AM PM Electric

5.00(
1
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Owner operated. No subs. Cost is determined by an hourly or flat rate, or by the job. No additional charge for after-hours service. No travel charges.

Owner operated. No subs. Cost is determined by an hourly or flat rate, or by the job. No additional charge for after-hours service. No travel charges.


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.


CB Home Improvement & Maintenance

5.00(
2
)

CB Home Improvement & Maintenance

5.00(
2
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

CB Home Improvement & Maintenance is a new home improvement & maintenance company, it is owned and operated by career construction professionals with over 30 years experience in the home building and home improvement industry. Our resumes include working with several national home builders, real estate developers, and commercial construction companies. This has provided CB Home Improvement & Maintenance with years of experience working with homeowners, subcontractors, and municipaities. CB Home Improvement & Maintenance has the willingness to do the small projects and the ability and knowledge to handle the largest projects. CB Home Improvement & Maintenance is primarliy operating in Lake and Mchenry counties, but we do have a subcontractor base stretching from Southern Wisconsin to Northwest Indiana. This allows CB Home Improvement & Maintenance to meet homeowner needs throughout the entire Chicago land area. CB Home Improvement & Maintenance understands that the decision to make an improvement can be difficult. You have a lot of questions and we will be here to clearly answer all of them. All estimates are free, and we provide a limited 12 month warranty on all our improvements. CB Home Improvment & Maintenance is committed to providing our homeowners with the best Service, & Quality and we will earn your Trust.

CB Home Improvement & Maintenance is a new home improvement & maintenance company, it is owned and operated by career construction professionals with over 30 years experience in the home building and home improvement industry. Our resumes include working with several national home builders, real estate developers, and commercial construction companies. This has provided CB Home Improvement & Maintenance with years of experience working with homeowners, subcontractors, and municipaities. CB Home Improvement & Maintenance has the willingness to do the small projects and the ability and knowledge to handle the largest projects. CB Home Improvement & Maintenance is primarliy operating in Lake and Mchenry counties, but we do have a subcontractor base stretching from Southern Wisconsin to Northwest Indiana. This allows CB Home Improvement & Maintenance to meet homeowner needs throughout the entire Chicago land area. CB Home Improvement & Maintenance understands that the decision to make an improvement can be difficult. You have a lot of questions and we will be here to clearly answer all of them. All estimates are free, and we provide a limited 12 month warranty on all our improvements. CB Home Improvment & Maintenance is committed to providing our homeowners with the best Service, & Quality and we will earn your Trust.


Bluebird Builders Inc

5.00(
6
)

Bluebird Builders Inc

5.00(
6
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

We’ve been in the construction industry for over 15 years, specializing in residential construction. All our experienced staff are certified and have been with us for at least 3 years. We only use the best materials available, and we hold ongoing training and safety seminars to ensure the procedures we use are up to date in style and technique. We are fully licensed, bonded and insured. No project is finished until our customer is completely satisfied. Most important, we work hard to finish each project on time and under budget.

We’ve been in the construction industry for over 15 years, specializing in residential construction. All our experienced staff are certified and have been with us for at least 3 years. We only use the best materials available, and we hold ongoing training and safety seminars to ensure the procedures we use are up to date in style and technique. We are fully licensed, bonded and insured. No project is finished until our customer is completely satisfied. Most important, we work hard to finish each project on time and under budget.


Avatar for Verona Design Build

Verona Design Build

5.00(
1
)

Verona Design Build

5.00(
1
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

A Boutique Design Build firm - with a Tailor Crafted approach to Remodeling, Renovations, Additions and New Construction. We build Quality, Trust and Customer Satisfaction - by Design. Our great relationship with suppliers give us the best pricing to fit your budget. 30 Years Industry Experience

"Good. Went great."

Steve B on April 2018

A Boutique Design Build firm - with a Tailor Crafted approach to Remodeling, Renovations, Additions and New Construction. We build Quality, Trust and Customer Satisfaction - by Design. Our great relationship with suppliers give us the best pricing to fit your budget. 30 Years Industry Experience

"Good. Went great."

Steve B on April 2018


HR Springborn LLC

5.00(
1
)

HR Springborn LLC

5.00(
1
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

General Contractor, Remodeling & Carpentry

General Contractor, Remodeling & Carpentry


JPN Services INC.

No reviews yet

JPN Services INC.

No reviews yet
Free onsite estimate

We offer 18 month and 49 month financing on ALL flooring (carpet, tile, hardwood, laminate and vinyl) Currently offering Carpet from $3/sq ft (includes take up, haul away, tax, insatallation) all new ordes receive a free gift, free estimate and referral rewards. Also offering 20-30% of on all flameess fireplaces.

We offer 18 month and 49 month financing on ALL flooring (carpet, tile, hardwood, laminate and vinyl) Currently offering Carpet from $3/sq ft (includes take up, haul away, tax, insatallation) all new ordes receive a free gift, free estimate and referral rewards. Also offering 20-30% of on all flameess fireplaces.

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FAQs for second story addition building service projects in Crystal Lake, 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 Crystal Lake, 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.