Homecost has already compared Stamp Duty Land Tax (SDLT) against council tax for a home mover and for a first-time buyer, across the same twelve English local authorities. The additional-property version of that comparison — for a second home, buy-to-let or any other extra dwelling — produces a genuinely different shape: this is the one buyer class whose stamp duty bill never reaches zero, anywhere in the country, and it is also the buyer class for whom the huge gap between England's cheapest and priciest areas mostly disappears.
Buying an additional property in England means paying the standard SDLT scale plus a flat 5 percentage point surcharge (Finance Act 2003, Schedule 4ZA) on the whole price, with no nil-rate band of its own. That single design choice reshapes the whole ladder.
The ladder
Using each authority's median 2025 sale price (HM Land Registry price-paid data, category A residential sales, England, fetched 13 September 2026), the additional-property SDLT on that price, and the 2026-27 Band D council tax bill (gov.uk), the years-to-equal ratio for an additional-property buyer looks like this:
| Local authority | Median price (2025) | Additional-property SDLT | Band D (2026-27) | Council tax to equal SDLT |
|---|---|---|---|---|
| Westminster | £880,000 | £78,000 | £1,049.55 | ~74.3 years |
| Kensington & Chelsea | £1,190,000 | £122,250 | £1,666.65 | ~73.3 years |
| Wandsworth | £650,000 | £55,000 | £1,028.21 | ~53.5 years |
| Windsor & Maidenhead | £545,000 | £44,500 | £1,952.62 | ~22.8 years |
| Dorset | £345,000 | £24,500 | £2,765.02 | ~8.9 years |
| England (national median) | £300,000 | £20,000 | £2,410.97 | ~8.3 years |
| Darlington | £180,000 | £10,100 | £2,493.83 | ~4.1 years |
| Stockton-on-Tees | £178,000 | £9,960 | £2,589.83 | ~3.9 years |
| Hartlepool | £159,500 | £8,665 | £2,560.20 | ~3.4 years |
| Middlesbrough | £158,000 | £8,560 | £2,549.16 | ~3.4 years |
| Kingston upon Hull | £142,950 | £7,506.50 | £2,295.04 | ~3.3 years |
| County Durham | £146,500 | £7,755 | £2,622.15 | ~3.0 years |
| Blackpool | £137,000 | £7,090 | £2,513.22 | ~2.8 years |
The national row uses England's 2025 median category-A sale price (£300,000, from 758,160 sales) and the average Band D across England's 296 billing authorities. Figures rounded; sale prices from HM Land Registry price-paid data, Band D from gov.uk, stamp duty from the live SDLT scale (region: England).
Even in Blackpool, England's cheapest authority in this table, an additional-property purchase still generates just under three years' worth of council tax in one-off tax. That floor never reaches zero, because the surcharge has no equivalent of the first-time-buyer nil-rate band — first-time buyers pay nothing on the same Blackpool purchase up to £300,000, but an additional-property buyer on that same price pays 5% of the full amount from the first pound.
Why the north-south spread shrinks
For a home mover, the gap between the top and bottom of this ladder is enormous: Kensington and Chelsea's stamp duty is worth roughly 390 times as many years of council tax as Blackpool's, because the mover scale is dominated by slab thresholds that barely touch a cheap northern purchase. For an additional-property buyer, the same top-to-bottom spread collapses to about 26 times — a more than fourteen-fold compression.
The mechanism is visible in how much each area's tax bill grows once the surcharge is added. In Kensington and Chelsea, the additional-property SDLT (£122,250) is roughly 1.95 times the mover SDLT (£62,750) — the price is already deep into the higher slabs, so a flat 5-point addition changes the bill relatively little. In Blackpool, the additional-property SDLT (£7,090) is nearly 30 times the mover figure (£240), because the mover bill on a cheap property is almost entirely inside the 0% and 2% bands, while the flat surcharge still applies to the whole price regardless. The surcharge does proportionally far more work at the cheap end of the market than at the expensive end, which is exactly why it narrows a gap that the ordinary slab system stretches wide.
The order shuffles, too
The ranking isn't just compressed — it reorders in two places once the surcharge is applied. Westminster overtakes Kensington and Chelsea at the top of the table, even though Kensington and Chelsea's median price and cash SDLT bill are both higher, because Westminster's Band D bill (£1,049.55) is over a third lower. Near the bottom, Kingston upon Hull overtakes County Durham for the same reason: Durham's median price and tax bill are slightly higher than Hull's, but Hull's Band D (£2,295.04) is noticeably lower than Durham's (£2,622.15), so the years-to-equal ratio ends up larger in Hull despite the smaller cash tax bill. A low Band D bill, not just a high sale price, is what pushes an area up this particular ladder.
Completing the trilogy
This is the third and final buyer-class cut of the same underlying comparison. The home-mover version found a 36-year top figure in Kensington and Chelsea against roughly five weeks in Blackpool. The first-time-buyer version found the ratio collapses to exactly zero across most of the cheap-to-buy North, because relief covers the whole purchase price up to £300,000. The additional-property version sits between those two extremes in cash terms but produces the narrowest spread of the three, because it is the only one of the three schedules with no threshold at all — just a flat rate applied everywhere.
Three things this doesn't capture
Not every additional-property purchase is a buy-to-let. The surcharge also applies to second homes, holiday homes, inherited shares in a property, and to a purchaser who has not yet sold their previous main residence (in which case the extra 5 points may be reclaimable if the old home is sold within three years).
Band D is a benchmark, not the typical bill. Most homes sit in bands A to C, where the annual charge is lower than Band D — which would stretch every years-to-equal figure in this table further. Homes in bands E to H pay more, which would shorten it.
This is England only. Wales's Land Transaction Tax and Scotland's Land and Buildings Transaction Tax apply their own additional-dwelling surcharges (also flat-rate, at different percentages) on top of different standard schedules and different council tax systems, so the figures above do not transfer across the border.
See it for your own postcode
Homecost calculates the all-in cost of any property, including stamp duty for the buyer's specific situation. Run a second-home or buy-to-let price through the stamp duty calculator with the additional-property surcharge applied, or check the true monthly cost of a Kingston upon Hull postcode — one of the areas in the table above where a landlord's stamp duty bill, though the smallest in cash terms, still equals more than three years of council tax. Based on 758,160 Land Registry transactions and the 2026-27 Band D rate for all 296 English billing authorities, browsed alongside the wider library of cost-intelligence guides.
This is general information, not advice. Stamp duty depends on your specific circumstances, including whether any relief or refund applies to your purchase. Speak to a qualified adviser before acting.