Why a marketed sale is structurally built for competition
Instructing an estate agent to sell a property triggers a specific legal duty. Under section 21 of the Estate Agents Act 1979, an agent must pass on every offer received for a property to the seller, in writing, right up until contracts exchange, unless the seller has given clear written instructions to stop. In practice this means a marketed sale is never really closed to new bidders until the moment of exchange, no matter what a seller may have informally agreed with an early buyer.
Layer onto that the status of "subject to contract." Throughout a marketed process in England and Wales, nothing is legally binding. An agreed price, a signed memorandum of sale from the agent, even a verbal handshake, carries no legal weight on its own. Either side can walk away at any point, and critically, a seller remains free to accept a higher offer from someone else right up to exchange.
These two features, taken together, are the mechanical explanation for gazumping and for "best and final offers" rounds. They are not evidence of bad faith by agents or sellers. They are the structure working as designed: a process built, correctly, for a seller trying to secure the highest price through open competition will keep every credible offer alive for as long as legally possible.
A direct, off-market approach changes the structure, not just the emotional tenor, of the negotiation. With no agent instructed for that specific conversation, the section 21 duty to disclose competing offers does not apply, and the two parties are free to agree commitments, an exclusivity period, a conditional contract, an option, that would be extremely difficult to sustain inside a live, multi-bidder portal listing.
The fee and friction economics of a marketed sale
UK sole-agency fees typically sit around 1.2 to 1.8 percent including VAT of the sale price. Multi-agency arrangements, where more than one agent competes to sell the same property, usually cost more, commonly 3 to 3.6 percent including VAT. That fee is a real, structural cost built into a marketed sale's economics, ultimately funded from the sale proceeds.
A seller who sells directly to a buyer does not need to fund that percentage through an agent. That does not mean a direct seller automatically passes on a matching discount, there is no reliable published figure for what off-market deals save a buyer, and claims of a fixed percentage should be treated with caution. What it does mean is that a direct seller has room a marketed seller structurally lacks: room to trade against speed of completion, certainty of sale, or a deal structure that fits their situation, rather than needing to chase the single highest headline number to net an equivalent outcome after agency fees.
Why direct deals open the door to structures a live, multi-bidder process can't accommodate
A property being marketed to several prospective buyers at once, each unaware of what the others are offering, is structurally incompatible with tools that require one buyer to be given real exclusivity, or a seller to accept a binding condition ahead of a full cash exchange. Four structures in particular come up repeatedly in direct, off-market negotiations.
- Option agreements give a buyer, often a developer, the right but not the obligation to purchase at an agreed price or formula within a set period, useful where planning risk needs to be worked through before capital is committed. See our full breakdown of option agreements explained.
- Subject-to-planning conditional contracts bind both parties to complete once a defined planning outcome is achieved, letting a seller lock in a materially higher, planning-uplifted price in exchange for accepting delay and risk. Read how subject-to-planning deals work in practice.
- Exclusivity, or lock-out, agreements are a seller's fixed-term promise not to negotiate with anyone else while a buyer completes due diligence, a tool the courts have upheld as enforceable only when the period is genuinely fixed. See exclusivity and lock-out agreements.
- Delayed-completion and low-deposit structures let a buyer exchange on a binding basis with a reduced deposit, with completion pushed out months to arrange finance, planning consents, or refurbishment, while the price is already locked in. See delayed completion and low deposit deals, which also covers back-to-back transactions.
None of these four structures is legally barred from a marketed, agent-run sale. What makes them rare there is structural rather than legal: a seller and agent juggling several live bidders have little practical room to grant any one of them the exclusivity or binding commitment each of these tools depends on.
Why motivated sellers are often more receptive to these structures
Sellers dealing with probate, divorce, financial pressure, or a fast relocation are, industry commentary suggests, often more focused on certainty and speed of resolution than on extracting the very last percentage point of sale price. For this kind of seller, a direct approach offering a clear structure, a fair conditional price, a firm exclusivity period, or a workable completion timetable can be a materially better fit than entering a marketed process built around open-ended competition and uncertainty.
This is not a universal rule, and every seller's circumstances differ. But it helps explain why direct, off-market approaches so often find their most receptive audience among sellers under some form of pressure or timeline constraint, rather than among sellers simply testing the market for the highest achievable price.
In practice: three GalimAI deals built on structure, not bidding
Wembley, Brent. A site that had already been refused planning permission for flats was exactly the kind of opportunity a marketed process tends to filter out early. GalimAI identified the owner directly. An option agreement, with a 5 percent non-refundable option fee against a 1.2 million pound completion value over an 18-month period, gave the buyer time to pursue planning without committing to a full purchase upfront. Planning was subsequently secured for nine houses. Full detail in the Wembley development site case study.
Chelmsford, Essex. A direct letter to the owner of a plot on Creekview Road led to a conditional purchase, subject to planning permission, at 330,000 pounds, with the buyer's financial exposure limited to planning costs of around 85,000 pounds rather than the full purchase price. Planning was secured and the site is projected to sell for 900,000 pounds, a projected return of more than 485,000 pounds on a fraction of the capital a straight purchase would have required. See the Chelmsford land deal case study.
Corringham, Stanford-le-Hope. A mixed-use property let to a national bookmaker was sourced by approaching the vendor directly, resulting in a 5 percent exchange deposit and a five-month completion period, well outside what a standard marketed timetable typically produces, alongside identified development potential above the existing units. Read the Corringham mixed-use case study.
None of these deals happened because a bidding war pushed a price up. Each happened because a direct conversation created room for a structure that a live, multi-bidder process could not have accommodated.
Where to go next
Each of the structures introduced above has its own mechanics, legal grounding, and worked examples. For the full picture, read the dedicated guides:
- Option agreements explained: control a site without buying it outright
- Subject-to-planning property deals: how conditional contracts work
- Exclusivity and lock-out agreements: securing time without a full commitment
- Delayed completion and low deposit deals, including back-to-back transactions
- Off-market vs Rightmove and Zoopla: why negotiation position differs
For the sourcing side of this picture, see the UK property sourcer's playbook and how to find off-market property in the UK.
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Is it illegal for an estate agent to keep taking offers after accepting one?
No. Under section 21 of the Estate Agents Act 1979, an instructed agent has a duty to pass on every offer received right up to exchange of contracts, unless the seller has given written instructions otherwise. This is a core reason marketed sales stay open to competing bids until exchange.
Does going direct to a vendor guarantee a lower price?
No, and no reliable published figure supports a fixed discount. What direct negotiation removes is the structural pressure toward maximum-competition bidding, which creates room to negotiate on price, speed, or deal structure rather than a guaranteed reduction.
Can a seller still change their mind before exchange in a marketed sale?
Yes. Offers made subject to contract are not legally binding in England and Wales at any point before formal exchange of contracts, which is why a marketed sale can be gazumped even after a price has been verbally agreed.