Attic Conversions and ADU Services by Assembly Squad Remodeling LLC
Assembly Squad Remodeling LLC is a Chicago-based remodeling company specializing in attic conversions across a wide range of project types. From basic finishing work to full accessory dwelling unit builds, they handle projects of varying scope and complexity throughout the Chicago area.
Their attic conversion services cover several use cases, including:
- Primary Bedroom Suites — featuring full bathrooms, walk-in closets, vaulted ceilings, and skylights
- ADU Rental Units — legal units built under Chicago's ADU ordinance, capable of generating $1,500–$2,500 per month in rental income
- Playrooms and Bonus Rooms — with built-in storage, durable flooring, and dedicated climate control
- Home Offices — quiet, dedicated workspaces with proper lighting and HVAC
- Guest and In-Law Suites — private accommodations with separate living space and bathroom
- Entertainment Spaces — including home theaters, game rooms, music studios, and fitness areas with soundproofing options
Assembly Squad Remodeling LLC works across a variety of Chicago building types, including classic bungalows, 2-flats, 3-flats, and greystone buildings. They also serve single-family homes from Lincoln Park to the North Shore. Their approach to vintage and historic properties is described as sensitive to the existing architecture.
Pricing and Project Timelines
Based on their completed projects, Assembly Squad Remodeling LLC provides the following general pricing ranges for Chicago attic conversions:
- Basic Finish (flooring, drywall, lighting, electrical, HVAC): $50–$80 per sq ft — typically 6–8 weeks
- Bedroom Suite (full bathroom, walk-in closet, stairs, HVAC): $100–$150 per sq ft — typically 10–14 weeks
- Full ADU Conversion (kitchen, bathroom, separate entrance, permits): $150–$200+ per sq ft — typically 12–16 weeks
A typical 400 sq ft Chicago bungalow attic conversion ranges from approximately $40,000 to $80,000. Detailed line-item estimates are provided after an initial assessment. The total project timeline, including design, permitting, and construction, generally runs 4–6 months. City of Chicago permit review alone can take 4–8 weeks due to Department of Buildings backlogs.
If ceiling height is insufficient, Assembly Squad Remodeling LLC adds dormers to increase usable headroom. Shed dormers run $15,000–$30,000 and add headroom across a wide area, while gable dormers cost $15,000–$25,000 each. For properties in historic districts such as Pullman or Old Town Triangle, they coordinate with the Chicago Landmarks Commission.
Permits, ADU Compliance, and Insulation
The City of Chicago Department of Buildings requires permits for any attic conversion involving structural changes, electrical, plumbing, or HVAC work. Required documentation includes architectural plans stamped by an Illinois-licensed architect, structural engineering calculations, and phase inspections. Permit fees typically run $500–$2,000. Unpermitted work can result in fines of $1,000 or more per day. Assembly Squad Remodeling LLC manages all permit applications and inspections as part of every project.
For ADU conversions, Chicago's ADU Ordinance — originally passed in December 2020 and expanded in September 2025 — sets specific requirements: the building must be 20 or more years old, located in an eligible zoning district, and the unit must include a separate entrance, full kitchen, bathroom, and dedicated HVAC. No additional parking is required. Assembly Squad Remodeling LLC has completed 50+ ADU conversions across neighborhoods including Logan Square, Pilsen, and Avondale.
For insulation, they install closed-cell spray foam at a minimum of R-38 per Chicago Energy Code, applied at the roofline. For climate control, they recommend dedicated mini-split systems from brands such as Mitsubishi and Daikin, with installed costs ranging from $4,500 to $7,500.
Most clients remain in their homes during construction. Attic work takes place above the living space, with dust barriers installed. Per Chicago noise ordinance, construction is limited to 8am–5pm on weekdays. Utility shutoffs are brief, typically 30–60 minutes, and staircase installation may cause 1–2 days of disruption.
Assembly Squad Remodeling LLC serves neighborhoods across Chicago including Lincoln Park, Lakeview, Logan Square, Wicker Park, Bucktown, North Center, Ravenswood, Old Town, Gold Coast, and Ukrainian Village, among others.
