ADU Construction in Sycamore
An ADU — accessory dwelling unit — is a fully independent living space on your property, with its own kitchen, bathroom, and entrance. C & H Construction and Remodeling designs and builds detached and attached ADUs in Sycamore, from compact studios to two-bedroom units. We handle site planning, design, permitting, and construction so what you end up with is a real home, not a glorified shed
Why Build an ADU
ADUs solve two problems at once. They give families a way to support aging parents, house adult children, or accommodate long-term guests without giving up privacy in the main home. And depending on local rules, they can generate rental income that offsets the build cost over time. They also add real value to the property, because the structure is permitted, finished, and separately useable. For multigenerational households especially, a well-designed ADU is the difference between everyone living on top of each other and everyone having space to actually live.
Our ADU Construction Process
1
Feasibility & Site Review
Before any design starts, we look at lot size, setbacks, utility access, and local zoning. ADU rules vary significantly by city, and the feasibility step decides what's actually buildable on your property.
2
Design & Engineering
Floor plan, elevations, structural engineering, utility routing, and exterior design that complements the main house.
3
Permitting
ADUs typically involve building permits, utility approvals, and zoning sign-offs. We manage all of it through to approval.
4
Construction
Site prep, foundation, framing, roofing, exterior, mechanicals, insulation, drywall, finishes, and full interior fit-out — kitchen, bathroom, flooring, fixtures.
5
Final Walkthrough & Certificate
Final inspections, certificate of occupancy where applicable, and a walkthrough confirming every system is operational.
What Affects the Cost of an ADU
Three scope tiers cover most ADU projects:
Refresh-Level ADU: A garage-to-ADU conversion using the existing structure, with new utilities, full bathroom, kitchen, and finished living space.
Mid-Range ADU: A new-build detached studio or one-bedroom on the property, with standard finishes and straightforward utility runs.
Full Custom ADU: A larger two-bedroom detached unit or a fully integrated attached ADU with premium finishes, custom design, and complex site work.
Utility distance from the main service, site grading, and local impact fees often affect cost more than the unit itself.
ADU FAQs
Can I rent out the ADU?
That depends on local rules, which vary significantly by city. Some areas allow long-term rentals, some allow short-term, and some restrict ADUs to family use only. We'll talk through your local rules during the feasibility step.<
Attached or detached — which is better?
Detached gives more privacy for both households and is usually preferred for rental or aging-parent scenarios. Attached is often cheaper to build because it shares walls and utilities with the main home. The right answer depends on your lot, your goals, and what your zoning allows.
How long does an ADU take from start to finish?
Plan on 9 to 18 months from design start to move-in, including permitting. Active construction is typically 5 to 9 months depending on size and complexity.
Thinking About an ADU?
Schedule a free consultation. We'll look at your lot, talk through what you'd use the ADU for, and tell you honestly what's feasible and what it would take.
Remodeling Services in Sycamore. Insured, and backed by 5 years of work we stand behind.
Contact
© 2026 C & H Construction and Remodeling. All rights reserved.