SDI Inc. is a licensed, bonded and insured general contractor serving Lake Villa and Lake County, Illinois — residential and commercial, for 24 years.
From a single repair to a full remodel — our own crews handle the whole job. We don't subcontract.
Full kitchen renovations — cabinetry, countertops, islands, tile, lighting and appliance installation. See kitchen remodeling →
Custom tile, glass showers, vanities and full bathroom rebuilds finished to a high standard. See bathroom remodeling →
Turning unfinished space into living space — framing, flooring, lighting, egress and trim. See basement finishing →
Roof repairs, vents, flashing and weatherproofing, handled by our own experienced crews. See roofing & repairs →
Siding, soffit, fascia, columns and exterior carpentry that stands up to Illinois weather.
Custom cabinetry, fireplace surrounds, shelving and finish carpentry made to fit your space.
Cedar and treated decks, elevated decks, pergolas, railings, stairs and hot tub platforms. See the deck gallery →
Hardwood, engineered plank and tile — supplied, installed and finished.
Recessed lighting, fixtures and lighting design that changes how a room feels.
Water damage, rot, storm and fire damage put right — we open it up, find the real extent and rebuild it properly. See storm & water damage restoration →
Joists, beams, load-bearing walls, additions and second-storey builds — framed to code by our own carpenters.
Shower pans, waterproof membranes and large-format tile, installed so they stay dry for the long run.
Patching, taping, texture matching and interior or exterior painting to finish the job cleanly.
Build-outs, showroom and retail tile, repairs and maintenance for commercial properties across Lake County — including tile work for Tesla in Highland Park.
A sample of recent projects, completed by our own crews across Lake County.
Curved Composite Deck with LED Lighting
Cascading Deck Stairs & Riser Lights
Curved Deck with Built-In Bench
Lakefront Composite Deck
Composite Deck & Evening Lighting
Composite Deck with Wraparound Steps
Cedar Pavilion & Outdoor Kitchen
Cedar Deck, Hot Tub & Gazebo
Composite Deck with Planter Boxes
Two-Storey Cedar Porches
Curved Deck with Ornamental Railings
Custom Kitchen, Quartz & Patterned Tile
White Kitchen & Centre Island
Kitchen with Stacked Stone Island
Marble Bathroom & Freestanding Tub
Marble Shower with Skylight
Black Marble Feature Bathroom
Stone Fireplace & Built-Ins
Staircase & Wrought Iron Balusters
Reclaimed Barn Wood Feature Wall
Hardwood Floor Refinishing
Siding & Exterior Renovation
Stone Veneer & Entry Door
Commercial Tile — Tesla Highland Park
Showroom Entrance, Finished
Deck Rebuild — Before
Deck Rebuild — AfterA lot of our work starts as a small stain on a ceiling or a soft board underfoot. We open it up, show you exactly what is behind it, and repair back to sound structure — not just cover it over. Water and storm damage, rot, insect damage and structural repairs, with insurance paperwork handled when it applies.
Hidden Rot Uncovered
Rot & Insect Damage Assessment
Stripped Back to Sound Framing
Water-Damaged Framing Repaired
Safe Removal of Damaged Material
Waterproofing & Large-Format Tile
Second-Storey Addition
Rebuilt Front Entry & StepsIn the time it takes others to call you back, we can often estimate, start and finish — saving you time and money.
Our team is 100% full-time employees. The people who quote your job are the people who do it.
Fully covered on every job, and we follow building codes to the letter.
Big job or small, we see it through to completion — on time, and cleaned up after.
Tell us about your project and we'll get right back to you.