Selling Your House to Buy New Construction in the Western Suburbs: Timing, Contingencies and Incentives
Builder communities in Plainfield, Oswego, Yorkville and even Lisle are drawing a lot of move-up and downsizing buyers. If you already own a home, buying new construction means coordinating two very different transactions: a resale on your side and a builder contract on the other. Here’s how to make them line up.
By Jake Kilts, HomeSmart Realty Group · Published October 2026
Register your agent at your first visit
Most builders require your agent to be with you, or registered, at your very first visit to the sales office. If you walk in alone, you may lose the option to have your own representation on the new home. The builder’s sales staff work for the builder. Having your own agent costs you nothing extra in most cases and gives you someone looking out for your timeline and your contract.
Two kinds of new homes, two very different timelines
| Quick move-in (spec) home | To-be-built home | |
|---|---|---|
| Ready in | Usually 30 to 90 days | Often 6 to 10 months or more |
| Choices | Finishes already picked | You choose lot, plan and options |
| Builder incentives | Often the largest, to move finished inventory | Usually smaller; can change with the market |
| Fits best with | Selling your current home now | Selling later in the build, closer to completion |
Will the builder accept a home-sale contingency?
Sometimes, but often with limits: a short window to get your home under contract, a bigger deposit, or a right for the builder to keep marketing the home. Many builders won’t accept one at all on quick move-in homes. That’s why your current home’s plan matters as much as the new one.
How I time the sale of your current home
- Before you sign with the builder: get a realistic price for your home so you know your budget and your down payment.
- For a to-be-built home: we prepare your home during construction and list it so your closing lands close to the builder’s completion date. A rent-back or a short gap rental covers any delay.
- For a quick move-in home: we list right away, often with a closing date matched to the builder’s.
- Build-schedule slips are normal. Leave room in your sale contract for possession to move a few weeks if needed.
Builder incentives: read the fine print
Builders often offer closing cost credits, rate buydowns or free upgrades, and many are tied to using the builder’s preferred lender or title company. Compare the full package, not just the headline. A lower price with no strings can beat a bigger incentive that comes with a higher rate or fees.
Resale competition from new construction
If you’re selling in a town with a lot of building, your buyers are also touring model homes. In Oswego, Plainfield and Yorkville, single-family homes took about 56, 53 and 50 days on average to sell over the last year, compared with about 24 in Wheaton. To compete, your home needs to be priced for its age and condition and show as move-in ready. See my pages for Oswego, Plainfield and Yorkville.
Inspect the new home too
New doesn’t mean perfect. An independent inspection before drywall and again before closing catches things the builder can fix while crews are still on site. Your agent should attend the builder’s final walk-through with you.
Frequently asked questions
Do I need a real estate agent to buy new construction?
You don’t have to, but the builder’s sales team represents the builder. Your own agent helps with the contract, incentives, inspections and, most importantly, selling your current home on the right timeline. Register your agent at your first visit.
Should I sell my house before building a new one?
For a to-be-built home, most people list their current home a couple of months before the expected completion date, with a rent-back or flexible possession in case the build runs late. For a quick move-in home, sell now and match the closings.
Thinking about selling?
Request a free Private Pricing Review and I’ll send you a realistic price range within 24 hours, so you know your budget before you visit a single model. You can also reach me here or call 630-487-1896.
Selling in your town
Lisle · Naperville · Aurora · Downers Grove · Wheaton · Plainfield · Bolingbrook · Oswego · Woodridge · Lombard · Geneva · St. Charles · Yorkville · Glen Ellyn
Jake Kilts, HomeSmart Realty Group · 630-487-1896
About this data
Source: MRED multiple listing service, Market Trends reports, October 2025 through September 2026, pulled October 2026. Averages are weighted by the number of sales each month. Market time is the MLS days-on-market measure for homes that closed. Information is deemed reliable but not guaranteed.
