Add Space Without Moving Out
Home Additions & Custom Builds in Burr Ridge for growing families running out of usable square footage
Mikasa Builders & Remodeling Corp manages home additions and custom builds for homeowners in Burr Ridge who need another bedroom, a home office that isn't squeezed into a corner, or a garage that actually fits two cars. You might be converting an unfinished space, building onto the back of the house, or adding a second story where the roofline and foundation allow. This service takes the project from design through framing, mechanicals, and finishes, so the new space matches the rest of the house.
The work includes room additions for bedrooms, offices, and sunrooms, garage additions and conversions, second-story expansions, custom home builds, foundation and framing work, and design-build project management. Foundations are poured to match the frost line depth, and floor joists are sized to carry live loads without bounce. Electrical service is upgraded if the added square footage pushes demand beyond what the existing panel can handle, and HVAC is extended or supplemented so the new rooms heat and cool like the old ones.
Call to talk through your lot layout, setback limits, and what kind of addition fits your needs and your property.

How Additions Are Built and Integrated
Your foundation is poured and cured before framing starts, and the sill plate is anchored with bolts spaced to code so the walls don't shift. If the addition connects to the existing house, the old siding is cut back and the new framing is tied into the existing structure with metal brackets and blocking. Roof lines are matched or transitioned so water drains correctly, and flashing is layered under shingles and around penetrations to keep the joint weathertight.
When the addition is finished, you'll see flooring that's level with the rest of the house, trim that matches the existing profiles, and walls that are insulated to current code. Mikasa Builders & Remodeling Corp leaves the mechanical connections accessible, the attic space vented, and the grading sloped away from the new foundation so water doesn't pool along the perimeter.
Second-story expansions require engineering to confirm the existing foundation and first-floor framing can carry the added load. Garage conversions involve sealing the slab, insulating the walls, and running ducts or baseboards for climate control. Custom builds on vacant lots include site prep, utility connections, and coordination with local inspectors at every milestone. Design-build management means changes are priced and drawn before the framing crew shows up, not after drywall is hung.
Questions About Adding Space to Your Home
Homeowners in Burr Ridge often wonder how additions affect property lines, what permits are required, and how long they'll be living in a construction zone.
What is the difference between a room addition and a second-story expansion?
A room addition builds out from the existing footprint and requires a new foundation, while a second-story expansion builds up and requires the existing structure to support the additional load.
How are setback requirements handled?
Setbacks are confirmed with the local zoning office before design begins, and the addition is positioned to stay within those limits or a variance is filed if one is needed.
When does the electrical panel need an upgrade?
Panels are upgraded when the addition includes a kitchen, laundry, or multiple high-draw circuits, or when the existing service is already near capacity.
Why does foundation work take several days before framing starts?
Footings are dug, poured, and cured, then the stem wall or slab is poured and given time to cure fully so the framing load doesn't cause cracking or settling.
What happens to the existing roof when an addition connects to the house?
The old roof is cut back where the addition ties in, and new framing is integrated with blocking and flashing so the joint is structurally sound and watertight.
If your home is out of space and moving isn't an option, Mikasa Builders & Remodeling Corp can walk the property, review the existing structure, and design an addition that fits your lot and your household.
