How much do home additions cost in Wilmette?

Addition costs vary by size, structural scope, and finish level. We provide a detailed estimate and phased plan so you understand the full investment.

How long does a home addition take?

Timelines depend on design, permitting, and construction scope. Most additions take multiple phases, and we provide a project timeline before work begins.

Will a new addition match my current home?

Yes. We design and build additions to align with your existing rooflines, materials, and architectural style for a cohesive final result.

Do you handle permits and inspections for additions in Wilmette?

Absolutely. We coordinate permits, inspections, and code compliance from planning through final walkthrough.

How do you scope Home Additions projects in Wilmette?

We begin with an in-home consultation, define must-have vs. optional scope, and provide a phased plan when needed so Wilmette homeowners can move forward with confidence.

Can you coordinate design and build decisions for Wilmette projects?

Yes. We help align layout, material, and sequencing decisions early so your Home Additions project in Wilmette moves efficiently from planning to final walkthrough.

Do you serve areas near Wilmette for Home Additions?

Yes. We also support Home Additions projects in nearby communities such as Kenilworth, Evanston, Winnetka.

Top-Rated Addition Remodeling in Wilmette

Bright four-season sunroom addition with a wall of windows, tile floor and ceiling fan — representative of the home addition projects GS Construction builds in Wilmette, IL

Home Additions Experts

Expert Home Additions Services

GS Construction & Remodeling specializes in professional Home Additions. As a father-son team, we bring decades of combined experience to every project.

From initial design consultation to final walkthrough, we handle every aspect of your Home Additions project with care. Our hands-on approach means you'll always have Gregory or Patryk on-site, ensuring quality at every step.

Specialized Home Additions expertise
On-site supervision for every project
Transparent pricing with no surprises
Quality craftsmanship guaranteed

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"Your Home Additions project deserves the best—we deliver it."

Home additions in Wilmette, IL

East Wilmette is pre-war to its brick streets: the CAGE neighborhood — named for Chestnut, Ashland, Greenwood, and Elmwood — holds colonials, Tudors, Victorians, and foursquares built from the 1890s to the 1930s, a short walk from Gillson Park and the 1928 Spanish Court arcades of Plaza del Lago. Farther west, the stock turns mid-century near Edens Plaza. GS Construction remodels both eras: kitchens that open compartmented pre-war plans, baths and basements that retire galvanized supply lines and tired drain tile, and additions and whole-home projects scaled to Wilmette lots. One Wilmette-specific note: the Village's 2024 policy replaces its roughly 2,200 remaining lead service lines at no cost through the village-wide program — but a replacement triggered by an addition or service upgrade is the owner's expense, so we time that piece deliberately. Most of the village feeds District 39 and then New Trier, with the Metra UP-N and the Purple Line's Linden terminal handling the commute.

Neighborhoods & landmarks near our Wilmette home additions

Baha'i House of Worship, Gillson Park, Plaza del Lago, Wilmette Historical Museum, Edens Plaza, Linden Purple Line terminal, Wilmette Metra station (UP-N), New Trier High School, Centennial Ice Arena

Wilmette permits & building codes for home additions

Wilmette permits go through Community Development at 1200 Wilmette Avenue — paper submittals are preferred (electronic filings take longer to issue) — with a published goal of 10 business days per reviewer for first review. Plans need an Illinois architect's or structural engineer's stamp for structural work or projects over $25,000, reviewers can require one even below that for kitchens, baths, and basement remodels, and every contractor on the permit must hold a Wilmette contractor license before issuance. Exterior work on a designated Wilmette landmark needs a no-fee Certificate of Appropriateness from the Historic Preservation Commission first, and the village also maintains an Appearance Review Commission for design review. GS Construction manages the full permit process — applications, stamped drawings, contractor licensing, and phone-scheduled inspections — on every Wilmette project.

Home Additions Coverage Around Wilmette

We provide home additions in Wilmette and nearby communities to keep schedules, crews, and permitting coordination efficient.

Local ZIP coverage

60091

Home Additions in Kenilworth Home Additions in Evanston Home Additions in Winnetka Home Additions in Northfield Home Additions in Skokie Home Additions in Morton Grove

Planning Home Additions in Wilmette

Most Wilmette projects start with scope alignment: what to renovate now, what to phase later, and which finishes deliver the highest daily impact. We build plans around your home layout, timeline, and budget priorities.

Execution and permitting in Wilmette

We handle sequencing, trade coordination, and code-compliance requirements for Home Additions projects in Wilmette. Permit context: Wilmette permits go through Community Development at 1200 Wilmette Avenue — paper submittals are preferred (electronic f....

Nearby service coverage from Wilmette

In addition to Wilmette, we regularly complete Home Additions projects in nearby communities including Kenilworth, Evanston, Winnetka. This helps keep crews, vendors, and scheduling logistics efficient across the area.

Modern Grand Room Remodel

Before

After

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What Wilmette homeowners say

“We cannot say enough good things about GS Construction and about Greg and Patryk. We hired them on a strong recommendation from a friend and are very pleased with the results. Our project included remodeling a kitchen and master bathroom an...”

Madelyn & John K — Wilmette, IL

Budgeting first? See real 2026 price ranges in our home additions cost guide — and what your Wilmette permit will add in our permit guide.

Testimonials

Your Neighbours in Wilmette Love Us

Real reviews from homeowners. Ask us for live phone references.

5 Stars — Maribeth S

Arlington Heights, IL · Jan 2026

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Completed projects around Wilmette

GS Construction crews have completed 91 projects within 10 miles of Wilmette — part of 399 completed projects across 67 Chicago-area ZIP codes. The map below shows real project density from our records, not a service-area claim.

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More Remodeling Services in Wilmette

Wilmette Kitchen Remodeling Wilmette Bathroom Remodeling Wilmette Home Remodeling Wilmette Basement Remodeling

Home Additions in Nearby Areas

We also serve these communities near Wilmette, IL. Click for home additions info specific to each city.

Kenilworth Home Additions 0.9 mi Evanston Home Additions 2.4 mi Winnetka Home Additions 2.6 mi Northfield Home Additions 3.9 mi Skokie Home Additions 4.0 mi Morton Grove Home Additions 4.4 mi Glencoe Home Additions 4.7 mi Lincolnwood Home Additions 5.0 mi

Let's Build Beautiful Spaces Together

GS Construction is a father-and-son construction company specializing in residential remodeling and renovations in Wilmette. Expect clear communication, quality craftsmanship, and a straightforward plan—reach out today to schedule a free in-home consultation and get a detailed estimate and honest feedback.

Telephone: (224) 735-4200
Email: [email protected]
Service Area: Service Area
Wilmette and surrounding Chicagoland areas

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Saturday morning appointments are limited. If you need a Saturday meeting, please mention it in your message. We typically schedule Saturday appointments about 4 weeks in advance.

How much do home additions cost in Wilmette?: Addition costs vary by size, structural scope, and finish level. We provide a detailed estimate and phased plan so you understand the full investment.
How long does a home addition take?: Timelines depend on design, permitting, and construction scope. Most additions take multiple phases, and we provide a project timeline before work begins.
Will a new addition match my current home?: Yes. We design and build additions to align with your existing rooflines, materials, and architectural style for a cohesive final result.
Do you handle permits and inspections for additions in Wilmette?: Absolutely. We coordinate permits, inspections, and code compliance from planning through final walkthrough.
How do you scope Home Additions projects in Wilmette?: We begin with an in-home consultation, define must-have vs. optional scope, and provide a phased plan when needed so Wilmette homeowners can move forward with confidence.
Can you coordinate design and build decisions for Wilmette projects?: Yes. We help align layout, material, and sequencing decisions early so your Home Additions project in Wilmette moves efficiently from planning to final walkthrough.
Do you serve areas near Wilmette for Home Additions?: Yes. We also support Home Additions projects in nearby communities such as Kenilworth, Evanston, Winnetka.

Explore Wilmette:

Wilmette Home Additions