London Deals Now Take Nearly Six Months to Complete — Why It Matters

Property transactions in London now take an average of 174 days to complete from the point a sale is agreed, according to new analysis from Rightmove — making the capital comfortably the slowest-moving market in Britain. By contrast, Scotland's distinct legal system delivers completions in just 98 days, while the North East of England leads the English regions for speed. The gap of nearly ten weeks between London and Scotland is not a statistical quirk; it is a structural feature of the market that has significant implications for anyone buying, selling, financing or developing property in the capital.

This matters enormously for investors because time is money in ways that go well beyond the obvious. A buy-to-let landlord who agrees a purchase in January but does not complete until July is exposed to nearly six months of price volatility, mortgage rate risk, and the possibility that a vendor gets cold feet or receives a higher offer. With average London property values sitting north of £520,000, a 174-day chain exposes buyers to potentially tens of thousands of pounds in swing risk if interest rates move, as they have done repeatedly over the past two years. Compare this with Scotland's 98-day average, underpinned by the Scottish system of concluded missives that creates binding certainty far earlier in the process, and it becomes clear why some investors are increasingly looking north of the border, or at least factoring conveyancing speed into their return calculations.

The regional variation also reshapes the calculus for portfolio landlords weighing where to deploy capital. Manchester, Birmingham and Leeds have all benefited from investor migration away from London in recent years, driven primarily by yield differentials — London gross yields often sit at 3-4% against 6-7% in parts of the North West and West Midlands. Transaction speed adds another layer to that argument. Faster completions in the North East and similar northern markets mean capital is recycled more quickly, chains collapse less often, and investors can react to market conditions with greater agility. For a landlord running a leveraged portfolio, the ability to complete a disposal in ten weeks rather than six months is a meaningful liquidity advantage, particularly when refinancing deadlines or bridging loan costs are involved.

First-time buyers in London face a particularly acute version of this problem. Lengthy chains increase the risk of falling through — research from conveyancing bodies has long suggested that roughly a third of transactions collapse before completion, and the longer a deal takes, the greater the window for a buyer's circumstances, mortgage offer validity, or a seller's intentions to change. Mortgage offers typically last three to six months, meaning London's average completion time sits right at the edge of, or beyond, many standard offer windows. This forces buyers into costly offer extensions or, worse, renegotiated rates if base rates have shifted in the interim — a live risk given the Bank of England's data-dependent stance on rate cuts through 2024 and into 2025.

Developers and commercial investors should also take note. Build-to-rent operators and those assembling development sites in London via multiple linked transactions face compounding delays, since each extended residential chain in a site assembly increases the probability of the whole package unravelling. This is one reason why institutional capital has increasingly favoured direct-from-developer forward funding deals over piecemeal acquisition in London, where speed and certainty of completion command a premium. Surrey and the wider commuter belt, which draw heavily on London-linked chains, inherit much of this same drag, whereas standalone regional developments in Newcastle or Liverpool, less reliant on complex onward chains, tend to move faster and offer more predictable delivery timetables for housebuilders.

Over the next six to twelve months, expect London's completion times to remain stubbornly slow unless there is meaningful reform to searches, digital ID verification, and local authority response times — the three most commonly cited bottlenecks by conveyancers. The government's ongoing push towards digitising property data and standardising material information at listing stage could, if implemented properly, shave weeks off the process, but London's transaction complexity — higher share of leasehold flats, longer chains, greater reliance on international buyers — means it will likely retain its position as Britain's slowest market even if absolute times improve. Investors should treat conveyancing speed as a pricing input, not a footnote: build longer rate-lock periods into mortgage arrangements, price in chain-break risk when bidding, and recognise that regional markets offering faster, more certain completions may command a growing premium in investor demand even where headline yields are lower.