Check Your Credit Report

Your credit report is one of the most important factors in a mortgage application. Lenders use it to assess how reliably you have managed debt in the past and to predict how likely you are to repay a mortgage. Before applying for a mortgage — or even an agreement in principle — check your credit report with all three main credit reference agencies: Experian, Equifax, and TransUnion. Look for any errors, outdated information, or negative entries that could affect your score. Errors can be corrected, but it takes time.

Improve Your Credit Score

If your credit score is lower than you would like, there are steps you can take to improve it before applying:

• Register on the electoral roll at your current address
• Pay all bills and existing credit commitments on time
• Reduce outstanding balances on credit cards and loans
• Avoid applying for new credit in the months before a mortgage application
• Close unused credit accounts (but be aware this can temporarily reduce your score)
• Ensure your address is consistent across all financial accounts

Understand How Much You Can Borrow

Mortgage lenders typically lend between four and four-and-a-half times your annual income, though this varies by lender and by individual circumstances. Use online mortgage calculators to get a rough idea of your borrowing capacity, but bear in mind that these are indicative only. A mortgage broker can give you a more accurate picture based on your specific income, outgoings, and financial history.

Save Your Deposit

The size of your deposit affects both the mortgage products available to you and the interest rate you will pay. A larger deposit means a lower loan-to-value (LTV) ratio, which typically means access to better rates. Most lenders require a minimum deposit of 5–10% of the purchase price, but a deposit of 15–20% or more will give you access to significantly better rates and a wider range of products. Be prepared to evidence where your deposit has come from — lenders will want to see bank statements showing the deposit building up over time.

Gather Your Documents

A mortgage application requires a significant amount of documentation. Gathering this in advance will speed up the process considerably. You will typically need:

• Proof of identity — passport or driving licence
• Proof of address — utility bills or bank statements from the last three months
• Proof of income — payslips for the last three months (employed) or two to three years of accounts or SA302 tax returns (self-employed)
• Bank statements for the last three to six months
• Details of any existing debts, loans, or credit commitments
• Evidence of your deposit

Obtain an Agreement in Principle

An agreement in principle (AIP) — also known as a decision in principle or mortgage in principle — is a conditional indication from a lender that they would be willing to lend you a specified amount, subject to a full application and valuation. An AIP is not a mortgage offer, but it demonstrates to sellers and agents that you have been assessed by a lender and are a credible buyer. Most estate agents will ask whether you have an AIP before arranging viewings.

Consider Using a Mortgage Broker

A mortgage broker can search the whole market (or a large part of it) to find the most suitable mortgage for your circumstances. They can advise on which lenders are most likely to accept your application, help you prepare your documentation, and manage the application process on your behalf. For buyers with complex income — such as the self-employed, contractors, or those with multiple income sources — a broker is particularly valuable.

Avoid Common Mistakes

Common mistakes that can derail a mortgage application include:

• Applying for new credit shortly before a mortgage application
• Making large unexplained deposits into your bank account
• Changing jobs shortly before applying
• Having undisclosed debts or financial commitments
• Providing inconsistent information on different parts of the application