Northstar Construction designs and builds custom garages for Quad Cities homeowners who need real storage, real workspace, or real vehicle protection. Not the cheap production garages you see going up in tract subdivisions. Actual builds with proper foundations, code-compliant framing, and finish work that matches the house.
A garage is not a shed with a car door. Done right, it’s a permanent structure that protects vehicles, extends your usable square footage, and adds real value to your property. Done wrong, it’s a rushed pole barn with a leaky roof, an uneven slab, and a resale hit for the next buyer.
Quad Cities homeowners hire Northstar Construction when they want a garage that lasts. We handle the whole build: foundation, framing, roofing, siding, doors, electrical, and interior finish. Same crew that builds our custom homes and additions builds our garages.
Detached Garages
Standalone garages built separate from the home. Common footprints run from single-car (12×20) to three-car (36×24) and larger. Detached builds work well for homeowners who want a workshop, extra storage, or a garage that doesn’t tie into the home’s roofline.
Attached Garages
Garages built as extensions of the existing home. Attached builds require tying into the home’s foundation, exterior wall, roof, and often electrical panel. Northstar handles the structural work, the exterior match, and the interior door and access details.
Oversized Garages
Extra-deep or extra-wide garages built for trucks, RVs, boats, workshops, or serious storage. Common oversized footprints run 24×36 to 30×40 or larger. Ceiling heights above 10 feet are common in oversized builds for lift or overhead storage.
Two-Story Garages
Garages with usable second stories. Common uses include home offices, workshops, guest rooms, or bonus storage. Two-story garages require engineered structural design and often trigger different permit requirements than single-story builds.
Garage Additions and Expansions
Adding a bay to an existing garage or extending the footprint of an attached garage. Common when families outgrow a two-car and want a third bay, or when a single-car garage needs to become a two-car.
Custom Garages With Living Space
Garages built with attached bonus rooms, ADUs, or guest quarters above the garage. Requires full mechanical systems (heating, cooling, plumbing if applicable), egress, and separate permit review.
Workshop Garages
Garages built as functional workshops. Common features include 20-amp or 30-amp dedicated circuits, epoxy-coated concrete floors, upgraded lighting, insulation, heating, and built-in storage systems.
Garage Rebuilds and Replacements
Removing an old or damaged garage and building a new one on the existing footprint or a modified footprint. Common when older detached garages are past their useful life.
A real garage build involves more trades than most homeowners expect. Here’s what Northstar coordinates in every project:
We Build Garages, Not Sheds With Doors
Real foundations. Proper framing. Code-compliant electrical. Roofing tied into the home when required. Not a rushed pole barn dressed up to look like a garage.
We Match Your Home’s Architecture
Matching siding, matching roof pitch, matching trim details. Attached garages should read as part of the house. Detached garages should complement it. Neither should look like an afterthought.
We Pull the Permits
Garage construction requires building permits in every Quad Cities municipality. Our team handles Moline, Rock Island, East Moline, Davenport, and Bettendorf permit processes.
Same Team, Every Build
Our framers, foundation crew, and finish carpenters work for Northstar. We don’t hire whoever’s cheapest that week.
Licensed in Illinois and Iowa
Fully licensed, bonded, and insured on both sides of the river.
Setback Requirements Vary by Municipality
Every Quad Cities city has its own setback rules for detached structures. Rock Island, Moline, Davenport, Bettendorf, and East Moline all have different requirements. Our team confirms setbacks before finalizing your garage location.
Zoning and Lot Coverage
Adding a garage or expanding one can push you over your lot’s maximum coverage limits. Corner lots and small urban lots in older Rock Island and Moline neighborhoods are especially tight. We check zoning before design.
Frost Line for Foundations
The Quad Cities frost line runs about 42 inches. Slab-on-grade garages need proper edge insulation or thickened footings to prevent frost heave.
Utility Locates
Underground utility locates get called in before any foundation work. Our team handles the coordination.
HOA Rules
Newer Bettendorf and West Davenport neighborhoods often have HOA rules governing detached garage size, roof pitch, siding, and paint color. We work within HOA requirements when applicable.
Property Tax Implications
Adding a garage typically affects your property’s assessed value, especially for large or two-story builds. Scott County (Iowa) and Rock Island County (Illinois) handle assessments differently. We can walk through what to expect during the consultation.
Northstar Construction builds garages throughout the entire Quad Cities region:
We proudly serve homeowners across the Quad Cities including Rock Island, East Moline, Silvis, Coal Valley, Davenport, Bettendorf, and Eldridge. Every project is built by our in-house team with attention to detail, clear communication, and pride in workmanship.
Cost depends on size, foundation type, exterior finish, and whether the garage is detached, attached, or two-story. We provide detailed written estimates after an on-site consultation.
Most detached garages take 6 to 10 weeks of active construction. Attached garages run 8 to 14 weeks because of the tie-in to the existing home. Two-story or oversized builds run longer. Design and permit time adds 4 to 8 weeks on the front end.
Yes. Every Quad Cities municipality requires a building permit for garage construction. Northstar pulls every required permit for your city.
Not usually. Northstar handles design in-house for most garage builds. Complex or oversized builds sometimes require engineered drawings, which we coordinate as part of the project.
Yes. Matching siding, roof pitch, trim, and paint color is standard on attached and detached builds. If your existing materials are discontinued, we source close matches.
Northstar coordinates garage door selection and installation as part of the build.
Yes. Two-story garages with workshops, offices, or guest space are one of our specialty builds. Requires structural engineering and separate permit review.
Northstar Construction builds custom garages for Quad Cities homeowners who want the job done right the first time. Whether you need a detached workshop, an attached third bay, or a full oversized build with living space above, our team handles the whole project.
