Home Additions Experts
Expert Home Additions Services
GS Construction & Remodeling specializes in professional Home Additions. As a father-son team, we bring decades of combined experience to every project.
From the first walkthrough to the last punch-list item, Greg or Patryk runs your Home Additions project themselves. That means a scope written out line by line instead of one number, permits pulled and handled with your village, and the same faces on site rather than a crew you've never met.
- Specialized Home Additions expertise
- On-site supervision for every project
- Transparent pricing with no surprises
- Quality craftsmanship guaranteed
"Your Home Additions project deserves the best—we deliver it."
Neighborhoods & landmarks near our Forest Lake home additions
Forest Lake (the namesake lake), Forest Lake Community Association beaches, Old McHenry Road, Kemper Lakes Golf Club, Hawthorn Woods Community Park, Lake Zurich High School, Ela Area Public Library, Barrington Metra station (UP-NW)
Home additions in Forest Lake, IL
GS Construction provides kitchen, bathroom, and whole-home remodeling services to homeowners in Forest Lake and throughout the Barrington area. As a family-owned and operated contractor since 2015, we bring decades of experience to every project in the northwest suburbs. Contact us for a free consultation.
Forest Lake permits & building codes for home additions
Forest Lake has no village government, so remodeling permits do not go through a municipal building department — they are issued by the Lake County Planning, Building and Development Department in Libertyville, which requires a building permit for alterations and additions to an existing house. Depending on site conditions, county staff may also require a Site Development Permit, determined when the building permit application is reviewed. GS Construction manages the full permit process for Forest Lake projects, from county application and plan review through final inspections.
How your Forest Lake project runs
ProcessThe same six stages on every job — free in-home estimate through warranty.
Free in-home estimate
Greg or Patryk — the owners, not a salesperson — walk your space, take real measurements, and give you honest feedback on what your budget buys.
Itemized scope & contract
Labor, materials, demolition and disposal priced line by line, not one mystery number. Payment terms and warranty are in the written contract.
Design & selections
Bring your own designer, use our architects and designers, or choose everything yourself. Selections are scheduled ahead so lead times never stall the site.
Permits & scheduling
We pull and manage building, plumbing and electrical permits with your village — typically 1–2 weeks — and hand you a written schedule before demo day.
The build, owner-supervised
Long-standing trade partners working in sequence under daily owner supervision. Your client portal shows the schedule, change orders and current balance.
Walkthrough & warranty
We walk the finished job together, close out every punch-list item, hand over manufacturer paperwork, and your written workmanship warranty starts. Our commitment never expires.
Testimonials
Your Neighbours in Forest Lake Love Us
Real reviews from homeowners. Ask us for live phone references.
Our project turned out better than we expected and as things were going along, we added more projects. Patryk, Greg and their team did a fantastic job. They were always so nice to work with, even suggesting things which was helpful. They never left a project until they thought it was perfect. We did a full kitchen remodel, even closing off a window to move a fridge and pantry to the other side to allow more cabinets and much needed counter space. They widen the entrance and the kitchen seems so much bigger. We think it’s Beautiful! They did laminated floors throughout the first floor, painted all walls and new baseboards. They created a wine bar which was just a cubby hole. They put in a pantry like cubby hole in our laundry room and added cabinets and above wall unit. One of the projects we had them add is new wooden stairs to the 2nd floor, white spindles and railing that curves instead of a wall and laminate floors on the 2nd floor. Other odd and ends that they never hesitated to do. We appreciate all they have done in our home, To us, it’s amazing how nice it is and how it should have been all the years we have lived here. Its exciting to show it off, it feels like a new house. These guys are amazing and would definately recommend them to anyone. Very reliable and easy to get in contact with when needed.
Before & After & Timelapse
What homeowners near Forest Lake say
“Our project turned out better than we expected and as things were going along, we added more projects. Patryk, Greg and their team did a fantastic job. They were always so nice to work with, even suggesting things which was helpful. They ne...”
“GS Construction is a reliable contractor who did top quality work at a reasonable price. We completed a first floor remodel (kitchen renovation with wall removal, half bath remodel, new hardwood floors, updated laundry room) which required...”
“I cannot say enough good things about Greg & Patryk and their team! One of my biggest hesitations about doing such a large project was knowing how hard it is to find a reliable contractor who would give us top quality work at a reasonable p...”
Budgeting first? See real 2026 price ranges in our home additions cost guide — and what your Forest Lake permit will add in our permit guide.
Completed projects around Forest Lake
GS Construction crews have completed 224 projects within 10 miles of Forest Lake — part of 410 completed projects across 68 Chicago-area ZIP codes. The map below shows real project density from our records, not a service-area claim.
More Remodeling Services in Forest Lake
Contact GS Construction
Let's Build Beautiful Spaces Together
GS Construction is a father-and-son construction company specializing in residential remodeling and renovations in Forest Lake. Expect clear communication, quality craftsmanship, and a straightforward plan—reach out today to schedule a free in-home consultation and get a detailed estimate and honest feedback.
- Telephone
- (224) 735-4200
- [email protected]
- Service Area
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Service Area
Forest Lake and surrounding Chicagoland areas