#1 Chicago General Contracting Contractor: Pegasus Construction
Finding the right contractor to build an addition on your Long Grove home can be a challenge. It’s important to thoroughly vet and interview your options before deciding who to hire.
To ensure that you find a contractor that meets your needs and budget expectations, download our free 3-Step Guide to Choosing A Remodeling Contractor.
Whether you decide to hire our team at Pegasus Construction or another local remodeler, you can use this helpful guide to be confident knowing you have your bases covered.
A successful home remodel starts with a clear plan. With hundreds of satisfied Long Grove customers, our proven 6-Step Design-Build Process ensures a smooth and stress-free remodeling experience.
1 in 3 remodels exceed their budget—but yours doesn’t have to. At Pegasus Construction, we’ve created a budgeting system to eliminate surprise costs, with our projects averaging just a 5% variance from the initial budget to the final price.
Feel confident knowing your home remodel is managed by experts. Each project is assigned a dedicated team, led by an experienced master carpenter, ensuring timely completion. While other companies face delays of weeks or months, our projects average less than a 2-day difference from the original schedule.
Long Grove homeowners almost always add on rather than move. The lots are large, wooded, and private, with room to expand. Most homes here are custom-built traditionals and transitionals on an acre or more, so additions tend to be ambitious: primary-suite wings, great-room expansions, and second stories. The constraints are the Village of Long Grove’s zoning and the private well and septic many homes rely on. We design Long Grove additions to clear both and to match the home’s custom character.
If you find yourself needing more living space and want to expand your home rather than upsize, a single-level addition is the place to start.
The most cost-effective way to add living space, a single-level addition attaches to the side of the home. They typically require expanding the home’s foundation, and are most often used for expanding kitchens, living rooms, or home offices.
Single-level additions are typically limited by lot size and setback laws. For this reason, these additions are better fit for homes on larger lots.


Want to expand your home without expanding its footprint? Many homeowners don’t realize it’s possible to expand their living space by adding a second story.
Although often more expensive than single-level additions, second-story additions can be a great solution for homeowners who need additional living space but don’t have enough yard space to build out.
Second-story additions tend to be more technically challenging, as they require extensive engineering and planning to ensure that they don’t disrupt the design or aesthetic of the existing structure.
For some homeowners, a basement addition is the best way to expand their living space. This often involves either raising the home or digging out the crawl space.
Homeowners who go this route often use their basement for additional bedrooms, a recreational space, or an Accessory Dwelling Unit (ADU).
Basement additions are among the most expensive methods of adding onto a home. Extensive manual labor, planning, and permitting all contribute to the high cost of basement additions.

At Pegasus Construction our mission is to change the lives of homeowners by helping them expand their homes with custom home additions built just for them. However, we also recognize that not every home addition project is the right fit for our team. Here is how to tell if Pegasus Construction is or isn’t a good fit for your home addition project.
Schedule an advisory call with a Design Consultant
Invite us to your home for an initial evaluation
Align on a budget and meet to discuss the design
Hear that this client had to say!
“…I felt truly heard and valued during our conversation. I came to your company with questions about our projects, and Greg provided thoughtful, flexible scenarios and options to help us achieve our goals. He genuinely seemed to care about me and my family as real people.”
Often yes. Many Long Grove homes are custom-built with foundations and framing that can carry a second story, but it has to be verified. We open an inspection point, evaluate the foundation and load paths, and bring in a structural engineer before committing to a second-floor design.
Sometimes. If your Long Grove home has usable attic volume, dormers can add bedroom or bath space for less than a ground-up addition. But many homes here have the lot space to expand outward affordably too. We compare both against your goals and budget before recommending a direction.
In Long Grove, additions typically run from about $200 to $350 per square foot, with custom-match construction and high-end finishes pushing toward the upper end. A primary-suite wing or great-room expansion is a larger investment than a simple bump-out. We provide a fixed, line-item budget after design.
Permitting through the Village of Long Grove generally takes a few weeks to a couple of months, depending on scope and whether zoning variances or septic review are involved. We prepare complete drawings and handle the submittal and any village review to keep it moving.
Matching a custom Long Grove home takes care. We document the existing rooflines, masonry, siding, window proportions, and trim profiles, then specify materials to match. The goal is an addition that looks original, not bolted on, which also protects resale value.
The Village of Long Grove enforces setbacks, lot-coverage limits, and height restrictions that vary by zoning district and lot size. Long Grove’s large lots usually leave room to work, but well, septic, and easement locations also shape where you can build. We confirm all of it before finalizing the design.
Choosing the right contractor for your remodel can be simple. Use our free guide to walk you through 3 easy steps to select the perfect contractor.