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Home Additions in Chicagoland

Room additions that match the house you already have, not a box bolted on the side.

Schedule a design consultation

When you need more space and you already like the block, an addition can be the right move. We match architecture, structure, and interior finishes so the new rooms belong to the house.

Family room expansions, suite additions, and similar work get planned as part of the existing building, not as a separate project taped on later.

Typical investment ranges

What an addition costs varies widely with size, foundation, and finish level. Many room additions for Chicagoland homes start in the low six figures; larger expansions run higher. We scope after we see structure and zoning.

  • Room addition (planning band)

    Often $100k–$250k+

    Foundation, structure, exterior match, and finished interior for a family room, suite, or expansion that belongs to the house.

These are typical ranges, not a quote. Your proposal comes after design. Explore remodeling financing if monthly payments help you move forward on the right scope.

Design-build process

Every additions project follows the same clarity path from consultation to warranty. See the full process.

  1. 1. Design consultation

    An expert designer from our team walks the home with you and talks through your goals, and how you want to live in the space.

  2. 2. Design & written proposal

    You get a clear scope, a written proposal with options, and a milestone payment schedule. Never a large upfront deposit. Changes only happen through a written change order you approve first.

  3. 3. Permits handled for you

    Chicago-area permits and inspections are on us. You never chase the village or the city.

  4. 4. Build with a dedicated project lead

    One person owns your project and keeps you updated on a set cadence. Daily cleanup, floors protected, no surprises.

  5. 5. Walkthrough & workmanship warranty

    We do a final walkthrough together and stand behind the work in writing after we leave.

What we put in writing

  • Written proposals with clear scope, not vague estimates
  • Milestone payments with no large upfront deposit
  • Permits and inspections handled for you
  • Written workmanship warranty

Where we work

We provide additions & expansions across Chicago, the North Shore, and the western suburbs, with broader coverage throughout Chicagoland. Start with these local pages:

Also serving Chicago, Naperville, Barrington, Hawthorn Woods, Kildeer, Deer Park, Lake Barrington, Glen Ellyn, and more. See all service areas.

Schedule a design consultation

Written proposals · Milestone payments · Financing available

Monthly payments? Explore remodeling financing for additions projects through Acorn Finance.

Schedule a consultation