How to Buy a House in London: Step by Step

1. Establish Your Budget and Secure a Mortgage in Principle

Before viewing any house for sale in London, determine precisely what you can afford. Calculate your maximum borrowing by reviewing your income, existing debts and deposit size. Most lenders in the UK will offer between 4 and 5.5 times your gross annual income, though this varies by institution and your financial circumstances.

Approach mortgage lenders or an independent broker to obtain a mortgage in principle (also called a decision in principle or agreement in principle). This document confirms how much a lender is willing to lend you, subject to full underwriting and property valuation. Having this certificate ready demonstrates to estate agents and vendors that you are a serious, proceedable buyer—essential in competitive London markets where multiple offers are common.

Use our [mortgage calculator](/tools/mortgage-calculator) to model monthly repayments across different deposit sizes and interest rates. Remember to budget for the additional costs of buying: Stamp Duty Land Tax, solicitor fees, survey costs, removal expenses and any immediate renovation work. Our [Stamp Duty calculator](/tools/stamp-duty-calculator) will show your exact liability based on the purchase price and your buyer status.

Stamp Duty Land Tax rates are set by HMRC and vary depending on whether you are a first-time buyer, an additional-property purchaser, or a standard home-mover. As of the most recent published rates, first-time buyers receive relief on properties up to £425,000, while standard residential rates begin at 0% on the first £250,000. Always check the current thresholds on gov.uk, as these bands are subject to change in each fiscal year.

2. Instruct a Conveyancing Solicitor Early

Appoint a qualified conveyancing solicitor or licensed conveyancer as soon as you begin your search in earnest. Instructing a solicitor early—before you make an offer—means they can start preparatory work immediately once your offer is accepted, reducing delays later in the chain.

Your solicitor will conduct local authority searches, review the contract pack provided by the seller's solicitor, investigate title at HM Land Registry, raise enquiries about the property, arrange for funds to be transferred, and ultimately exchange and complete on your behalf. In London, where leasehold properties are prevalent, your solicitor will also scrutinise the lease terms, ground rent, service charges and the management company's financial health.

Choose a solicitor with recent experience in the London borough where you are buying. Local knowledge of council search turnaround times and area-specific issues—such as conservation areas, Article 4 directions or planned infrastructure projects—can prove invaluable. Request a full breakdown of their fees and disbursements in writing before instructing them.

3. Search for the Right Property and Arrange Viewings

Begin your search by defining your requirements: number of bedrooms, outside space, proximity to transport links, school catchment areas and neighbourhood character. London's diversity means that adjacent postcodes can offer vastly different environments and value propositions.

Browse houses for sale in London on property portals, register with estate agencies covering your target areas, and explore our own [properties for sale](/buy) to see current market availability. Once registered, you will receive new listings as they come to market—critical in fast-moving areas where desirable properties can go under offer within days.

Attend viewings prepared with questions about tenure, service charges (for leasehold), council tax band, any planned works, and the seller's position in any onward chain. Take photographs and notes to aid comparison, and revisit your shortlisted properties at different times of day or week to assess noise, parking availability and the neighbourhood's character. Our [areas guide](/areas) provides detailed insight into London's neighbourhoods to help you refine your search.

Pay close attention to sold house prices in the immediate vicinity. HM Land Registry publishes all completed sale prices, which you can access via the gov.uk Price Paid Data tool or commercial portals. This data helps you gauge whether the asking price is realistic and informs your offer strategy.

4. Make an Offer and Negotiate Terms

When you find a property you wish to purchase, submit your offer through the estate agent. In England and Wales, offers are not legally binding until contracts are exchanged, so both parties remain free to withdraw or renegotiate at any point before exchange.

Your offer should reflect the property's condition, recent comparable sales, your mortgage valuation and how long it has been on the market. In London's most competitive postcodes, sealed-bid scenarios and best-and-final-offer rounds are common. Being chain-free or having a mortgage in principle already arranged strengthens your position considerably.

Once your offer is accepted, the agent will issue a memorandum of sale to all parties and solicitors. This document confirms the agreed price, included fixtures and fittings, and the proposed completion date. At this point, instruct your solicitor formally if you have not already done so, and arrange a property survey.

5. Conduct Surveys and Instruct a Mortgage Valuation

Your mortgage lender will instruct a basic valuation to confirm the property is adequate security for the loan, but this report is for the lender's purposes and does not constitute advice to you about the property's condition.

We strongly recommend commissioning an independent survey. A RICS Home Survey Level 2 (formerly called a HomeBuyer Report) is suitable for most conventional properties, while a Level 3 Building Survey is advisable for older, unusual, or visibly deteriorating houses. London's housing stock includes substantial numbers of Victorian and Edwardian terraces, mansion blocks and conversions, many of which benefit from detailed structural inspection.

The surveyor's report may reveal defects—damp, subsidence, roof or electrical issues—that warrant renegotiating the price, requesting the seller remedy them before completion, or in serious cases, withdrawing from the purchase. Survey findings are one of the most common reasons for price reductions after an initial offer is accepted.

6. Exchange Contracts and Pay Your Deposit

Once all searches are complete, enquiries answered, the mortgage offer issued and the contract approved by your solicitor, you are ready to exchange contracts. At exchange, you and the seller enter into a legally binding agreement: neither party can withdraw without incurring significant financial penalties.

You will transfer your deposit—typically 10 per cent of the purchase price—to your solicitor, who will forward it to the seller's solicitor on exchange. Exchange and completion can occur on the same day, but more commonly completion follows a week or two later, allowing time to arrange removals and final fund transfers.

Your solicitor will agree an exact exchange and completion date with the seller's solicitor. These dates are then binding, and failure to complete on the agreed day can result in penalty interest or even contract termination.

7. Complete the Purchase and Collect the Keys

On the morning of completion day, your solicitor will transfer the balance of the purchase funds to the seller's solicitor. Once the seller's solicitor confirms receipt—usually by early afternoon—completion has occurred and you legally own the property. The estate agent will contact you to arrange key collection.

Your solicitor will then register your ownership with HM Land Registry, a process that typically takes several weeks but may extend to months during busy periods. You will receive an official title register and plan once registration is complete. Your solicitor will also pay Stamp Duty Land Tax to HMRC on your behalf, which must be done within 14 days of completion.

Arrange buildings insurance to commence from the moment of exchange (or earlier if specified in your contract), as you bear the risk of damage from that point even if you have not yet completed. Notify utility providers, the local council for council tax, and update your address with banks, HMRC and other institutions promptly after completion.