Additions
Home additions in Northbrook and on Chicago’s North Shore.
People on the Shore often do not want a new neighborhood. They want one more room, a primary suite, a second story, or a kitchen that finally works — on the lot they already own. The office is in Northbrook.
Work we do
Interior additions, and the joint that has to match.
The rooms a North Shore house usually needs next. Shown as types of work, not a finished job.
Interior
Primary suite addition
Bedroom, bath, and a closet that can close.
Interior
Family room / rear addition
A room the lot already had room for.
Interior
Kitchen expansion
Structure and light — not new cabinets in the same envelope.
Exterior
Matching-roofline addition
The joint has to read as if it had always been there.
Addition
Garage and living
Attached garage, or a suite where the village allows it.
$200,000–$350,000+
Family rooms and bump-outs
A room the lot already had room for. Rear additions, bump-outs, and the glass that makes the original house work again.
$250,000–$450,000+
Primary suite additions
Bedroom, bath, and closet — usually at the back or over a garage.
$200–$400 / sf
Kitchen expansions
Not new cabinets in the same envelope. Structure, light, and square footage.
$350,000–$600,000+
Second-story additions
Only with a named architect and structural engineer. Not a carpentry extra.
$200,000–$450,000+
Garage and living
Attached garage, office over the garage, or a suite where the village allows it.
| Project | Planning range | Notes |
|---|---|---|
| Room addition / bump-out | $200–$400 / sf | Foundation, kitchen tie-in, finishes |
| Primary suite addition | $250,000–$450,000+ | Bath and closet drive cost |
| Family room / rear addition | $200,000–$350,000+ | Windows, spanning openings, drainage |
| Second-story addition | $350,000–$600,000+ | Structure, stairs, village review |
| Whole-house + addition | $400,000–$900,000+ | Systems, finishes, and the new wing |
Design and permitting often take longer than framing. A second story promised for “this spring,” without drawings, is not a schedule we will sign. Ranges are indicative; a written proposal follows the site visit.
Built in Northbrook, and the villages around it
Oak & Shore is a Northbrook general contractor. We pull Village of Northbrook permits as contractor of record. Most families remain in the house.
Begin with a site visit
Share the village, the type of work, and an indicative budget. We review the house before we discuss numbers.