Across 62,931 Doncaster homes with a current Energy Performance Certificate, 40.8% are rated C or better — close to the level seen nationally. But that borough-wide figure hides a wide split between postcodes, and the split tracks when the housing was built far more closely than what it costs. The oldest, most terraced parts of the town rate lowest; the newest estates on the eastern edge rate highest.
This is a look at how energy efficiency is distributed across Doncaster's DN and S postcodes, using Energy Performance Certificate lodgements and HM Land Registry sold-price records. It reports what the data shows about the existing stock — not what any individual home is worth, and not what anyone should do about it.
Figures below were compiled on 1 September 2026 from the current EPC register (latest certificate per address) and Land Registry price-paid records for 2025 (standard sales of houses and flats). Council tax is the 2026-27 Band D charge.
Energy ratings by postcode
The table ranks each Doncaster postcode district by its 2025 median sold price, alongside the share of homes rated EPC C or better. Postcodes are included where at least 200 homes have a current certificate and at least 30 standard sales completed in 2025.
| Postcode | Main areas | 2025 median price | 2025 sales | EPC C or better |
|---|---|---|---|---|
| DN1 | Doncaster town centre | £97,500 | 56 | 21.0% |
| S64 | Mexborough | £135,000 | 196 | 38.2% |
| DN12 | Conisbrough, Denaby Main, Edlington | £140,000 | 262 | 39.9% |
| DN8 | Thorne, Moorends | £150,000 | 227 | 41.3% |
| DN6 | Askern, Carcroft, Skellow, Woodlands | £160,000 | 353 | 38.3% |
| DN2 | Wheatley, Intake, Bentley Rise | £175,000 | 269 | 31.8% |
| DN4 | Balby, Bessacarr, Cantley | £180,000 | 782 | 44.1% |
| DN7 | Hatfield, Dunscroft, Stainforth | £180,000 | 331 | 47.2% |
| DN5 | Bentley, Scawthorpe, Sprotbrough | £182,000 | 547 | 33.6% |
| DN3 | Armthorpe, Kirk Sandall, Barnby Dun | £200,000 | 508 | 45.7% |
| DN11 | Rossington, Harworth, Tickhill | £215,000 | 300 | 43.3% |
| DN9 | Auckley, Finningley, Blaxton | £253,000 | 139 | 66.9% |
| DN10 | Bawtry, Misterton | £275,000 | 67 | 41.9% |
Two patterns stand out at the extremes. DN1, the town centre, is both the cheapest place to buy and the coldest on paper — a £97,500 median and just 21.0% of homes at band C or better, the lowest share in the borough. At the other end, DN9 around Auckley and Finningley is the dearest and the most efficient, with a £253,000 median and 66.9% at C or better.
But the middle of the table is where the neat "cheaper equals colder" story breaks down. DN7 (Hatfield, Dunscroft, Stainforth) shares an £180,000 median with DN4 yet posts 47.2% at C or better — above the borough average and ahead of several dearer districts. DN2 (Wheatley) and DN5 (Bentley, Scawthorpe) sit in the middle of the price range but below the average on efficiency, at 31.8% and 33.6%. And DN10 (Bawtry) is the priciest district in the table yet rates only 41.9% — a reminder that a higher price tag does not guarantee a warmer home. Price and energy rating are related, but they are different axes.
Why the gap follows build era
The clearest driver is not location or price but the age of the housing. Sorting Doncaster's certificates by the era each home was built produces a steep, consistent gradient:
| Build era | Share rated C or better |
|---|---|
| Before 1900 | 9.3% |
| 1900–1929 | 15.8% |
| 1930–1949 | 21.8% |
| 1950–1966 | 31.2% |
| 1996–2002 | 53.2% |
| 2003–2006 | 93.6% |
| 2007 onward | 95%+ |
The jump between the 1996–2002 band (53.2%) and the 2003–2006 band (93.6%) is the sharpest step in the whole series. It lines up with the 2002 revision to Part L of the Building Regulations, which tightened the energy-efficiency standards new homes had to meet in England and Wales. Homes built after that point start life with the insulation, glazing and heating that push a certificate into band C or above; older homes reach the same standard only through retrofit work.
That gradient explains the postcode table almost entirely. Look at the composition of the two extremes: in DN1, 92.4% of certificated homes were built before 1950 and barely 1% date from 2003 or later — a dense core of Victorian and Edwardian terraces and older flats. In DN9, only 5.9% pre-date 1950 while 12.4% were built from 2003 onward, reflecting newer estate development on the town's eastern edge. Same borough, opposite ends of the age curve, opposite ends of the efficiency table.
This is why the pattern is best read through stock age rather than anything about the people who live in each postcode. Doncaster's colder districts are colder because their housing is older, and older housing predates the standards that make newer homes efficient by default. The same mechanism appears across South Yorkshire — see the equivalent breakdowns for Rotherham's retrofit gap by outcode and Sheffield's EPC ratings by postcode, where the same 2003 cliff shows up.
What a rating band means for running costs
An EPC estimates how efficiently a home uses energy, and a lower band generally implies higher modelled heating and lighting costs than a higher band of the same size. The certificate also lists the modelled improvements — insulation, glazing, heating upgrades — that would move a property up the scale. Those are modelled figures, not bills, and actual costs depend on the property, its occupants and energy prices. For how the bands translate into typical energy costs, see EPC ratings explained for house buyers and the worked comparison in energy cost by EPC rating.
Across the borough, 2.1% of homes (1,350 of 62,931) sit in the lowest F or G bands, concentrated in the oldest stock. The great majority of Doncaster homes rate D or C.
The cost side
For context on the purchase side, Doncaster's 2025 median stood at £180,000 across 4,067 standard sales — roughly 61% of the £295,000 England-and-Wales median. By type, the median was £110,000 for a flat, £122,000 for a terrace, £170,000 for a semi and £280,000 for a detached home. At the £180,000 median, Stamp Duty Land Tax works out at £1,100 for a home mover, £0 for an eligible first-time buyer, and £10,100 where the additional-property surcharge applies (HMRC rates, 2026). Council tax is charged on top: Doncaster's 2026-27 Band D is £2,167.75 — the lowest of the four South Yorkshire authorities. The wider picture across the county is set out in the South Yorkshire buy-and-run cost comparison and the Doncaster average house price guide.
This is general information, not advice. Energy-efficiency work, mortgage costs and tax all depend on individual circumstances — speak to a qualified adviser before acting.
See the numbers for a street
Homecost pulls the sold-price history, council tax, energy rating and estimated running costs for every home on a street from one postcode. Try a Doncaster town-centre postcode such as DN1 2AY, or browse more area breakdowns in regional prices and the full guides library.
Based on 62,931 current Energy Performance Certificates and 4,067 Land Registry sales for Doncaster (2025), with 2026-27 council tax rates.