Expert Home Additions in Chicago
Expand Your Living Space with Confidence
Expand Your Home's Potential with Expert Design and Craftsmanship in Chicago
Trusted Home Additions Contractor in Chicago
Expand Your Living Space with Seamless Home Additions
As a leading contractor for home additions in Chicago, Pegasus Construction is dedicated to transforming your home with expertly designed and flawlessly executed additions. Our design-build approach streamlines the process from concept to completion, ensuring that every detail aligns with your vision and lifestyle. Whether you’re looking to add a new master suite, expand your kitchen, or create more living space, we bring your ideas to life with quality craftsmanship and exceptional project management.
Is Your Home Too Small to Fit Your Lifestyle?
- Your home no longer has enough room for your growing family.
- You don’t have enough room to entertain guests the way you want to be able to.
- The value of your home is limited because of its low square footage.
- The home does not have enough office space to accommodate working from home.
- Add new bedrooms or bathrooms by designing and building a home addition
- The home does not have enough room to serve as a multi-generational living space.
One of a Kind, Just Like You
Ready to start your Home Addition?
Our Services Include:
New Construction
Custom new home construction in Chicago—built with quality, style, and attention to detail.
Home Additions
Seamlessly expand your living space with custom-designed home additions built to match your lifestyle.
Whole House Remodeling
Transform your entire home with a complete remodel that enhances style, functionality, and value.
Kitchen Remodeling
Revitalize your space with a kitchen remodel that blends modern design, functionality, and style.
Bathroom Remodeling
Transform your bathroom into a luxurious, spa-like retreat with modern design and high-quality finishes.
Basement Remodeling
Maximize your home’s potential with a beautifully designed, functional basement renovation.
Exterior Remodeling
Enhance your home’s curb appeal and durability with high-quality exterior remodeling and upgrades.
Construction Consulting
Optimize your project with expert construction consulting—streamlining planning, design, and execution.
How To Get Started
Our Simple Three-Step Plan
1. Schedule An Initial Call
Schedule a meeting with our team to discuss your home remodel. We’ll review your goals and help you explore the best options for your project.
2. Set Up an In-Home Consultation
A remodeling professional will visit your home to meet with you. During this meeting, you can walk them through your space and discuss your ideas and plans.
3. Start Designing Your Dream Home
After your design team has a clear understanding of your vision and goals, you’ll work together to create the design for your home remodel.
Servicing Chicago and the Surrounding Suburbs
Chicago Neighborhoods
Surrounding Suburbs
Our team of experienced builders has a solid track record when it comes to creating exceptional spaces. We ensure that the construction process is stress free, with transparent communication on both deadlines and cost estimates – guaranteeing you’ll no un welcome surprise.
Frequently Asked Questions
How much does a home addition cost in Chicago?
Building out (ground level) runs $150–$305 per square foot. Building up (second floor) runs $300–$700 per square foot — the roof comes off, a floor system is added, and structural reinforcement is typically required. A modest 400 sq ft room addition totals $60,000–$120,000. A full second-story addition on a Chicago bungalow runs $200,000–$400,000 or more. Permit fees alone run $500–$5,000+. Budget a 10–15% contingency; Chicago’s pre-1950 housing stock consistently produces structural surprises once walls open.
Should I build up or build out on my Chicago property?
Building out is cheaper per square foot but requires available yard. Chicago’s tight lots — typically 25–30 feet wide and 125 feet deep — often force the “build up” decision. RS-3 zoning (the most common single-family classification in Chicago) enforces combined side setbacks of roughly 20% of lot width and a rear setback of 30 feet minimum. If your rear setback is already at its limit, a bump-out extension may be the only horizontal option. We verify your specific zoning constraints before any design begins so you’re not surprised late in the process.
Do I need a permit for a home addition in Chicago, and how long does it take?
Yes — always. Standard plan review for a residential addition takes 15–30 business days at best and up to 12–20 weeks for more complex projects. Chicago’s Department of Buildings is one of the most deliberate permit offices in the country. Permit fees for additions run $500–$5,000 depending on project valuation. A permit expediter (cost: $2,000–$8,000) is commonly used for larger projects — they navigate the DOB, catch errors before submission, and often save more time than they cost. We front-load permit submissions so construction starts as early as possible.
Will my addition require a zoning variance in Chicago?
Possibly. If the footprint pushes past setback lines or exceeds the allowed floor-area ratio (FAR) for your zoning district, you need a variance from the Chicago Zoning Board of Appeals. This adds 3–4 months and requires a public hearing, certified mail notification to all neighbors within 250 feet, and a $525+ application fee. Common triggers: additions on narrow lots, projects that expand a pre-existing non-conforming structure, and second-story additions that exceed the district’s maximum FAR. A zoning review before you invest in design drawings is money well spent.
Can I add a second floor to my Chicago bungalow?
Yes, and it’s one of the most popular projects in Chicago. But bungalows were built with minimal foundations and attic framing — a structural engineer must verify whether the existing foundation and walls can bear the added load. Attic floor joists on bungalows almost always require reinforcement before a second story is livable under the Chicago Building Code. Any addition must also be set back a minimum of 20 feet from the front of the building and be compatible in material, style, and proportions. Budget $200,000–$400,000 for a full second floor on a standard Chicago bungalow.
What is a bump-out addition and is it worth it in Chicago?
A bump-out extends one room — typically a kitchen, bathroom, or bedroom — by 2–15 feet without adding a full floor. Costs run $200–$400 per square foot, and even a small bump-out ($15,000–$40,000) requires permits, a new foundation footing, roof tie-in, and insulation. The fixed costs mean small bump-outs have a disproportionately high per-square-foot price. They’re most worth it when a specific room is a functional bottleneck — a kitchen that can’t fit an island, or a bathroom that can’t fit a double vanity. We’ll tell you honestly if the math makes sense for your situation.
Will my home addition affect my property taxes?
Yes. Any permitted addition increases assessed value and triggers a Cook County reassessment. Assessed value is 10% of estimated market value for residential property; expect a meaningful increase in your annual tax bill. In neighborhoods where additions push assessed values significantly higher, annual property tax increases of $3,000–$8,000 are realistic. Factor this ongoing cost into your decision before committing. We can’t predict the exact increase — Cook County’s triennial reassessment cycle means the timing varies — but it’s not an if, it’s a when.
What surprises do homeowners hit during Chicago home additions?
The most common: discovering the existing structure is not level or plumb and requires correction before the addition can tie in cleanly; finding knob-and-tube wiring in walls that must be replaced when they’re opened (adds $3,000–$8,000); freeze-thaw delays when foundation work falls in winter (concrete cannot cure below 40 degrees F); and permit correction cycles that require revised drawings and add 4–8 weeks per round. We front-load our scope work, do thorough site assessment before design, and price contingencies into the contract so these discoveries don’t catch you off-guard.
