Yes, and the Wilmette sample measures the difference precisely. Older homes in 60091 averaged 27.5 percent of the price of new construction on a comparable lot, which means a finished new home commanded a little more than three and a half times the older home figure in the relationship captured here (Frontier Capitals, 2026). New construction on comparable lots has sold for 1,800,000 to 2,900,000 dollars, varying with street, lot width and closeness to the lake and the village centre (Redfin, 2026). The worked example in the research puts the two sides side by side: where a new build on a comparable lot sells for 2,300,000 dollars, the older home nearby sold for roughly 633,000 dollars at the 27.5 percent ratio. Builders acquired all 12 sampled older homes, a 100.0 percent rate on a small sample of 12, because acquiring at the older level and delivering at the finished level is the central transaction in this village (Frontier Capitals, 2026).
Key Findings
- Older Wilmette homes averaged 27.5 percent of new build prices on comparable lots in the sample compiled for this report (Frontier Capitals, 2026).
- New construction on comparable lots sold for 1,800,000 to 2,900,000 dollars, with street, lot width and lake and village centre proximity shaping the outcome (Redfin, 2026).
- At the sample ratio, an older home comparable to a 2,300,000 dollar new build sold for roughly 633,000 dollars (Frontier Capitals, 2026).
- Builders acquired 12 of 12 sampled pre-1981 homes, a 100.0 percent rate that is reported with its small sample size attached (Frontier Capitals, 2026).
- The simplified residual illustration assigns roughly 950,000 dollars of a 2,300,000 dollar finished price to hard and soft construction costs, before margin and land.
Where does the money in a new Wilmette home actually go?
Begin with construction, because it is the largest single reason the two prices differ. A finished Wilmette home is a new structure with new systems, built under current village foundation and permit requirements, on one of the most expensive residential stages on the North Shore (Village of Wilmette, 2026). The research illustration prices that work at roughly 950,000 dollars in hard and soft costs against a 2,300,000 dollar sale. An older home contains no such sum. Its structure was paid for at the prices of its own era, and the market values what remains of it accordingly.
Land is the second component, and it is common to both prices. County parcel and assessment records show land value being carried explicitly for Wilmette properties, through dimensions, zoning and assessed land value for each lot (Cook County Assessor, 2026). When a new home sells for 2,300,000 dollars, a large share of that figure is the lot in a village with effectively no vacant residential land, a lake on one side and settled suburbs on the others. When the older home on a similar lot sells near 633,000 dollars, the buyer is largely paying for that same ground, with a modest addition for whatever residential use the existing house still offers.
Margin and risk form the third component. The illustration allows a builder margin near 20 percent, compensating capital committed across a long build, cost movement during the work and the chance that the finished market softens before completion. House price index evidence reminds a reader that even resilient areas move through cycles, so that margin is not decoration (Federal Housing Finance Agency, 2026). Site preparation of 30,000 to 45,000 dollars sits in the illustration as a further real cost before a foundation can be poured. Add land near 890,000 to 980,000 dollars of residual value, construction near 950,000 dollars and the margin, and the 2,300,000 dollar finished figure stops looking mysterious. It is an account rendered as a house.
That accounting also explains why the older home is not simply cheap. At 27.5 percent, the older property is priced mainly as land with a standing structure of limited remaining value to the likely buyer. Census context for Cook County, a mature high ownership county, underlines that the demand paying the finished price is a long stay household demand, not a passing speculation (U.S. Census Bureau, 2025). The household pays for completion in the New Trier district. The builder pays for the opportunity to supply that completion. The older home sits between them, valued by the second buyer as the input to what the first buyer wants.
Why does renovation not pull an older home up to the new price?
Because renovation renovates an old structure, while the new price pays for a new one. The research illustration is specific on this point: a 150,000 dollar renovation on a 1955 colonial might lift the sale price by 100,000 to 125,000 dollars if the buyer intends to live in the home, and it returns 0 dollars if the buyer clears the lot. Even the favourable case recovers less than the outlay, and it leaves the buyer with the original frame, the original ceiling heights and a layout conceived for another pattern of family life.
National buyer material points in the same direction, with households at high price points preferring finished space they can occupy without a building programme (National Association of Realtors, 2025). A family able to pay close to 2,300,000 dollars has the option of the genuine new article, a few streets away, with warranties and current systems. Asking that family to pay a similar sum for a heavily renovated older home requires the renovation to be indistinguishable from new construction in every system that matters, a standard few projects meet and none meets cheaply.
Automated valuation can blur this distinction for an owner, sometimes for months. Estimates built from nearby closings absorb the new construction sales on the street, because valuation models for 60091 draw on recently sold homes that include the finished product (Zillow, 2026). The owner sees a number drifting toward the new builds and may conclude the renovated older home belongs in that company. Recorded deeds provide the correction. County transaction records separate what older homes actually achieved from what finished homes achieved, property by property, and the 27.5 percent relationship reappears in that cleaner record (Cook County Recorder of Deeds, 2026). Sellers who want to trace that separation on their own street can use the analysis of how new construction sale prices affect older Wilmette home values, which follows the spillover and its limits.
Are there older homes that beat the 27.5 percent average?
An average describes a sample, not a ceiling for an address. Three situations can lift an older home well above the ratio. The first is an outstanding lot, wider than the study minimum of 6,600 square feet and placed where finished values reach the top of the 1,800,000 to 2,900,000 dollar range, because on such a lot even the land component alone can rival the full price of lesser homes elsewhere in the village (Cook County Assessor, 2026; Redfin, 2026).
The second situation is an older home that is, in substance, already a finished luxury product: large, comprehensively renewed in its systems and arranged for current living. Such a home competes for the household buyer rather than for the builder, and its price is set in the household market, where a family pays for the district, the lake access and a house it can occupy on the day of closing. The sample average includes homes in every condition, so a genuinely finished older estate should expect to sit above it, sometimes by a wide margin.
The third situation is dual competition, where a home is both liveable and buildable and the two buyer types arrive in the same negotiation. A household valuing the rooms and a builder valuing the ground can push each other past the level either would have offered alone. That outcome cannot be scheduled by a seller, yet it can be recognised by watching which names and entities have been taking deeds nearby and at what levels finished homes on the street have closed (Cook County, 2026). Owners who suspect their home sits in that overlap will find a useful frame in the comparison of what comparable homes are selling for in Wilmette, provided they keep the new and older products in separate columns while using it.
Patience can also lift a price, at a documented cost. Wilmette taxes commonly run 18,000 to 35,000 dollars a year, and a listed older home commonly spends 60 to 120 or more days on the market. Four to seven months of market time costs 30,000 to 60,000 dollars in pure hold expense, before mortgage, insurance, utilities or maintenance. A seller who holds for a household buyer at a higher figure is buying that chance with monthly tax payments of 1,500 to nearly 3,000 dollars. Sometimes the trade succeeds. The point is to enter it with the meter visible.
What does the gap require from an owner choosing how to sell?
It requires the owner to sell the asset the market is actually pricing. If the realistic value of an older home is mostly its land, the natural buyers are builders, and the direct route is built for that negotiation. If the home is finished to a current standard, the household market may reward a listing, with its showings, inspections and mortgage timetable accepted as the price of reaching that buyer.
The direct route carries five documented advantages that matter precisely because of the gap. Privacy protects the seller from a public campaign for a house the eventual buyer may not keep: no showings, no open houses and no public marketing period. Flexible closing fits the move to the sellers calendar, in 7 to 21 days or months out with a leaseback style arrangement, against 60 to 120 plus days for a listed older home. No commissions save the typical 5 to 6 percent, or 37,500 to 45,000 dollars on a 750,000 dollar sale (National Association of Realtors, 2025). No seller closing costs remove a further typical 1 to 2 percent, with the commission and closing lines commonly exceeding 50,000 dollars together on a 750,000 dollar Wilmette sale. An as is purchase removes inspections and repairs from the negotiation, with no 10,000 to 30,000 dollar repair credits and no inspection concessions of the 15,000 to 35,000 dollar scale that older North Shore homes routinely attract once a household inspection begins.
Net figures make the comparison honest. The research ledger records a 750,000 dollar listed price netting in the high 500,000s after a normal market cycle, before any price reduction. Against that, a direct land based price that looks lower on the first line can net closely, or better, once commissions, closing costs, concessions and months of taxes are removed from the other column. That is the comparison the net proceeds calculation for Wilmette sellers walks through, and it is the comparison this price gap makes unavoidable for every owner of an older home.
How is a buyer who uses the gap as a talking point kept accountable?
In this market Frontier Capitals works between owners and builders, arranging off market purchases for builder buyers while operating as a wholesaling firm, and it builds nothing itself. It does not claim to be a builder and it does not carry out the construction whose prices fill this report. In a negotiation where a buyer explains a low offer by pointing at land value, that honesty about roles matters, and so do documents.
Verify proof of funds in the buyer name, dated within 30 days. Check recorded deeds in the buyer entity name in county records, so the buyers history of paying land prices can be seen rather than described (Cook County Recorder of Deeds, 2026). Insist that the deposit put down at signing reach at least the customary 1 percent level, rather than settling for a token sum. Refuse to treat an assignment clause with a nominal deposit as a serious land purchase, because that pairing marks a contract not meant to close. A builder who genuinely works the Wilmette replacement market, under village permit rules and at the finished prices documented here, can produce those items without hesitation (Village of Wilmette, 2026). A seller can also review the coverage information to confirm the address falls within the geography this research describes.
Methodology and limitations
The central figure in this report is the sample average from the study compiled for this series: 12 homes in 60091 built before 1981, all 12 acquired by builders, with older homes averaging 27.5 percent of new build prices on comparable lots (Frontier Capitals, 2026). The 100.0 percent builder demand rate from that sample is a small sample result and is stated with that caveat wherever it is used. It is not a census of 60091. Finished prices are the documented range for new construction on comparable lots in sold listings, cross referenced in the research with county parcel material (Redfin, 2026; Cook County, 2026).
The residual illustration is labelled here, as in the research, a simplified model: a 2,300,000 dollar finished sale, roughly 950,000 dollars in hard and soft construction costs, a margin near 20 percent and residual land value near 890,000 to 980,000 dollars before site preparation of 30,000 to 45,000 dollars. No cost in that illustration was audited for this report. For this analysis the authors visited no home in person and commissioned no formal valuation of any parcel. Individual homes fall on both sides of the 27.5 percent average for reasons of lot width, street, condition and lake or centre proximity that parcel level work must assess separately.
Conclusion
Buyers in Wilmette pay more for new construction than for older homes by a measured and large margin: older homes averaged 27.5 percent of new build prices on comparable lots, new construction sold for 1,800,000 to 2,900,000 dollars, and the worked pair in the research sets an older home near 633,000 dollars against a 2,300,000 dollar new build. The difference is accounted for by land, by roughly 950,000 dollars of construction in the illustration, by margin and by the immediacy of a finished home in the New Trier district. An owner who understands that account can price the asset buyers see, instead of asking an older house to carry a new houses price tag.
Owners who would like the ratio and the residual reading applied to a specific Wilmette lot can telephone Frontier Capitals at 401-219-4207 or email [email protected].
If the finished house next door is worth more than three times yours, is the difference an insult to your home, or is it the market pricing the ground beneath both of them?
Frequently Asked Questions
How much more do buyers pay for new construction in Wilmette?
In the sample, older homes averaged 27.5 percent of new build prices on comparable lots, so new construction commanded a little more than three and a half times the older home figure on that average (Frontier Capitals, 2026). New construction itself sold for 1,800,000 to 2,900,000 dollars (Redfin, 2026).
What does the 27.5 percent ratio mean for a specific home?
It is an average, not a valuation. Applied to the research example, a 2,300,000 dollar new build on a comparable lot corresponds to an older home near 633,000 dollars. A specific home can sit above or below the ratio depending on lot width, street and condition.
Why does a renovated older home still trail a new build?
The research illustration shows a 150,000 dollar renovation adding 100,000 to 125,000 dollars for a live in buyer and 0 dollars for a buyer who clears the lot. Renovation improves an older home within its own band without giving it a new structure, new systems throughout or a builders warranty.
Do builders really buy most older Wilmette homes?
In the sampled group they bought all of them: 12 of 12 pre-1981 homes, for a 100.0 percent rate that this report presents with its small sample caveat (Frontier Capitals, 2026). The result shows the strength of builder demand for the sampled older stock, not a count of every sale in the ZIP code.
Should an owner price an older home from new construction sales nearby?
Not directly. New sales set the ceiling that makes the land valuable, while the older home trades at a fraction of that ceiling, 27.5 percent on average in the sample. Pricing from the ceiling without the ratio invites months of market time at Wilmette tax levels.
Sources
- Frontier Capitals, 2026. 189 neighborhood builder demand sample: 12 homes sampled in 60091, 12 acquired by builders, average older home price 27.5 percent of new build. Market data.
- Cook County, 2026. Parcel and assessment records, Wilmette IL. Official record.
- National Association of Realtors, 2025. Typical seller commission structures, Chicago market. Industry report.
- Redfin, 2026. Recently sold homes and new construction, ZIP code 60091, Wilmette IL. Market data.
- U.S. Census Bureau, 2025. QuickFacts: Cook County, Illinois. Government data.
- Zillow, 2026. Home values and recently sold, 60091. Market data.
- Cook County Assessor, 2026. Parcel dimensions, zoning, and assessed land value records for 60091. Official record.
- Cook County Recorder of Deeds, 2026. Title, lien, and easement records. Official record.
- Village of Wilmette, 2026. Building permit records and foundation construction requirements. Official record.
- Federal Housing Finance Agency, 2026. House Price Index. Government data.