How Long Does Exchange of Contracts Take?

You've accepted an offer on your property. The estate agent sends the memorandum of sale, solicitors are instructed, and then … you wait. For weeks. Sometimes months. The period between agreeing a sale and exchanging contracts is the most uncertain and frustrating part of selling a home in England and Wales.

Exchange of contracts is the moment the sale becomes legally binding. Until exchange happens, either party can walk away without penalty. According to Propertymark, around 30% of agreed property sales fall through before exchange, making speed to exchange one of the most important factors in a successful sale.

This guide explains exactly how long the journey to exchange typically takes, what determines whether you reach exchange in 6 weeks or 20, and what you can do as a seller to compress the timeline.

How long does exchange of contracts take on average?

The average time from accepted offer to exchange of contracts in England and Wales is 8 to 16 weeks. According to data from HM Land Registry and industry surveys by the HomeOwners Alliance, the typical transaction takes around 12 weeks to reach exchange, with completion following 1 to 2 weeks later.

However, that average conceals enormous variation. The table below sets out realistic timescales for common scenarios.

The single biggest variable is whether the seller has prepared their legal paperwork in advance. A seller who has completed their property information forms and ordered searches before listing can shave 4 to 6 weeks off the timeline compared with a seller who starts from scratch after accepting an offer.

What happens between accepting an offer and exchanging contracts?

The period between offer acceptance and exchange is when the bulk of conveyancing work takes place. Here is the step-by-step process that must be completed before exchange can happen.

1. Memorandum of sale and instructing solicitors

Within a day or two of the offer being accepted, the estate agent sends a memorandum of sale to both parties and their solicitors. Each side formally instructs their solicitor, who carries out identity checks under anti-money laundering regulations (Proceeds of Crime Act 2002) and opens the file. This stage takes a few days if you have already chosen a solicitor, or up to a week if you need to find one.

If you want to avoid this delay, instruct a solicitor before you even list your property. See our conveyancing checklist for sellers for a complete breakdown of what to prepare in advance.

2. Preparing the draft contract pack

Your solicitor assembles the draft contract pack, which includes the draft contract itself, your title register and title plan from HM Land Registry, the completed TA6 Property Information Form, the TA10 Fittings and Contents Form, and the TA7 Leasehold Information Form if applicable. This pack is then sent to the buyer's solicitor for review.

If you have already completed your forms before finding a buyer, your solicitor can send the pack within days of the offer being accepted. If you have not, this stage alone can take 2 to 3 weeks as you work through the paperwork for the first time.

3. Property searches

The buyer's solicitor orders property searches from the local authority and other providers. The standard package includes a local authority search, drainage and water search, environmental search, and chancel repair liability search. The local authority search is almost always the slowest, taking anywhere from 2 to 8 weeks depending on the council. According to the Law Society, some councils routinely take 6 weeks or longer.

This is the single biggest bottleneck on the road to exchange. As a seller, you can eliminate it entirely by ordering an upfront search pack before you list. Search results are typically valid for 6 months, and most buyer's solicitors will accept seller-ordered searches from regulated providers.

4. Conveyancing enquiries

Once the buyer's solicitor has reviewed the contract pack and received search results, they raise conveyancing enquiries — written questions about anything that needs clarification. Common subjects include building work done without clear building regulations sign-off, boundary discrepancies, missing guarantees, planning permission queries, and issues flagged by searches.

Enquiries often involve multiple rounds of questions and answers between the two solicitors. Each round can take a week or more if anyone in the chain is slow to respond. This stage is where many transactions stall, and it is one of the areas where seller preparation has the biggest impact. Thorough, accurate answers on your TA6 form reduce the number of enquiries the buyer's solicitor needs to raise.

5. Mortgage offer

If the buyer is purchasing with a mortgage (which applies to the majority of transactions), their lender will arrange a valuation survey and, if satisfactory, issue a formal mortgage offer. This process typically takes 2 to 4 weeks from application, though it can be longer for non-standard properties or if the lender requests additional information. Exchange cannot happen until the mortgage offer is in place.

6. Chain alignment

If there is a property chain, every link in that chain must be ready before any of them can exchange. This means that even if your own conveyancing is complete, you may be waiting for someone else in the chain — a buyer further up the chain who has not yet received their mortgage offer, or a seller at the bottom who is still resolving enquiries. The longest chain member sets the pace for everyone.

7. Agreeing a completion date and exchanging

Once all enquiries are resolved, searches are clear, the mortgage offer is in place, and every party in the chain is ready, the solicitors agree a completion date. Contracts are then exchanged by telephone using one of the Law Society formulas (usually Formula B or C). The buyer pays the deposit — typically 10% of the purchase price — and the sale becomes legally binding.

To understand what happens after this point, see our guide on what happens between exchange and completion.

What affects how long exchange takes?

Several factors determine whether you reach exchange in 6 weeks or 20. Understanding them helps you target the areas you can actually influence.

Local authority search speed

Local authority search turnaround times vary dramatically from council to council. Some return results within 5 working days; others take 6 to 8 weeks. The Law Society publishes monitoring data on search times, and there is no way to expedite a council that is running slowly. The only way to remove this bottleneck entirely is to order searches before you find a buyer.

Seller preparation

The most impactful factor within a seller's control is how much preparation they do before accepting an offer. Sellers who complete the TA6 and TA10 forms, order searches, and assemble certificates for building work before listing can have the contract pack with the buyer's solicitor on day one. This removes weeks of dead time at the start of the process.

Conveyancing enquiry volume

The number of enquiries raised — and how many rounds of follow-up questions are needed — directly affects the timeline. Vague or incomplete answers on the TA6 form are the single biggest cause of excessive enquiries. Missing building regulations certificates, unclear boundary descriptions, and undisclosed alterations all generate additional questions that take time to resolve.

Chain length and complexity

Every additional link in a property chain adds complexity and risk. In a chain, the slowest participant sets the pace for everyone. A chain of four properties means four separate conveyancing processes, four mortgage applications, and four sets of enquiries that all need to complete before anyone can exchange. Research by the HomeOwners Alliance suggests that transactions in chains of four or more properties take an average of 4 to 8 weeks longer than chain-free sales.

Mortgage timescales

The buyer's mortgage application and valuation run in parallel with other conveyancing work, but if the lender is slow to issue a formal offer it can hold up exchange. Non-standard properties (such as those with unusual construction, short leases, or environmental risks flagged in searches) may require additional underwriting, which adds further time. Cash buyers eliminate this variable entirely.

Solicitor responsiveness

The speed at which both solicitors handle correspondence, forward enquiries, and chase outstanding items has a material impact on the timeline. A solicitor handling too many cases at once, or one who does not prioritise your file, can add weeks of unnecessary delay. Choosing a solicitor with the Law Society's Conveyancing Quality Scheme (CQS) accreditation and asking about their current caseload before instructing can help avoid this problem.

How to speed up exchange of contracts as a seller

While you cannot control every factor, there are concrete steps you can take to compress the time to exchange. These are ordered by impact.

Prepare your legal paperwork before listing

Complete your TA6 Property Information Form and TA10 Fittings and Contents Form before your property goes on the market. This means your solicitor can assemble the draft contract pack immediately when an offer is accepted, rather than waiting 2 to 3 weeks for you to fill in forms. Pine guides sellers through these forms in plain English so nothing is left vague for the buyer's solicitor to query.

Order searches upfront

Ordering a property search pack before listing eliminates the biggest single bottleneck. The results are typically valid for 6 months and can be passed directly to the buyer's solicitor. This can remove 2 to 8 weeks from the timeline, depending on your local council's turnaround speed.

Gather certificates and documentation

Collect building regulations completion certificates, planning permission approvals, electrical safety certificates, FENSA certificates for replacement windows, gas safety records, and any guarantees for work carried out on the property. Missing certificates are one of the most common causes of protracted enquiries. If a certificate is missing, your solicitor can arrange indemnity insurance (typically costing £20 to £100) as an alternative.

Instruct your solicitor early

Do not wait until you have accepted an offer. Instructing a solicitor when you decide to sell gives them time to obtain your title documents, review them for potential issues, and prepare the draft contract. Most solicitors do not charge extra for being instructed early. For a full walkthrough, see our guide to conveyancing timelines.

Respond to enquiries immediately

When your solicitor forwards the buyer's enquiries, treat them as urgent. Every day you delay adds a day to the overall timeline. Provide detailed, specific answers with supporting evidence where possible. If you are unsure about a question, call your solicitor to discuss it rather than leaving it unanswered.

Chase weekly and stay engaged

Set a weekly check-in with your solicitor. Ask what is outstanding, who you are waiting on, and whether there is anything you can do to help. If you are in a chain, ask your estate agent for regular updates on the other parties' progress. Proactive sellers who stay engaged throughout the process consistently reach exchange faster than those who take a passive approach.

Can you exchange and complete on the same day?

Yes. Simultaneous exchange and completion is possible and is sometimes used in chain-free transactions, auction purchases, and new build sales. In a simultaneous exchange and completion, both events happen on the same day, meaning there is no gap between becoming legally committed and handing over the keys.

However, it carries additional risks. If something goes wrong on the day — a delayed bank transfer, a last-minute issue with documents — there is no fallback position because you have not yet exchanged. Most solicitors advise against it unless the circumstances specifically warrant it and both parties understand the risks.

What happens if exchange is delayed?

Delays to exchange are common and can have several consequences:

• Increased fall-through risk: The longer the period before exchange, the more likely one party is to have a change of circumstances — job loss, finding a different property, or simply losing patience. Every additional week before exchange increases this risk.
• Mortgage offer expiry: Mortgage offers typically last 3 to 6 months. If exchange is delayed beyond this window, the buyer may need to reapply, which can add further weeks and may result in different terms or a declined application if their circumstances have changed.
• Search expiry: Property searches are generally valid for 6 months. If exchange takes longer than this, new searches may need to be ordered at additional cost and with further delay.
• Chain collapse: In a property chain, a delay at any point can cause the entire chain to collapse. If one buyer or seller withdraws due to frustration with delays, it can bring down every other transaction in the chain.
• Additional costs: Extended timescales can result in additional solicitor fees if the work involved significantly exceeds what was quoted, though most conveyancers include a reasonable timeframe in their fixed-fee quotes.

Average time to exchange by property type

The type of property you are selling has a significant impact on how long it takes to reach exchange. Leasehold properties, probate sales, and new builds all follow different timelines.

The risk of gazumping before exchange

Because neither party is legally committed until exchange, the period before exchange carries the risk of gazumping —where the seller accepts a higher offer from a different buyer after already agreeing a sale. While gazumping is not illegal in England and Wales, it is widely considered poor practice and can leave the original buyer out of pocket for survey and legal fees already incurred.

From the seller's perspective, the best protection against your buyer pulling out (the reverse scenario, sometimes called gazundering) is to reach exchange as quickly as possible. The shorter the pre-exchange period, the less opportunity there is for either party to reconsider.

How Pine helps sellers reach exchange faster

Pine is built around a simple principle: do the slow legal preparation before you find a buyer, not after. That means completing your property information forms in plain English, ordering your property searches upfront, and assembling a solicitor-ready legal pack — all before you list.

When an offer comes in, your solicitor can send the complete contract pack to the buyer's solicitor on day one, with searches already done and forms already completed. Instead of the typical 8 to 16 weeks to exchange, prepared sellers using Pine can realistically reach exchange in 4 to 6 weeks —cutting the period of uncertainty in half and significantly reducing the risk that the sale falls through.

Sources and further reading

• HM Land Registry — Transaction data and title document services (gov.uk/government/organisations/land-registry)
• The Law Society — Conveyancing Quality Scheme, local authority search monitoring, and TA form standards (lawsociety.org.uk)
• Solicitors Regulation Authority (SRA) — Solicitor conduct, complaints, and service standards (sra.org.uk)
• Propertymark — Research on fall-through rates and market data (propertymark.co.uk)
• HomeOwners Alliance — Consumer research on conveyancing delays and timelines (hoa.org.uk)
• Council for Licensed Conveyancers (CLC) — Licensed conveyancer regulation and register (clc.gov.uk)
• Gov.uk — Guidance on buying and selling property in England and Wales (gov.uk)

Related guides

• Average Time from Offer to Exchange in the UK
• How Long Does Conveyancing Take with No Chain?
• Is Conveyancing Faster with Cash Buyers?
• How Long Does Probate Take Before You Can Sell?

Frequently asked questions