Key Takeaways
- Values are creeping, not climbing: Zillow's index put the city of Wilmington at $330,955 as of July 31, 2026, up 1.4% year over year, against $410,192 statewide.
- Closings read lower than the index: Redfin reported a median sale price of $249,500 for Wilmington in May 2026, on 45 median days on market.
- The reassessment is the local story: New Castle County finished its first general reassessment since 1983, and every parcel is now valued at fair market value as of July 1, 2024.
- Your 2026 bill arrives late: the county expects to mail FY27 bills in mid-November 2026, with payment due December 31, 2026.
- Appeals exploded: more than 5,300 appeals came out of the 2025 reassessment against a historical average of about 64 per year, with more than 1,500 new 2026 appeals on top.
- Rowhome condition still decides the sale: financed buyers price old wiring, plumbing, and roofs regardless of what the market index says.
The Wilmington housing market in 2026 is a slow-growth market with a loud tax story running underneath it. Values are up slightly, closings are steady, and the thing actually changing seller math is a court-ordered property reassessment, the county's first in more than forty years.
This guide keeps every source separate and labeled. Zillow models a typical value across all houses, Redfin reports what closed, and New Castle County sets what you owe. Averaging them together produces a number that describes no real house on Union Street.
What is the Wilmington housing market doing in 2026?
Wilmington values rose about 1.4% over the past year, slower than the metro around it and roughly in line with the state. Zillow's Home Value Index put the city at $330,955 as of July 31, 2026, against $326,312 a year earlier (Zillow Research, ZHVI, July 31, 2026).
Context matters more than the single figure. The city sits well below both the state reading and the Philadelphia-Camden-Wilmington metro area it belongs to.
| Source | Metric | Value | As of |
|---|---|---|---|
| Zillow ZHVI | Typical value, city of Wilmington | $330,955 (+1.4% YoY) | July 31, 2026 |
| Zillow ZHVI | Typical value, Delaware statewide | $410,192 (+1.3% YoY) | July 31, 2026 |
| Zillow ZHVI | Typical value, Philadelphia-Camden-Wilmington metro | $392,329 (+2.5% YoY) | July 31, 2026 |
| Redfin Data Center | Median sale price, city of Wilmington | $249,500 (+3.7% YoY) | May 2026 |
| Redfin Data Center | Median days on market, Wilmington | 45 days | May 2026 |
| New Castle County | Assessment base year, all parcels | Fair market value as of July 1, 2024 | September 2026 |
| ATTOM | Delaware foreclosure rate, 4th highest state | 1 in 2,579 housing units | July 2026 |
The Zillow figure and the Redfin figure measure different things and should never be averaged. Zillow's index estimates a typical value across every qualifying house in the city. Redfin's median is the middle price among the houses that actually closed in one month.
Wilmington DE Home Prices at the Closing Table
Wilmington DE home prices at closing ran well below the value index. Redfin reported a median sale price of $249,500 in May 2026, up 3.7% from a year earlier (Redfin Data Center, city market tracker, May 2026). Seventy-eight houses closed that month across all residential property types.
The rest of that month's readings fill in the texture:
- Median days on market: 45, one day slower than May 2025.
- Active inventory: 251 listings, about 3.2 months of supply.
- Average sale-to-list ratio: 97.4%, so the typical house closed below asking.
- Sold above list: 28.2%, meaning roughly seven in ten did not.
- Listings with a price drop: 32.3%.
The property mix explains most of the gap between the two sources. Townhouses and rowhomes accounted for 63 of the 78 May closings at a median of $241,000, while the five detached single-family sales carried a much higher median. Wilmington is a rowhome city, and the closing data reflects that.
The New Castle County Reassessment, the First Since 1983
New Castle County reassessed every parcel because a court ordered it to, not because the county chose a new cycle. In In re Delaware Public Schools Litigation, decided May 8, 2020, the Court of Chancery held that all three Delaware counties were assessing property in a way that violated state law.
Two rules were broken. Delaware's True Value Statute requires property to be assessed at fair market value, and the Uniformity Clause of the state constitution requires taxpayers in the same class to be treated the same. New Castle County had been using valuations that took effect in 1983 (Delaware Court of Chancery, C.A. No. 2018-0029-JTL, May 8, 2020).
The effect on owners was uneven. Over the decades, different Wilmington properties appreciated at very different rates. Owners whose houses gained the most paid the lowest effective rate, and the frozen 1983 roll hid that.
What changed on the assessment roll
Every parcel in New Castle County is now assessed at its fair market value as of July 1, 2024 (New Castle County Office of Assessment, September 2026). The county administers roughly 220,000 parcels.
Delaware also locked in a repeating cycle. Under 9 Del. C. § 8306, real property must be reassessed at least once every five years. The clock starts when a county certifies completion of its general reassessment. That language came from House Bill 62, signed August 9, 2023 (Delaware General Assembly, HB 62, 152nd General Assembly).
The city of Wilmington bill moves with the county roll. Delaware law lets a municipality elect by ordinance to use county assessments as its own municipal assessment roll, and Wilmington exercised that right (22 Del. C. § 1101, Title 22, Chapter 11). New county values therefore reach both bills.
Why is your 2026 Wilmington tax bill arriving in November?
Your 2026 county bill is late because state legislation required an extra review before the assessment roll could be finalized. Senate Bill 228 authorized New Castle County to run a quality control review of non-residential properties, and the county retained an outside firm to review a random sample of 50 such properties.
That pushed the calendar twice. Billing moved from mid-July 2026 to mid-November 2026, and the payment due date moved from September 30, 2026 to December 31, 2026 (New Castle County, July 9, 2026). County and school tax rates for FY27 become available on or after October 22, 2026.
The appeal volume shows how much the new values unsettled owners. The county reported managing more than 5,300 appeals from the 2025 reassessment while receiving more than 1,500 new appeals for 2026. Before the reassessment, New Castle County averaged about 64 appeals per year.
Refunds are still moving too. As of June 30, 2026, the county had processed 9,969 school tax refunds worth $3,872,055, with 2,777 left (New Castle County, Reassessment by the Numbers, June 30, 2026).
The formal appeal window closes on an annual deadline, but a correction request does not. If the county record has your square footage, bedroom count, or condition wrong, you can ask the Assessment Office to fix it at any point in the year, even if you never filed an appeal.
What the Reassessment Means for a Long-Held Rowhome
A reassessment does not raise every bill, but it does redistribute the burden toward houses whose 1983 number had drifted furthest below current value. In Wilmington that pattern falls hardest on long-held houses in neighborhoods that appreciated most since the early 1980s.
The west side and Trolley Square
Forty Acres, Trolley Square, the Highlands, and Cool Spring carry brick rowhomes and twins built largely between 1900 and 1930. These blocks have gained the most value in the city, so their owners are the likeliest to see an assessment move up sharply from a 1983 base.
Little Italy and Union Park Gardens sit in the same era of construction with a different ownership pattern. Little Italy holds houses passed down within families for generations, and Union Park Gardens is a 1918 planned garden community built for shipyard workers. Both produce estates with multiple heirs and old title questions.
The east side and northeast Wilmington
Riverside, the East Side, and parts of the 19802 corridor are the value tier, with rental-heavy stock and thinner equity. A higher carrying cost bites harder here as a share of what the house is worth, and deferred maintenance is more common.
Statewide distress is worth watching alongside the tax calendar. Delaware recorded 180 foreclosure filings in July 2026, one in every 2,579 housing units. That was the fourth highest rate of any state, well above the national rate of one in 3,603 (ATTOM, July 2026). Our guide to stopping a foreclosure in Delaware covers the scire facias clock, and Delaware monition sales covers what happens when the tax bill itself goes unpaid.
What does a reassessed bill mean if your house needs work?
A higher carrying cost pressures the decision to sell, and it does nothing to make an old house easier to finance. Condition therefore drives a Wilmington seller's options more than any citywide average does.
Three frictions show up repeatedly on 1900 to 1930 rowhome and twin stock. Inspectors flag knob-and-tube or early wiring, galvanized supply lines, and aging slate or flat roofs. Appraisers struggle when the nearest comparable sales on the block have been renovated and the subject house has not. Party walls add shared roof and masonry questions that a lender may want resolved before closing.
| Your situation | The listing path | Where a direct cash sale fits |
|---|---|---|
| Move-in-ready | Strongest option. About a month and a half to contract at the May median, with a real chance of closing near asking. | Rarely the better economics. Worth a look only when the closing date matters more than price. |
| Dated but sound | Workable. Buyers price the kitchen, bath, and mechanicals in, then ask for repairs after the inspection. | Worth comparing. Run both numbers net of repairs, commission, and months of carrying cost. |
| Needs major work | Hard. Roof, structural, or system problems can end a financed contract at the appraisal or inspection. | Often the practical route. Sold as-is, with no repairs and no lender to satisfy. |
| Tenant-occupied | Slow. Showings need notice, leases transfer, and owner-occupant buyers often walk away. | Strong fit. Propcash can buy with tenants in place, so nobody has to be moved out first. |
| Inherited and empty | Possible once the estate has authority, but taxes, insurance, and utilities keep running. | Common for out-of-state heirs. No cleanout, and the closing date can work around the Register of Wills. |
Heirs face an extra step in Delaware. A full probate cannot close earlier than eight months from the grant of letters because of the creditor-claim window, though a personal representative can usually sell well before that. Our guide to selling an inherited house in Delaware covers what the estate needs first.
Propcash is a direct cash homebuyer, founded in 2026 and based in Nashville. We buy the house ourselves, so you work with the decision-maker from the first call to closing, and cash transactions can close in as few as 7 days. If you need to sell my house fast Wilmington DE searches turned into a real number, you can get a cash offer on your Wilmington house and set it beside what a listing might net.
What Could Change the Wilmington Housing Market Next
Three variables could move the Wilmington housing market away from its current slow-growth reading. Mortgage rates are the first and the most familiar. Freddie Mac put the 30-year fixed average at 6.76% for the week of September 10, 2026, up from 6.35% a year earlier (Freddie Mac Primary Mortgage Market Survey, September 10, 2026).
The FY27 tax rates are the second, and they are still unknown. County and school rates post on or after October 22, 2026, and only then can an owner see what the new assessment actually costs. Higher carrying costs have historically pushed owners of empty or long-held houses toward selling.
State policy is the third. The General Assembly created two 2026 working groups to study Delaware's long-term assessment and property tax framework (New Castle County, July 2026). Nothing they produce would change a 2026 bill.
For how a cash sale works locally, see our Wilmington cash home buyer page or the Delaware cash buyer overview. If listing is the better move for your house, Propcash will tell you so.
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Let's chatFrequently Asked Questions
What is the typical house value in Wilmington DE in 2026?
Zillow's Home Value Index put the city of Wilmington at $330,955 as of July 31, 2026, up 1.4% year over year. Delaware statewide read $410,192, up 1.3%, and the Philadelphia-Camden-Wilmington metro area read $392,329, up 2.5%. Redfin measures something different and reported a median sale price of $249,500 for Wilmington closings in May 2026. The ZHVI models every qualifying house whether or not it sold, while the Redfin figure is the midpoint of what actually closed that month.
Why is the New Castle County reassessment affecting Wilmington sellers?
New Castle County reassessed every parcel for the first time since 1983, so a long-held Wilmington house is now taxed off a current value instead of a 1983 one. The Court of Chancery ruled in May 2020 that the counties' decades-old base years violated Delaware's True Value Statute and the Uniformity Clause. Because Wilmington elected by ordinance to use the county assessment roll for city taxation under 22 Del. C. § 1101, the new values reach the municipal bill as well. Bills move up or down depending on how far the old 1983 number had drifted.
When is the 2026 New Castle County property tax bill due?
New Castle County expects to mail FY27 county and school tax bills in mid-November 2026, with payment due December 31, 2026. Senate Bill 228 required a quality control review of non-residential properties before the assessment roll could be finalized, which moved billing from mid-July and moved the due date from September 30. County and school tax rates for FY27 become available on or after October 22, 2026. Taxes unpaid after the due date carry a 6% penalty on property line items in the first delinquent month and 1% per month after that.
Can you still appeal a New Castle County assessment?
The formal appeal window runs on an annual deadline, and the county reported more than 1,500 new 2026 appeals on top of the more than 5,300 filed against the 2025 reassessment. A separate route stays open all year: an owner can ask the county Assessment Office to fix a factual error about the house, such as square footage or condition. That request works even if no appeal was filed. An appeal itself moves through a structured legal process that can end in judicial review, so it often sits quiet for stretches.
How long does it take to sell a house in Wilmington right now?
Redfin reported a median of 45 days on market for Wilmington closings in May 2026, one day slower than a year earlier, with 251 active listings and 3.2 months of supply. That is the midpoint, so half of what sold took longer, and days on market counts only the listing period rather than the weeks of prep, inspection, and lender underwriting around it. A financed sale on an older Wilmington rowhome routinely adds time at the appraisal and inspection stage.
Does a cash sale make sense in the Wilmington housing market in 2026?
It depends far more on the house and the deadline than on the market average. A clean, financeable Wilmington house with time behind it usually does better on the open market, and Propcash will say so. A cash sale tends to fit when a lender would balk at the condition, when a tenant is in place, when heirs live out of state, or when a firm closing date is the priority. The useful comparison is net proceeds after repairs, commission, and the months of carrying cost, not two headline numbers.
Data Sources: Zillow Research (ZHVI), Redfin Data Center, New Castle County Office of Finance and Office of Assessment, Delaware Court of Chancery, Delaware General Assembly, Delaware Code Titles 9 and 22, ATTOM, Freddie Mac. Propcash is a direct cash homebuyer, not a law firm or a tax adviser. Confirm assessment and appeal questions with the New Castle County Assessment Office.