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The market · September 2026 · 5 min read

The autumn market: choice, timing and the Budget question

London enters September with the widest choice of homes since 2010, asking prices marked down over summer, and a Budget on 28 October. Here is how a careful buyer plays the next eight weeks.



The autumn market begins the week the schools go back, and this year it begins from an unusual starting point. Sellers have already done a good deal of the price adjustment; buyers have more to choose from than at any point in a decade and a half; and the one genuine unknown sits nine weeks away in the Chancellor’s red box.

Where August left us

Rightmove’s August index recorded a 2% monthly fall in asking prices to £364,999 nationally — the largest August drop since 2018 — and an annual decline of 1.0%, the first since 2023. London fell 3.1% in the month, the steepest of any English region, and the portal noted the capital now offers buyers the largest choice of homes since 2010. Rightmove revised its full-year forecast to between flat and minus 2%. Nationwide’s more measured series still showed national annual growth of 1.6% in August, up slightly on July.

Zoopla, looking towards autumn, reported buyer demand up 7% on last year and around 5% more homes for sale, and expects an “autumn bounce” — though with mortgage rates closer to 5% than 4%, it also calculated that a typical household can borrow roughly 9% less than it could in January. That is the market in one sentence: more people looking, with slightly less to spend, at more homes.

Credit and the calendar

Moneyfacts’ averages in early August stood at 5.63% for a two-year fix and 5.66% for five years, with the best rates at 60% loan-to-value nearer 4.4%. The Bank of England did not meet in August; its next decision falls on 17 September. Then comes the Autumn Budget on 28 October. Speculation through August centred on property — including whether the £2 million threshold for the high-value council tax surcharge announced last November, and due from April 2028, might be lowered. Stamp duty itself has not changed since April 2025: the 5% additional-property surcharge and the 2% non-resident surcharge both stand, taking the top marginal rate for an overseas buyer of a second home to 19%.

A London doorcase — engraved

Prime London: supply still building

LonRes’s latest dashboard had new sales instructions in prime London running around 26% above the pre-pandemic average for the time of year, prime central London values still roughly 5% below last year, and the house’s own forecast at minus 2% for 2026 before growth resumes in 2027. Prime rents, by contrast, have turned decisively upward — helped by the fact that lettings above £100,000 a year sit outside the Renters’ Rights Act, which came into force on 1 May.

How to use the next eight weeks

First, do not let the Budget make your decision for you. Fiscal events change the arithmetic at the margin; they rarely change whether a particular home is right. Second, treat the summer markdown as the discount and negotiate from it, not towards it — a home reduced in July and still unsold in September is a seller whose position is known. Third, keep finance agreed and solicitors instructed, because the autumn window is short: serious sellers want to exchange before December, and buyers who are ready move to the front of the queue. On new homes, the same logic applies with more force — developers closing their year will trade generously with a buyer who can complete.

Choice, adjusted prices, a ready buyer and a deadline. That is as good a set of conditions as London has offered a purchaser in some time.

Common questions

Will the Autumn Budget 2026 affect house prices in London?
The Budget is on 28 October 2026 and property taxation was widely discussed in advance. Any change tends to affect the top of the market and investor demand at the margin. For a buyer choosing a home to live in, the fundamentals of the property matter far more than the fiscal detail.
Is autumn a good time to buy in London?
Autumn 2026 opens with the widest choice of homes since 2010, prices marked down over the summer, and sellers motivated to exchange before Christmas. For a buyer with finance agreed it is a strong window.
What are mortgage rates doing in September 2026?
Averages in early August were around 5.6% for two- and five-year fixes, with the best 60% loan-to-value deals nearer 4.4%. The Bank of England’s next decision is on 17 September. A mortgage broker can hold a rate while you search.

Written by Cece Chau, The Address House.

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