How South West London buyers can negotiate the best deals this summer with property stock at a 12-year high
Buyers have more choice this summer, but that does not mean every seller is ready to discount. Rightmove's July index shows an average of 65 homes for sale per agent nationally, still very close to a 12-year high for the time of year.
In London, the average new asking price was £676,248, down 1.6% month on month and 1.2% annually, while the average time to secure a buyer was 70 days, not 73. Rightmove also found that 74% of homes sold and completed so far in 2026 did so without an asking-price reduction.
What the stock figures actually mean
More supply gives buyers choice, but pricing still matters. Rightmove reported that sales agreed in the first half of 2026 were 6% below the same period in 2025 but level with 2024.
Office for National Statistics data shows weaker completed-sale prices in London. The average London house price was £545,000 in May 2026, down 3.7% annually. Inner London fell 5.9%, while Outer London fell 0.3%. Our guide explains why pricing strategy has become the deciding factor for local sellers.
Where the negotiating room may be
| Situation | Likely negotiating room | Why |
|---|---|---|
| Fresh listing, sensibly priced | Limited | Sellers may wait for more interest |
| Listed 8 to 12 weeks | Moderate | A longer marketing period can strengthen a credible offer |
| Reduced once and still unsold | Stronger | The seller has already adjusted expectations |
| Chain-free seller with a deadline | Potentially strong | Certainty may matter alongside price |
| New listing above comparable sales | Limited initially | Revisit if it remains unsold |
These are negotiating indicators rather than fixed rules. The seller’s circumstances and competing interest still matter.
Be the buyer they can say yes to
Certainty can be as important as price. Rightmove says the average period from sale agreed to completion was 167 days, or around 5.5 months, as of March 2026. Our this look at why transactions take so long covers the common delays.
Have a mortgage in principle ready, organise proof of funds and instruct a solicitor promptly. See our piece on cooling mortgage approvals and our note on recent mortgage rate movements. Rightmove’s July snapshot put the average two-year fixed mortgage rate at 4.92%, down from 5.08% the previous month, although mortgage pricing can change quickly.
Do the sums before making an offer
For a £700,000 purchase in England, standard residential SDLT is £25,000 where higher rates do not apply. First-time buyer relief is unavailable where the purchase price exceeds £500,000. An additional £700,000 residential property subject to the higher rates would instead attract £60,000 of SDLT. Our stamp duty guide for local buyers explains the bands.
A 5% reduction on a £700,000 asking price saves £35,000. If you are considering a flat, also check the unexpired lease term and read our comparison of leasehold and freehold before committing.
Frequently asked questions
Is summer 2026 a buyer’s market in London?
Buyers have more choice and London asking prices have softened, but well-priced properties can still sell without reductions. Negotiating strength depends on the property, seller and competing interest.
How much below asking price should I offer?
There is no universal percentage. Use comparable sold prices, time on market, previous reductions and the seller’s circumstances to support your offer.
Are off-market properties worth considering?
They can be. Some homes are marketed privately before appearing on major portals. Our guide to off market properties explains how these opportunities work.
Start with a conversation
Lets Find A Home has worked with buyers, sellers and landlords in Wandsworth since 2004. Browse properties for sale in south west London, read our advice for buyers, or compare commercial property for sale and commercial units to let. Call 020 8870 5800 or see how we work at Lets Find A Home.
Click here to schedule an appointment with Matt, founder of Lets Find A Home