New Construction Homes in Lake County, IL

It is not evenly spread. Mundelein has active builder activity including Grand Dominion, and Hawthorn Woods has newer development at Kemper Ridge. Established towns like Lake Forest and Highland Park see mostly teardown-and-rebuild rather than new communities.

That distribution matters, because a buyer set on new construction in a specific town may be choosing between that town and new construction, not both.

This is the one worth repeating. A new-construction tax bill frequently reflects the unimproved lot only. Once the completed home is assessed, the bill rises, and Lake County effective rates run from roughly 1.87% in Lake Forest to 2.95% on the Lake side of Buffalo Grove. On a $600,000 home that difference is thousands a year. Budget from the assessed-home figure, not the current one.

In the built-out parts of Lake County, most new construction is not a subdivision. It is a teardown and rebuild on an existing lot in an established neighborhood.

That is a different purchase. You are buying a new house inside an old street grid, usually with mature trees, existing infrastructure and walkability that a new subdivision does not have, and usually at a higher price per square foot.

The things to check are different too. What the village permits on that lot in terms of height, footprint and setback. Whether the existing utilities are adequate or need upgrading at your cost. Whether the lot has drainage history, because a new house on a lot that has always been wet is still on a wet lot. And what the neighbors were told, because a teardown in an established street sometimes arrives with a planning history worth reading.

What is standing inventory right now, and how long has it been standing. That is where the negotiation is.

What is the projected tax bill on the completed assessment, in writing. Lake County effective rates vary by more than a percentage point between towns, and a land-only figure is not your bill.

What is still to be built in this community, where, and on what timetable. You are buying the finished community, not the one in the brochure.

Who administers the warranty after the sales office closes, and how claims are handled then.

And what the registration rule is for a buyer's agent, which you need to know before your first visit rather than after it.

This deserves its own section because it is the most common budgeting error on a new build in this county.

Lake County assesses at one third of market value, and the combined rate is the sum of every district serving the parcel. Effective rates across the county's towns span more than a percentage point, from roughly 1.87 percent at the mild end to close to three percent at the other. On a $700,000 house that spread is more than $7,000 a year, every year.

On a new build the figure you are shown early is often the assessment on the land alone, because the house does not exist yet. Once it is completed and assessed, the bill rises to reflect the finished property.

So: ask the builder in writing for the projected tax on the completed assessment, then check the effective rate for that specific town yourself rather than accepting a county average. Budget from the completed figure, and expect the first full bill in the year after you close rather than the year you move in.

Builders do not price evenly through a phase, and knowing where they are in one is most of the negotiating advantage a buyer has.

Early in a release, with a waiting list, there is very little movement. The builder is establishing the price that every subsequent home in the community will be measured against.

Late in a phase, with a handful of homes left and a finished spec standing, the position reverses. A completed house with no buyer costs the builder money every month and blocks the capital for the next phase.

Quarter ends and year ends sharpen the same effect.

So ask two questions at every sales office: what is standing inventory, and how long has it been standing.

Register your agent on your first visit. Most builders honor buyer representation but many require the agent present at first registration, and once you have signed in alone the opportunity can be gone. The sales agent in that office works for the builder.