Chicago Granny Flats

Chicago Granny Flats is a Chicago-area design-build company specializing in accessory dwelling units (ADUs), coach houses, backyard cottages, and granny flats. The company focuses on providing homeowners and property investors with stylish, energy-efficient, and cost-effective secondary living spaces through a streamlined turnkey process. By combining in-house design services, permitting assistance, and construction expertise, Chicago Granny Flats helps clients transform underutilized backyard space into functional housing solutions that can serve as guest accommodations, rental properties, home offices, or multigenerational living spaces.

Based in Glenview, Illinois, the company offers a complete design-build experience, managing projects from initial site analysis and architectural planning through permitting, construction, and final delivery. Their approach is centered on simplifying what can often be a complicated building process while providing predictable pricing and efficient project execution.

ADU & Coach House Services

Services Include:

• Accessory Dwelling Units (ADUs)
• Coach houses
• Backyard cottages
• Granny flats
• Detached secondary housing units
• Guest houses
• In-law suites
• Rental property ADUs
• Home office spaces
• Architectural design services
• Site feasibility analysis
• Customized floor plans
• Permit coordination
• Turnkey construction services
• Utility connection coordination
• Project management

Chicago Granny Flats provides a fully integrated process that includes design, engineering, permitting, and construction management, allowing homeowners to work with a single company throughout the project lifecycle.

Signature Granny Flat Models

Available Models:

• The Nanna – Designed for standard Chicago lots, featuring a two-car garage and vaulted ceilings.
• The Abuela – Ideal for larger or deeper lots with two- or three-car garage configurations and one- or two-bedroom layouts.
• The Big Granny – Designed for oversized urban and suburban lots, featuring a four-car garage and up to 1,000 square feet of living space.

Each model can be customized to fit the homeowner’s property, design preferences, and functional requirements while blending with the surrounding neighborhood architecture.

Innovative Design & Construction Approach

Chicago Granny Flats utilizes a proprietary panelized building system that incorporates structurally insulated light-gauge steel wall panels. These materials are designed to provide durability, energy efficiency, fire resistance, and environmental sustainability while reducing construction timelines and minimizing on-site waste. The company’s off-site manufacturing and assembly process allows many projects to be completed faster than traditional construction methods.

Features Include:

• Energy-efficient construction
• Structurally insulated wall systems
• Recycled and recyclable materials
• Custom architectural designs
• Fiber cement exterior cladding options
• Flexible floor plan configurations
• Reduced construction waste
• Accelerated installation timelines

Why Homeowners Choose Chicago Granny Flats

• 100% turnkey design-build services
• Licensed general contractor
• Fixed upfront pricing structure
• In-house architectural team
• Customized floor plans and elevations
• Energy-efficient building systems
• Streamlined permitting process
• Financing assistance options
• Rental income and investment property solutions
• Experienced ADU specialists

The company’s process is designed to reduce complexity and provide homeowners with a clear path from concept to occupancy while maximizing the value and usability of their property.

Helping Create Flexible Housing Solutions

Chicago Granny Flats helps homeowners address a variety of housing needs, including multigenerational living, guest accommodations, rental income generation, home offices, gyms, and creative studio spaces. As interest in ADUs and coach houses continues to grow throughout Chicago, the company remains focused on providing practical, sustainable, and high-quality housing alternatives that enhance both lifestyle and property value.