Two towns eight miles apart in the Tees Valley sold homes for exactly the same money in 2025. Across the year, the median sale price in Stockton-on-Tees landed at £180,000 (3,043 sales). In neighbouring Darlington, the median was also £180,000 (1,790 sales) — the two towns tied exactly on the headline number — part of the wider Teesside true cost of buying comparison, despite Stockton recording 70% more transactions (HM Land Registry Price Paid Data, data fetched 30 October 2026).
That tie looks like it means the two markets are interchangeable. It doesn't. Split the sales by property type and Darlington is the more expensive town in three of four categories — sometimes by a wide margin. The identical headline figure is not a sign of two similar markets; it is two differently-shaped markets landing on the same number by coincidence of mix.
Darlington costs more by type — but sells fewer of the expensive type
Here is the 2025 median price by property type in each town.
| Property type | Stockton-on-Tees | Darlington | Difference |
|---|---|---|---|
| Detached | £295,000 | £295,000 | Tied |
| Semi-detached | £163,000 | £170,000 | Darlington +4.3% |
| Terraced | £120,000 | £127,225 | Darlington +6.0% |
| Flat | £80,000 | £95,000 | Darlington +18.8% |
Detached houses are the only category where the two towns match exactly. On every other type, a Darlington buyer paid more for the same kind of home in 2025 — noticeably more on flats, where the gap is close to a fifth.
If Darlington is dearer on three of four property types, why does its overall median sit level with Stockton's, rather than above it? The answer is in what each town actually sold.
The two towns sell very different mixes of housing
| Property type | Share of Stockton sales | Share of Darlington sales |
|---|---|---|
| Detached | 34.0% | 28.0% |
| Semi-detached | 40.0% | 40.1% |
| Terraced | 22.4% | 25.7% |
| Flat | 3.6% | 6.2% |
Stockton sold proportionally more detached houses — its single most expensive category — and proportionally fewer terraces and flats, its two cheapest. Darlington's sales leant the other way: relatively fewer detached houses, relatively more terraces and flats.
Put the two tables together and the mechanism is straightforward. Darlington's homes cost more, type for type. But Darlington's sales are weighted more heavily toward its cheaper types, and less heavily toward its most expensive type, than Stockton's are. A higher price per type and a cheaper mix of types pull the overall median in opposite directions — and in this case they land on exactly the same number.
It's a tidier version of a pattern already seen at city scale: Birmingham and Manchester's medians sit within 6% of each other despite Manchester costing noticeably more on three of four property types, because the two cities sell very different proportions of flats and detached houses. Stockton and Darlington show the same mechanism can produce an exact tie, not just a narrow gap, when the mix and the price-per-type differences happen to offset almost precisely.
What this means if you're pricing a move
A single "average house price" headline for either town tells you almost nothing about what you, specifically, would pay — because it depends entirely on which type of home you're buying. A buyer comparing semi-detached houses would see Darlington run about £7,000 dearer than Stockton. A buyer comparing flats would see a gap closer to £15,000. A buyer comparing detached houses would see no difference at all.
The purchase costs that follow from price are close to identical either way. Both towns' medians sit well under the £300,000 first-time buyer nil-rate Stamp Duty Land Tax (SDLT) threshold, so a first-time buyer purchasing at either median pays no SDLT. A home-mover (no relief available) pays a modest £1,100 in either town under the standard SDLT bands — nil on the first £125,000, 2% up to £250,000 (HMRC, 2026). At the Bank of England's latest quoted five-year-fix rate at 75% loan-to-value — 4.32%, unchanged since April 2026 — a 25-year repayment mortgage on either £180,000 median works out at roughly £736.65 a month. Your own rate will depend on your lender, deposit and credit profile; this figure uses one published reference rate for comparison, not a personal quote.
The one place the two towns do diverge on recurring cost is council tax: Stockton's 2026-27 Band D bill is £2,589.83 against Darlington's £2,493.83, a gap of about £96 a year that has nothing to do with the house price tie. The two towns have already been compared head-to-head on energy ratings, where Stockton's stock currently rates markedly greener.
As an example of what a mid-market Stockton semi-detached actually looks like: 9 Whinfell Avenue, Stockton-on-Tees (TS16 0HY), sold for £160,000 in July 2025 — close to the town's £163,000 semi-detached median. Searching any postcode on Homecost shows the recorded sale history, floor area and EPC rating behind the averages.
For more Tees Valley comparisons, including Middlesbrough, Hartlepool and Redcar and Cleveland, see the full five-town Teesside buy-vs-run comparison, or browse more regional price guides.
This is general information based on recorded sale prices and published rates, not financial or property advice. Speak to a qualified adviser before acting on any purchase decision.