Addition Concrete & Masonry · Downers Grove, IL
Addition Concrete & Masonry in Downers Grove
Planning a home, garage, or commercial addition in Downers Grove? CLMC handles the concrete foundations, footings, slabs, grading, brick/block work, and masonry tie-ins that give additions a solid base.
Veteran-owned · Concrete · Foundations · Masonry · Downers Grove
Our Scope
The Foundation Has to Be Right First.
CLMC focuses on the concrete, foundation, grading, and masonry portions of addition projects. We can work alongside your general contractor, architect, or builder to complete the structural exterior scope properly.
We don't handle framing, roofing, plumbing, electrical, HVAC, or interior finishing. Our scope is the base — the footings, walls, slabs, drainage, brick/block, and masonry that determines whether an addition holds up or fails.
Local Expertise
Additions in Downers Grove
Downers Grove's mix of older and newer homes creates demand for residential additions, garage additions, and foundation work that bridges existing and new construction. Many older homes in Downers Grove have foundation systems and drainage patterns that need to be addressed when adding on.
Foundation and slab work on Downers Grove additions means getting the footings right, managing soil conditions, and ensuring the new foundation doesn't create drainage problems for the existing structure.
Waterproofing around new foundation areas is critical on Downers Grove lots where older homes may not have modern below-grade water management. We handle waterproofing and drainage coordination as part of the foundation package, and masonry tie-ins to connect the new exterior to the existing home.
Scope of Work
What We Handle
The Risk
Why Addition Foundations Fail
Poor Grading
Grade that slopes toward the foundation instead of away from it channels water directly into the new addition's base.
Bad Drainage
Missing or undersized drainage systems allow hydrostatic pressure to build against new foundation walls.
Undersized Footings
Footings not engineered for the addition's load cause settlement and cracking that worsens every season.
Poor Soil Prep
Uncompacted or improperly prepared soil under footings and slabs leads to differential settlement between old and new construction.
Bad Waterproofing
Waterproofing applied incorrectly or skipped below grade allows water to saturate foundation walls and enter the structure.
Weak Masonry Tie-Ins
New masonry not properly connected to the existing structure creates a seam that separates and cracks over time.
Concrete Cracking
Concrete poured too wet, poorly consolidated, or finished incorrectly develops cracks under load and thermal stress.
Foundation Movement
Footings poured above frost depth heave during freeze-thaw cycles, cracking walls and slabs within the first winter.
Mismatched Masonry
Brick that doesn't match the existing home creates a visible color or texture break that reduces property value.
How We Work
Our Process
01
Review Plans and Site Conditions
We review your architectural plans, assess soil conditions, access points, and the existing structure to understand the full foundation and masonry scope before pricing.
02
Confirm Scope, Access, and Sequencing
We confirm site access, existing grades, excavation depths, and sequencing with your GC, architect, or builder so foundation work fits the project schedule.
03
Grading and Site Prep
Site is graded and prepared for proper drainage away from the new foundation. Soil is compacted and prepped before any concrete is ordered.
04
Footings and Foundation Work
Footings are excavated below frost depth, reinforced, and poured to spec. Foundation walls are formed and poured with correct reinforcement.
05
Slab and Foundation Wall Construction
Slabs and foundation walls are formed to spec with correct reinforcement, control joints, and elevation. Forms are checked for plumb, level, and alignment.
06
Brick, Block, and Masonry Tie-Ins
Brick and block work is installed with matching materials. Masonry tie-ins to the existing structure are executed so the addition reads as part of the original home.
07
Waterproofing and Drainage Coordination
Foundation waterproofing, drainage board, and below-grade water management are installed before backfill. Every penetration and transition is sealed.
08
Cleanup and Final Review
Site is cleaned. Form ties are stripped. We walk the project with you to confirm every scope item is done right before the build moves forward.
Project Examples
Foundation & Masonry Work for Additions
Concrete foundation for residential addition
Foundation walls tied into existing home
Foundation walls and slab prep
Excavation and concrete foundation work
Residential addition foundation package
Questions
FAQ: Additions in Downers Grove
Do you build full additions in Downers Grove?
No. CLMC handles the concrete, foundation, grading, and masonry portions of addition projects in Downers Grove. We do not handle framing, roofing, plumbing, electrical, HVAC, or interior finishing. We work alongside your general contractor, architect, or builder to complete the structural base.
Can you pour concrete foundations for additions in Downers Grove?
Yes. We pour footings, foundation walls, and slabs for home and garage additions in Downers Grove. Every footing is excavated below frost depth and engineered for the load of the addition and local soil conditions.
Do you work with general contractors or architects in Downers Grove?
Yes. We routinely coordinate with general contractors, architects, and builders on addition projects in Downers Grove. We review plans, confirm scope and sequencing, and handle the concrete, foundation, grading, and masonry work within our expertise.
Can you help with grading and drainage around a new addition?
Yes. Proper grading and drainage around new foundation work is part of the scope. If water pools toward the foundation or drainage is undersized, problems start immediately. We handle grading, drainage paths, and waterproofing coordination as part of the foundation package.
Can you handle garage addition foundations in Downers Grove?
Yes. We handle garage slabs, footings, and foundation walls for attached and detached garage additions in Downers Grove. We also handle driveway and flatwork tie-ins where needed.
Can you match brick or masonry on an existing home?
Yes. Brick matching and masonry tie-ins are part of our scope. We source matching brick and manage transitions at corners, rooflines, and openings so the addition reads as part of the original structure — not a visible add-on.
What addition scopes does CLMC handle?
CLMC handles concrete foundations, footings, foundation walls, slabs, grading and site prep, drainage and waterproofing coordination, brick and block masonry, masonry tie-ins to existing structures, and exterior flatwork around additions. We do not handle framing, roofing, plumbing, electrical, HVAC, interior finishing, or design-build services.
Do you work on commercial additions in Downers Grove?
Yes, where the scope fits our expertise. We handle foundation and slab packages for commercial additions in Downers Grove, including footings, walls, and concrete placement engineered for commercial loads. We do not provide full commercial general contractor services.
Where We Work
Areas We Serve
We serve Downers Grove and nearby communities including Darien, Westmont, Lisle, and Woodridge. Our crews work across DuPage County.