The 130-day squeeze: why slower sales progression is reshaping UK buyer behaviour

The transaction pipeline is getting longer, not shorter

For years, "exchange in 8 to 12 weeks" was the rule of thumb quoted by agents and conveyancers alike. That assumption no longer holds. Industry tracking from TwentyCi/TwentyEA puts the UK average time to exchange at around 123 days in 2025, up from roughly 93 days in 2019 — a stretch of over 40%. Connells Group's own data tells a similar story: in April 2025, the average time from sale agreed to exchange crossed 100 days for the first time on record, and separate reporting has shown the figure drifting towards the 130-day mark in parts of the market through 2025 and into 2026.

This is not a blip caused by one bottleneck. It is a structural widening of the gap between "sold subject to contract" and a legally binding exchange, and it is happening at a time when transaction volumes are not especially elevated — which points to a system-level issue in conveyancing capacity and process rather than simple demand pressure.

For institutional players — lenders, developers, investment managers and larger agency groups — this matters well beyond the inconvenience to individual movers. A property under offer for 130 days is a property whose price, mortgage terms and buyer commitment are all exposed to four-plus months of market movement. That is a meaningfully different risk profile to the 8-to-12-week world most underwriting models were built around.

Where the time is actually going

The lengthening is concentrated almost entirely in the post-offer, pre-exchange phase, not in the time it takes to find a buyer. Connells Group noted that 61% of transactions now take longer to exchange contracts after a sale is agreed than they took to find a buyer in the first place. Rightmove's tracking of the full journey — listing to completion — has shown total timelines running to around 216 days, split roughly 62 days to secure a buyer and a further 154 days from sale agreed to completion.

Leasehold transactions are doing a disproportionate share of the damage. Connells data shows a typical leasehold sale now taking around 155 days to reach exchange, against roughly 98 days for freehold — a gap that has widened from just four days in 2012 to well over 50 days today. Management pack requests, lease reviews and freeholder response times are the recurring culprits, and with leasehold stock concentrated in flats and in London and the South East, this creates a geography- and product-specific drag that professionals active in those segments need to price in explicitly.

Regional variation reinforces the point. TwentyEA's 2025 figures show Scotland completing in around 2.9 months (helped by its legally binding missives system, which removes much of the gazumping/gazundering risk that plagues England and Wales), against 4.6 months in Outer London and the East of England, and 4.5 months in the South East. REalyse data shows comparable regional spread in days-on-market and completion metrics, with detached and leasehold flat stock consistently sitting at the slower end regardless of region — reinforcing that property type, not just geography, is a primary driver of transaction speed.

Fall-through risk is rising, and it is moving later in the process

The more consequential shift for professional users is not the average timeline itself, but what it does to fall-through risk. Connells Group reported that 37% of agreed sales in 2025 did not reach completion, with freehold fall-throughs at 36% and leasehold at 43%. Other industry estimates put the fall-through rate at closer to 24%, with protracted conveyancing cited as a leading cause — the range reflects differences in methodology, but the direction of travel is consistent across sources.

What should concern transaction managers more than the headline rate is the timing shift. Almost a quarter of fall-throughs (23%) now happen more than three months after a sale is agreed, up from 18% in 2019. Freehold deals that collapse do so after an average of 85 days; leasehold deals collapse later still, at around 115 days. In other words, the deals most likely to fail are increasingly failing deep into the process, after valuation reports, searches and mortgage offers have already been issued — maximising sunk cost and disruption for every party in the chain.

Nearly one in five homes (17%) now take more than six months to exchange after going under offer, against 13% a year earlier and just 5% a decade ago. For agents and developers managing chains of three or more linked transactions, that tail risk compounds: a single slow link anywhere in the chain now has a longer window in which to derail every other transaction attached to it.

Why this matters for chains, lenders and portfolio transactions

• Chain management: longer progression windows mean more opportunity for a buyer's circumstances, mortgage offer, or survey outcome to change mid-chain. Agents coordinating linked sales should expect to actively manage communication and milestones over four-plus months, not the six-to-eight-week window chains were historically built around.

• Lender exposure: mortgage offers typically carry a fixed validity window (commonly three to six months). A 130-day sale-agreed-to-exchange timeline leaves materially less buffer before offers expire or need re-underwriting, particularly if a rate review or product switch falls inside that window. Lenders and brokers may increasingly need to build re-offer and rate-lock contingencies into their process assumptions as standard, rather than as an edge case.

• Portfolio and institutional transactions: for investors and developers transacting at volume — disposals, bulk sales, build-to-rent stock transfers — a longer and less predictable progression period widens the window during which comparables, valuations and rental assumptions can move before completion. This increases the value of maintaining live, frequently refreshed market and comparable data through the holding period, rather than relying solely on figures struck at the point of instruction.

What this means for pricing, valuation and underwriting assumptions

The practical implication for professional users is that transaction timeline risk now deserves the same explicit treatment as price risk or void risk. A few areas where this is already showing up:

Valuation currency. When 130 days can separate sale agreed from exchange, a valuation or comparable set struck at the point of offer may be materially stale by completion, particularly in fast-moving local markets. Refreshing comparables and local price trend data closer to exchange — rather than relying solely on the figures used at instruction — is a more defensible basis for both vendor advice and lender collateral checks.

Risk-adjusted deal appraisal. Development managers and investment analysts underwriting acquisitions with linked disposals (for example, funding a purchase from a chained sale) should treat the 100-to-130-day exchange window as a base case rather than an optimistic one, and stress-test GDV and cash flow timing assumptions accordingly — particularly for leasehold-heavy schemes or those in slower-moving local authority areas.

Agency positioning. For branch managers and valuers, being able to demonstrate local, evidence-based transaction speed and fall-through data — rather than generic national averages — is a differentiator when setting vendor expectations and managing conversion from instruction through to completion. Local authority and even postcode-district-level variation in days on market and conveyancing speed can be significant, and demonstrating command of that data builds credibility in difficult pricing conversations.

Lending and intermediary risk framing. Brokers and credit analysts assessing applications tied to a sale in progress should treat the sale-agreed date as the start of an extended exposure window, not a near-complete transaction, and factor the elevated late-stage fall-through risk into timing and contingency advice given to clients.

Outlook

Momentum for reform exists — government consultation on reducing transaction times and costs is ongoing, and an industry-led initiative (Project 28) has set an explicit ambition of cutting sale-agreed-to-exchange timelines from 100-plus days to 28. Digitisation of local authority searches, earlier-stage property information packs and tighter service-level commitments from conveyancers are the most commonly cited levers. But with conveyancer capacity reportedly shrinking and compliance requirements (including recent anti-money-laundering and property information form changes) adding rather than removing steps, the near-term trajectory still points to transactions taking longer before they take less time.

For developers, lenders, investors and agents, the sensible response is not to wait for systemic fixes but to build the 130-day reality into day-to-day transaction management: fresher comparables closer to exchange, explicit fall-through and timeline risk in underwriting, and sharper visibility of where — by region, local authority and property type — the squeeze is tightest.