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How to Prepare for a Mortgage Application

Learn how to prepare for your mortgage application with essential tips on affordability, credit history, and deposit size.

By David Sampson
20 July 2026
3 min read
UK first time buyer mortgage article image for How to Prepare for a Mortgage Application

TL;DR

  • To improve your mortgage readiness, focus on your affordability, credit history, and deposit size.
  • these elements are critical for securing favourable mortgage terms.

Written by David Sampson for Mortgage118. Last updated 20 July 2026. Reviewed against our editorial standards. Editorial standards. Mortgage118 is a directory — not FCA-authorised and not a mortgage adviser.

Preparing for a mortgage application is essential for anyone looking to secure a home loan. Understanding the key factors that lenders consider can significantly enhance your chances of approval and help you secure better rates.

What factors do lenders consider for mortgage applications?

Lenders assess several key areas when evaluating a mortgage application. These include:

  • Affordability: Lenders will look at your income compared to your monthly expenses to determine how much you can afford to repay. They also conduct stress tests to see if you can manage payments if interest rates rise.
  • Employment & Financial Stability: A steady income from regular employment or consistent self-employment is important. Lenders prefer applicants with a stable financial background as it indicates a higher likelihood of meeting monthly payments.
  • Deposit: The size of your deposit directly impacts your eligibility for a mortgage and the interest rates available to you. A larger deposit typically results in better rates.
  • Credit History: Your credit report plays a significant role in the approval process. Lenders will review your payment history, overdraft usage, and any County Court Judgments (CCJs) or missed payments. A clean credit history is essential for securing a mortgage.

How can I improve my credit history?

Improving your credit history is vital for mortgage readiness. Here are some steps you can take:

  • Pay bills on time to avoid missed payments that could negatively impact your credit score.
  • Keep your credit utilisation low by not maxing out your credit cards.
  • Check your credit report regularly for errors and dispute any inaccuracies.
  • Avoid taking on new debt shortly before applying for a mortgage, as this can affect your credit score.

What does a Decision in Principle (DIP) mean for me?

A Decision in Principle (DIP), also known as an Agreement in Principle (AIP), is a preliminary assessment from a lender indicating how much they are willing to lend you based on your financial situation. Obtaining a DIP can be beneficial, as it gives you a clearer understanding of your budget when house hunting. Typically, a DIP is valid for a limited timeframe, providing a window within which you should complete your property search.

What this means for first-time buyers

For first-time buyers, being mortgage-ready is important in a competitive property market. Understanding your financial position and improving your credit score can help you secure a mortgage more quickly and efficiently. With lenders scrutinising applications more closely, having a solid deposit, stable income, and a good credit history can make a significant difference in your home-buying journey. Make sure to prepare these aspects well in advance to enhance your chances of approval.

Frequently asked questions

What is the minimum deposit required for a mortgage?

The minimum deposit required for a mortgage can vary depending on the lender and the type of mortgage.

How long does it take to get a mortgage approved?

The mortgage approval process can take anywhere from a few days to several weeks, depending on the lender’s requirements and the complexity of your application.

About David Sampson

David Sampson writes about the UK mortgage market for Mortgage118, covering specialist lending, market trends, and practical advice for borrowers. All content is reviewed for accuracy against FCA guidelines and current market data.

How to Prepare for a Mortgage Application | Mortgage118