#1 Chicago General Contracting Contractor: Pegasus Construction
Home Addition Contractor in Chicago, Illinois
Expand your home with Chicago's most trusted remodeling contractor
Does Your Chicago Home Need Any of These Changes?
- You no longer have enough room for your growing family.
- You want additional space for a new hobby or activity you enjoy.
- The value of your home is limited because of its low square footage.
- There isn’t enough office space for you to work from home.
- You don’t have enough room to entertain guests the way you want.
- You want your home to serve as a multi-general living space.
A Home Addition Contractor in Chicago, Illinois Who Gets You
Finding the right contractor to build an addition on your Chicago 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.
Clear & Proven Process
A successful home remodel starts with a clear plan. With hundreds of satisfied Chicago customers, our proven 6-Step Design-Build Process ensures a smooth and stress-free remodeling experience.
True Cost Accuracy
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.
Your Project, On Time
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.
Common Remodeling Challenges for Homes in Chicago, Illinois Include:
Home additions in Chicago mean working within one of the most tightly regulated building environments in the country. The City’s zoning code governs lot coverage, building height, setbacks, and FAR — all of which vary by zoning district and directly affect what kind of addition is feasible for a given property. Pegasus Construction has completed additions on Chicago homes across multiple neighborhoods and knows how to design within the city’s rules, pull the required permits from the Department of Buildings, and deliver an addition that looks like it was always part of the house.
Navigating Chicago Building Permits for Additions
Home additions in Chicago require permits from the City of Chicago Department of Buildings at 121 N. LaSalle Street. The permit process for additions is more involved than for interior remodels — structural drawings, zoning review, and multiple inspections are standard. We manage the full process from permit application through final sign-off.
Working With Chicago's Lot Coverage Rules
Chicago zoning limits how much of a lot can be covered by a building, which directly affects what lateral additions are possible. Most Chicago properties are better served by vertical additions — second stories or rear bump-outs within the allowed envelope — and the city’s older, well-built housing stock often accommodates these well.
Designing an Addition That Fits the Neighborhood
Every Chicago block has a character — an established roofline, a consistent facade material, a building scale that defines how the street looks. We design additions that integrate with that context rather than standing out as obvious afterthoughts, and we work with homeowners to find the right balance between added space and neighborhood fit.
The Right Approach For Your Chicago Home Addition
Whether you need to add extra room for a growing family or a second level to your home, our team will help you find the best way to expand your space.
Single Level Additions
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.
Second Story Additions
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.
Basement Additions
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.
Design-Build Home Addition Contractor
Our easy-to-follow remodel process will help you expand your living space without the typical home improvement hassle.
1. Work With Our Designers to Plan Your Remodel
2. Our Build Teams Remodel Your Space
3. Gather With Your Friends and Family in Your New Space
Design-Build Contractor For Home Addition in Chicago
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.
Pegasus may not be a good fit for your Chicago Home Addition if.....
- You want to hire the cheapest contractor.
- You prefer to design the project as it is being built.
- You plan to do most of the work yourself.
- You want to begin the construction immediately.
- You want to assemble your own remodeling team.
Contact the Pegasus Construction team about your Chicago Home Addition if.....
- You prefer a balance of cost, quality and experience.
- You understand the value i thorough design plans
- You value high quality craftsmanship.
- You want to take the time to carefully plan your remodel.
- You want a team that works together to guide you.
Schedule and Advisory Call to Discuss your Remodel
Step 1
Schedule an advisory call with a Design Consultant
Step 2
Invite us to your home for an initial evaluation
Step 3
Align on a budget and meet to discuss the design
Fill out This Form to Get Started
Frequently Asked Questions
WHAT PERMITS ARE REQUIRED FOR A HOME ADDITION IN CHICAGO?
Home additions in Chicago require permits from the Chicago Department of Buildings for any structural, plumbing, or electrical work. Depending on scope, zoning approval may also be needed. We handle every permit, inspection, and sign-off from start to finish.
CAN I BUILD AN ADDITION ON A CHICAGO BUNGALOW OR GREYSTONE?
Yes — but bungalows and greystones each have different structural constraints. Before designing any addition, we assess the existing structure, lot coverage limits, and setback requirements to determine what’s possible. We’ve built additions on every Chicago housing type.
HOW LONG DOES A HOME ADDITION TAKE IN CHICAGO?
Most home additions in Chicago take four to eight months from design to final inspection. Chicago permit timelines add two to four months depending on scope and ward. We factor permitting into your project timeline from day one.
HOW IS PEGASUS CONSTRUCTION DIFFERENT FROM OTHER CHICAGO CONTRACTORS?
Pegasus is a design-build firm — designers and builders work together from the start under one contract. We work exclusively in the Chicago area, which means we know the permit process, the zoning rules, and what the city’s housing stock can actually support.
HOW MUCH DOES A HOME ADDITION COST IN CHICAGO?
Home addition costs in Chicago typically range from $100,000 for a small single-level addition to $350,000 or more for a full second story. The biggest variables are scope, structural complexity, and permit requirements. We provide fixed-price contracts before construction begins.
