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 Mount Prospect home additions
Randhurst Village, Downtown Mount Prospect, Mount Prospect Metra station (UP-NW), Prospect High School, Mount Prospect Golf Club, Melas Park, Mount Prospect Village Hall, Northwest Highway
Neighborhoods we work in
- Forest View
- Kensington Business Center
- Prospect Estates
- Mount Prospect Plaza
- South Mount Prospect
- Indian Grove
- Hearthstone
- Old Orchard
Home additions in Mount Prospect, IL
Home additions in Mount Prospect often involve expanding the footprint of 1950s and '60s ranches and split-levels, which frequently offer generous lot sizes but smaller, more compartmentalized interiors. These projects typically address the need for additional bedrooms, an expanded family room, or a dedicated home office, transforming an outdated layout into one that better suits modern family life. For Cape Cods, a second-story addition or dormer expansion is a common approach, maximizing usable space without significantly altering the ground-level footprint. We frequently integrate new additions seamlessly with the existing structure, matching rooflines and exterior materials to maintain the home's original character and neighborhood aesthetic.
What Mount Prospect homeowners ask for
Mount Prospect homeowners commonly request master suite additions, often featuring walk-in closets and spa-like bathrooms, to upgrade from original, smaller bedrooms. Two-story additions are also popular for growing families, adding multiple bedrooms and a shared bath above an existing single-story section. Many also seek expanded kitchen and dining areas, pushing out exterior walls to create open-concept spaces that better accommodate entertaining and family gatherings.
About Mount Prospect
Mount Prospect's housing stock is largely defined by a postwar boom of 1950s and '60s ranches, split-levels, and Cape Cods, alongside older developments and newer downtown condominiums. These homes offer significant potential for open-concept transformations, modern amenity upgrades, and expanded living spaces.
Mount Prospect grew up around its rail stop — incorporated in 1917 with about 300 residents, then reshaped by a postwar boom that pushed the population from roughly 1,700 in 1940 to nearly 35,000 by 1970. That boom defines much of the housing stock: a prevalence of 1950s and '60s ranches, split-levels, and Cape Cods built on former farmland, alongside homes from Axel Lonnquist's 1920s developments, and newer downtown condominiums from the redevelopment that began in the 1990s around the UP-NW Metra station. Beyond the mid-century core, areas like the Prospect Estates and Old Orchard subdivisions reveal a mix of housing styles, including larger two-story homes and more custom builds from various eras. The older sections of town, with their mature trees and established character, sometimes feature homes that predate the postwar boom, offering different architectural challenges and opportunities for sensitive renovations.
The postwar boom's prevalence of 1950s and '60s ranches, split-levels, and Cape Cods on former farmland often means generous lot sizes for additions, while Axel Lonnquist's 1920s developments and older sections may present tighter lot constraints requiring creative interior reconfigurations or basement finishing. Tying into foundations and rooflines is crucial for these diverse housing styles, from mid-century builds to larger two-story homes in Prospect Estates, ensuring seamless integration. The village's permitting and inspection processes are key for additions, as GS Construction is mindful of maintaining neighborhood aesthetics across areas from Randhurst Village to Melas Park. The requirement for new electrical wiring in conduit, and the municipal water cost-share program for service lines, are important local details influencing project planning. While Mount Prospect lacks extensive historic districts with strict architectural review boards, the village’s review focuses on ensuring projects adhere to codes and maintain the home's character.
For home additions, Mount Prospect’s plan review process scrutinizes structural integrity, foundation design, and how new roofing ties into the existing structure. GS Construction & Remodeling manages all applications and schedules required inspections, including foundation, framing, electrical, plumbing, and final occupancy, ensuring every phase meets village code.
How your Mount Prospect 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 Mount Prospect Love Us
Real reviews from homeowners. Ask us for live phone references.
Greg and Patryk do amazing work and are incredible to work with! GS Construction completed two extensive bathroom renovations for us, including completely reconfiguring layouts and expanding one. Both bathrooms are absolutely beautiful, and they have significantly improved our family's quality of life in our home. Patryk and Greg are great communicators, take pride in their work, and have good attention to detail. Throughout the project, they really listened to us, took the time to understand what we wanted, kept progress going in a timely manner, and provided expert advice/suggestions and help on specific questions along the way. Every one of their team members did high-quality work. We couldn't be happier with the end result, and definitely will hire them for future renovations!
Before & After & Timelapse
What homeowners near Mount Prospect say
“Greg and Patryk do amazing work and are incredible to work with! GS Construction completed two extensive bathroom renovations for us, including completely reconfiguring layouts and expanding one. Both bathrooms are absolutely beautiful, and...”
“We found G&S on Houzz.com and couldn’t be happier. They created a full basement bathroom and did drywall work to enclose a section of the basement to create a small 4th bedroom. Not only was the price reasonable but their communication and...”
“We had an excellent experience working with GS Construction on our primary bedroom and bathroom renovation. From the very beginning, they were incredibly thorough and transparent in outlining the scope of work, budget, and timeline. Everyth...”
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This Palatine kitchen renovation showcases rich dark wood cabinetry, elegant granite countertops, and modern stainless steel appliances.
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Budgeting first? See real 2026 price ranges in our home additions cost guide — and what your Mount Prospect permit will add in our permit guide.
Completed projects around Mount Prospect
GS Construction crews have completed 223 projects within 10 miles of Mount Prospect — part of 429 completed projects across 69 Chicago-area ZIP codes. The map below shows real project density from our records, not a service-area claim.
More Remodeling Services in Mount Prospect
Contact GS Construction
Let's Build Beautiful Spaces Together
GS Construction is a father-and-son construction company, and home additions in Mount Prospect is work Greg and Patryk run themselves. 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
Mount Prospect and surrounding Chicagoland areas