
Erlinger Construction Company Inc.
Erlinger Construction Company Inc.. Construction company. 2502 S Belt W, Belleville, IL 62226
Looking for the best backyard cottage builders in Belleville, Illinois? Our directory features 23 vetted backyard cottage builders serving the Belleville area. Whether you're planning a new ADU construction, garage conversion, or backyard cottage, find the right builder for your project.

Erlinger Construction Company Inc.. Construction company. 2502 S Belt W, Belleville, IL 62226

Loughman Builders. Contractor. 1917 Scheel St, Belleville, IL 62221, United States

Makers Construction. Remodeler

Aleto Construction Group. Contractor

J Gladu Construction Inc. Construction company. 425 E State St, Westfield, IL 62474

Musick House Leveling. Concrete contractor. 614 N Douglas Ave, Belleville, IL 62220, United States

Liston Design Build. Remodeler. 1106 1st Capitol Dr, St Charles, MO 63301

CMI Construction. Construction company

D.L.H. Home Solutions. Construction company. 810 Sparks Ave, Sauget, IL 62206

Central Development. Roofing contractor. 11 Madonna Ct, Belleville, IL 62223, United States

Phase 2 Contracting. Remodeler. 24 Woodlawn Cir, Belleville, IL 62226

Installation Services. General contractor. 2501 Green Mt Commons Dr, Belleville, IL 62221, United States

Compass Design Build LLC.. Custom home builder

Padgett Building & Remodeling. Contractor. 4200 Smelting Works Rd, Belleville, IL 62226, United States

Specializing in ADU construction and related services in Belleville, IL.

Specializing in ADU construction and related services in Belleville, IL.

Js and Sons Construction - Belleville. Roofing contractor. 205 S Illinois St, Belleville, IL 62220, United States

Hunter Construction. General contractor. 2625 S Illinois St, Belleville, IL 62220

Precision Contracting Unlimited LLC,. Contractor. 4106 N Belt W, Belleville, IL 62226, United States

Superior Contracting. Home builder. 226 Centreville Ave, Belleville, IL 62220, United States
Belleville is one of the top markets for accessory dwelling units in Illinois. With growing demand for affordable housing, ADU construction in Belleville offers homeowners an excellent opportunity to add living space, generate rental income, or house family members. Our curated list of backyard cottage builders in Belleville helps you find experienced professionals who understand local building codes, zoning regulations, and permit requirements.
ADU construction costs in Belleville typically range from $150,000 to $350,000 depending on size, design, and finishes. Garage conversions are generally less expensive ($80,000–$150,000), while custom-built detached ADUs can cost more. Get free quotes from our listed backyard cottage builders to compare prices.
Yes, ADU construction in Belleville requires building permits. Illinois has specific ADU regulations, and local zoning laws may have additional requirements. Our listed builders can help you navigate the permitting process.
ADU construction timelines in Belleville typically range from 4–12 months, depending on the project type. Prefab ADUs can be installed in 2–4 months, while custom builds may take 8–12 months including design and permitting.