Guides
Conveyancing in London: How Long It Really Takes
By Seymont London ·
In London, the conveyancing timeline typically runs 12 to 16 weeks from offer acceptance to completion, though complex chains, leasehold properties, and local authority search delays can extend this to 20 weeks or more. Understanding each stage helps you plan your move, coordinate finances, and identify potential holdups before they derail your purchase. We see buyers underestimate how long buying a house takes, particularly when multiple parties are involved or when local searches reveal unexpected complications. This guide walks through the entire process, explains what happens at each milestone, and shows where London-specific factors—from borough search speeds to leasehold management companies—affect your schedule.
Instructing Your Conveyancer and Initial Checks (Week 1–2)
Once your offer on a house for sale is accepted, the first step is instructing a solicitor or licensed conveyancer. Most buyers in London choose a conveyancer immediately after agreeing terms, though you can arrange this earlier to save time. Your conveyancer will request proof of identity, proof of funds, and details of your mortgage offer or cash deposit, then open a file and notify the seller's solicitor that they're acting on your behalf.
Simultaneously, they'll order searches when buying a house—the local authority search, environmental search, water and drainage search, and (if relevant) chancel repair liability or coal mining checks. In London, local authority search speeds vary dramatically by borough: some return results within five working days, while others take four weeks or longer during peak periods. We always recommend asking your conveyancer which borough the property falls within and checking current processing times on the local council's website.
Your conveyancer will also carry out anti-money-laundering checks and review the initial contract pack sent by the seller's solicitor. This pack includes the draft contract, title documents from HM Land Registry, property information forms (TA6 and TA10 for leasehold), and any management pack if you're buying a flat. Reviewing these documents thoroughly during the first fortnight sets the tone for the entire conveyancing timeline.
If you're in a chain—meaning the seller is also buying and their purchase depends on yours—expect coordination delays at every stage. Chains are the single biggest variable in how long does buying a house take, and they're especially common in London where most sellers are moving rather than downsizing to rent or relocating abroad.
Searches, Enquiries and Mortgage Valuation (Week 3–8)
While searches are processed, your conveyancer will raise enquiries based on the contract pack and search results. Typical enquiries cover boundaries, alterations and planning permissions, disputes with neighbours, lease terms (for flats), service charge arrears, and any defects disclosed in the property information forms. The seller's solicitor typically takes one to three weeks to respond, though complex properties or unresponsive sellers can extend this considerably.
Local authority searches reveal planning decisions, building control approvals, road schemes, environmental health notices, and whether the property is in a conservation area or flood zone. In central London boroughs—Westminster, Camden, Islington, and others—these searches often flag listed building constraints, Article 4 directions removing permitted development rights, or historic enforcement notices that require further investigation. Any adverse entry may prompt additional enquiries or require an indemnity policy.
Your mortgage lender will instruct a surveyor to value the property, usually within a week of your mortgage application. The valuation itself takes a few days, but the report and formal mortgage offer can take two to four weeks depending on the lender's workload and whether the surveyor requests further information. We see many buyers arrange a more detailed RICS HomeBuyer Report or Building Survey at this stage; while not strictly part of the conveyancing timeline, survey findings often lead to renegotiation or additional enquiries that延 the process.
Leasehold properties add another layer: your conveyancer must obtain a management pack from the freeholder or managing agent, review the lease for onerous covenants or short remaining term, check service charge accounts, confirm buildings insurance, and ensure there are no planned major works. Management companies in London vary wildly in responsiveness—some reply within days, others take a month, and this is entirely outside your conveyancer's control.
Contract Review and Additional Enquiries (Week 9–11)
Once searches return and initial enquiries are answered, your conveyancer will provide a full report explaining any issues, the lease terms (if applicable), search results, and their professional assessment of risk. This is your opportunity to raise concerns, request further clarification, or ask the seller to remedy defects before exchange and completion.
Additional enquiries—often called "supplementary enquiries"—are common at this stage. If the seller has built an extension, your conveyancer will want to see building regulation certificates and planning permission; if these don't exist, you may need an indemnity policy to protect against enforcement action. If the local search reveals nearby developments, you might ask about construction noise or future road schemes. If the lease is short (below 80 years), you'll discuss extending it or adjusting the purchase price.
Your conveyancer will also prepare the contract report, transfer deed, and Stamp Duty Land Tax (SDLT) calculation. As of the current tax year, SDLT thresholds are set by HMRC and published on gov.uk; rates for residential property purchases in England differ from Scotland and Wales, and first-time buyer relief may apply if you meet the eligibility criteria. Always check the latest SDLT bands on gov.uk rather than relying on historical information, as rates and thresholds change with each Budget.
During this period, if you're selling a house simultaneously, your own sale will be progressing through the same stages. Chains move at the pace of the slowest link, so even if your purchase is ready to exchange, you may wait weeks for another party further up or down the chain to resolve their issues.
Pre-Exchange: Final Checks and Deposit Transfer (Week 12–14)
Once all enquiries are resolved, searches are satisfactory, your mortgage offer is in place, and you've approved the contract, you're ready to exchange. Before exchange, your conveyancer will conduct final pre-contract searches—a bankruptcy search against your name and an HM Land Registry search to ensure no new charges or restrictions have been registered against the property since the original title was supplied.
You'll need to transfer your deposit (typically 10 per cent of the purchase price) to your conveyancer's client account. This must clear before exchange, so allow three working days for a bank transfer to settle. If you're using a deposit guarantee or receiving a gifted deposit, your conveyancer will need a signed deed and source-of-funds declaration from the donor, which can add several days.
Your conveyancer will also prepare for completion by drafting the SDLT return, arranging for the balance of funds (your mortgage advance plus your remaining cash contribution) to be available on the completion date, and agreeing a completion date with all parties in the chain. In London, Friday completions are traditional but create bottlenecks; midweek completions often proceed more smoothly.
At this stage, we encourage buyers to obtain buildings insurance to start from exchange, as you assume the risk of damage to the property once contracts are exchanged, even though you don't yet own it. Your mortgage lender will require this anyway, but arranging it early avoids last-minute delays.
Exchange of Contracts and Completion Day (Week 14–16)
Exchange of contracts is the point at which the sale becomes legally binding. Your conveyancer and the seller's conveyancer will speak by telephone, confirm that both parties are ready, and formally exchange signed contracts. At this moment, you're committed to the purchase, the completion date is fixed, and if you withdraw you'll forfeit your deposit and may be liable for the seller's costs.
The period between exchange and completion is usually one to two weeks, though same-day exchange and completion is possible if all funds are in place and there's no chain. During this window, arrange your removal company, redirect post, and inform utility providers. If you're buying a leasehold flat, your conveyancer will notify the management company and request final meter readings and apportioned service charges.
On completion day, your conveyancer receives the mortgage funds from your lender, combines them with your remaining deposit and any additional cash, and transfers the full purchase price to the seller's solicitor by electronic transfer. Completion usually happens by early afternoon; once the seller's solicitor confirms receipt of funds, they authorise release of keys (held by the estate agent or seller) and you can collect them and move in.
After completion, your conveyancer will pay SDLT to HMRC (due within 14 days), submit the transfer deed and mortgage deed to HM Land Registry to register you as the new owner, and send you a completion statement showing all transactions. Land Registry registration in London currently takes several weeks—sometimes months during busy periods—but you own the property from completion day regardless of when the register is updated.
Factors That Delay the Conveyancing Timeline in London
Several London-specific factors commonly extend the conveyancing timeline beyond the 12-to-16-week average. Leasehold properties with absent or slow-responding freeholders can add four to six weeks, particularly if the managing agent is overseas or the lease requires formal consent for the sale. Short leases (below 80 years) trigger complex negotiations about lease extensions, often involving a surveyor's assessment of marriage value and protracted correspondence with the freeholder's solicitor.
Chains involving multiple parties are ubiquitous in the capital. It's not unusual for a chain to include five or six transactions, each dependent on the others, and a single delay anywhere cascades through the entire sequence. We've seen straightforward purchases stall for months because a buyer at the top of the chain awaits probate or a property at the bottom requires major remedial work identified during survey.
Local authority search delays vary by borough and season. Some outer London boroughs return searches within a week; others, particularly those with under-resourced planning departments, take six weeks or more. If the property is in a conservation area, near a listed building, or subject to a Tree Preservation Order, additional checks and correspondence with the council's planning department add further time.
New-build purchases involve additional layers: dealing with the developer's solicitor, reviewing complex lease terms and estate management schemes, arranging NHBC warranties, and coordinating practical completion with construction schedules. Auction house purchases, by contrast, compress the timeline dramatically—completion is typically 28 days from the auction date, with no opportunity for a survey or mortgage arrangement after bidding, so buyers must instruct conveyancers and secure finances in advance.
How to Speed Up Your Conveyancing Timeline
The single most effective way to accelerate the process is instructing your conveyancer before making an offer. Many buyers wait until their offer is accepted, losing a week or more. If you're serious about a house for sale London property, engage a conveyancer early, provide ID and proof of funds immediately, and ask them to prepare so they can request searches the moment you go under offer.
Respond to your conveyancer's requests immediately. Every query about source of funds, every contract report that sits unread in your inbox, every survey report you delay reviewing adds days or weeks. We recommend setting aside time each week to address conveyancing correspondence and keeping your conveyancer informed of any changes to your circumstances, mortgage offer, or moving plans.
If you're in a chain, maintain regular contact with your estate agent and conveyancer to understand where delays are occurring and whether any party needs assistance. Sometimes a simple phone call to clarify an ambiguous enquiry response or chase a management pack can save a fortnight. If the chain is fragile, consider whether you have flexibility on your completion date or whether you can help resolve bottlenecks—for example, by agreeing to a delayed completion if it keeps the chain intact.
Choose a conveyancer with demonstrable London experience, particularly if you're buying a leasehold flat in a mansion block or a period property in a conservation area. Local knowledge of borough quirks, common lease issues, and which management companies are slow to respond can make a material difference. Finally, avoid peak periods if possible: the spring market and pre-Christmas rush see conveyancers, surveyors, and Land Registry under greatest pressure, whereas January and August tend to be quieter.
Frequently asked
- How long does conveyancing take for a leasehold flat in London?
- Leasehold conveyancing in London typically takes 14 to 20 weeks, compared to 12 to 16 weeks for freehold houses. The additional time accounts for obtaining and reviewing the management pack, checking service charge accounts, verifying buildings insurance, and liaising with the freeholder or managing agent. If the lease is short (below 80 years) or the management company is slow to respond, expect further delays.
- Can I speed up the conveyancing timeline by paying more?
- Paying for expedited local authority searches can reduce search times from four weeks to five working days, saving up to three weeks overall. However, the majority of the conveyancing timeline is spent on enquiries, responses from third parties, mortgage processing, and chain coordination—none of which can be materially accelerated by additional fees. Instructing your conveyancer early and responding promptly to requests has more impact than premium services.
- What happens if my chain collapses after exchange of contracts?
- Once you've exchanged contracts, you're legally bound to complete. If another party in the chain withdraws after exchange, they forfeit their deposit and may be liable for damages, but this doesn't release you from your obligation. In practice, if completion cannot proceed on the agreed date due to a chain collapse, solicitors negotiate a new completion date or, in extreme cases, the aggrieved party may pursue breach-of-contract claims. This is why thorough due diligence before exchange is critical.
- How long after completion does it take to be registered at HM Land Registry?
- HM Land Registry registration in London currently ranges from 6 to 20 weeks depending on the complexity of the title and Land Registry's workload, though straightforward transfers sometimes complete faster. You legally own the property from completion day regardless of when registration completes, but you won't receive the official title deeds until registration is finalised. Your conveyancer will track the application and notify you once the register is updated.
- Do I need to pay Stamp Duty Land Tax before completion?
- SDLT is due within 14 days of completion, not before. Your conveyancer will calculate the amount during the pre-exchange stage, but payment is made after completion using funds you've provided. The conveyancer submits the SDLT return to HMRC, pays the tax on your behalf, and sends you the SDLT5 certificate. Without this certificate, HM Land Registry will not register your ownership, so timely payment is essential.
- Why do local authority searches take so long in some London boroughs?
- Search processing times depend on each borough's resources, staff levels, and the volume of applications. Boroughs with large planning departments and digital systems return searches quickly; those with paper-based records or understaffed teams can take six weeks or more. You can check current processing times on the local council's website or ask your conveyancer to use a personal search company, which physically inspects the records and often delivers results faster, though this may carry additional risk if the searcher misses an entry.