How to apply for a mortgage: easy mortgage application guide

Lifetise mortgage application guide - image by jan jakub nanista on unsplash

Hello and welcome to your guide on how to apply for a mortgage. Everything you need to know about the mortgage application process in one handy checklist.

Buying a home is exciting. We know what it takes to build up enough in savings to get to this point, so well done! You should be proud of getting this far.

Now we want to help make sure that you can get the mortgage you need. We know that the whole mortgage application process can feel a bit daunting. We’re here to help guide you and remove the stress. So you can feel confident and prepared when you apply for a mortgage.

In this article, we’ll cover:

  • How to clean up your finances before you make your mortgage application
  • What to expect from the mortgage application process
  • What you will need to provide to the bank

Mortgage application rules got tightened up after the financial crisis. So to give yourself the best possible chance of being accepted for a mortgage (or remortgage), follow the steps on this list.

When to start this process

Ideally, you would start this process at least 6 months before you make your application. But don’t panic if you don’t have that much time, just try to get as much done as possible in the time you have.

Stage 1: Cleaning up your finances

Your first task is to clean up your finances. When you make a mortgage application, the lender is going to carry out a detailed affordability assessment. They are working out whether you can afford to pay your mortgage. So they look at all your income and spending to check that you can cover the mortgage repayments easily.

Don’t worry, it’s not as scary as it sounds. We’ll make it as straightforward as possible for you.

You need to check your credit score (both of you if you’re buying together). When you make a mortgage application, the lender will run a credit check on you. If your credit score is too low, or you have issues in your credit report, you’ll probably be refused the mortgage.

There are 3 credit agencies in the UK (and all of them use a different method of scoring), so you need to check with all 3 of them. Here are their details, together with the score you should be aiming for:

Experian (free)

700 or higher

Equifax (free trial, but beware the subscription) or check it for free with Clearscore

660 or higher

Transunion/Callcredit (free) or via Noddle (free, but you have to download their app)

4 out of 5 or higher

Problems with your credit score? Check out our tips on how to improve your credit score to fix it.

You want to have the minimum amount of outstanding debt and other credit when you make your application. These tips will help you:


  • Don’t take out any new loans or credit cards in the 6 months before you apply for your mortgage. The mortgage lender will look at how much debt you have and any recent applications to increase your credit can raise a red flag for them.  


  • Get out of your overdraft. If you’re living permanently in your overdraft, that’s going to signal to a lender that you can’t afford your general living costs. And they’re unlikely to give you a mortgage.

  • Make sure all your regular payments are up-to-date. You need to make sure that all your payments (whether for credit card bills, mobile phone, utilities etc) are up-to-date and that you haven’t missed any payments. Missed payments will be flagged on your credit score and could harm your application.

  • If you can, pay off any credit card or loan balances. The more that you can minimise the amount of other debt that you have when you make your mortgage application, the better. This is particularly true if you are trying to get a mortgage at the top end of your scale.


  • Cancel any unused credit cards / lower your credit limit. Mortgage lenders look at not only how much outstanding debt you have, but how much credit you have available to spend if you chose to. So you need to check all the limits on your credit cards (and overdraft). Cancel any credit cards that you don’t use. If your credit limit has crept up over the years (banks often sneakily raise it for you), then ask your bank to reduce it down to the amount you actually need.


Your lender will be looking carefully at how much money you spend. So it’s a good idea to cut back on any non-essential spending in the 3 – 6 months before you make your application.

That means cancelling any monthly subscriptions (like gym membership) that you don’t use. Reining it in on buying clothes, or big nights out.

The look you’re aiming to project is of someone who can easily afford their mortgage payments, because you know how to control your spending.

Stage 2: Project stability

You want to make it as easy as possible for the bank to see you as a good candidate for the mortgage. Here are some tips:

You need to make sure that you are registered at your current address, so that it is easy to identify you. Here’s how to check if you are on the electoral register.

It’s not a good idea to change jobs when you’re applying for a mortgage. A lender wants to make sure that you are in a stable job, with a regular salary. You’ll need to provide payslips as part of your application.

The exception to this is if you are taking a new job with a higher salary that would allow you to get a bigger mortgage. In that situation, it’s usually best to wait until you’ve done at least 3 months in the new job (or at least past your probation period), before you put in your application.

A good mortgage broker can make the whole process much easier and save you money. They can advise you on:

  • How much you can realistically expect to borrow
  • Which mortgages are best for your individual situation
  • Which lenders tend to be fast / slow / more choosy about who they lend to
  • What documents you will need to provide as part of your application

We recommend Trussle. They are an online mortgage broker (but with actual people who will help you choose your mortgage and walk you through the application process). They have lovely customer service and get excellent reviews on Trustpilot – that’s why we picked them as our partner.

They don’t charge you for their services, but if you take out a mortgage through them, they get paid a fee by the lender (and we get a % of that fee – it’s how we pay for this site).

If you’d rather do it yourself – great! You can use one of the price comparison sites to check deals. We recommend looking at several sites, as they often have different offers available.

Stage 3 – your mortgage application

The 4-part application process

The mortgage application process has four key parts:

  • Assessment: where the lender looks at your application paperwork and supporting documents (see below). They will make an assessment about whether you meet their criteria for a mortgage and how much they are willing to lend you.
  • Valuation: they will send someone to look at the property that you are buying, to make sure it is worth the amount that you want to borrow.
  • Offer: all being well, they will make you a mortgage offer.
  • Completion: once you have exchanged contracts for the house purchase, the lender will transfer the mortgage amount so that you can pay the seller.

What you’ll need to provide as part of your application

Most lenders allow you to do your mortgage application online, by filling out a form. You then need to sign that form to confirm that the details are correct.

Do not be tempted to fudge any of the numbers, to make yourself look like you’re in a better financial position than you are!

Along with the mortgage application form, you’ll need to provide a lot of supporting information and documents. These are the proof of the numbers you put in your application (which is why you can’t embellish any of the numbers in your form).

When you apply for a mortgage, you normally have to provide:

  • Payslips (at least 3 months, some lenders ask for 6+)
  • utility bills
  • proof of benefits received
  • P60 form from your employer
  • passport or driving license (to prove your identity)
  • last 3 – 6 months’ bank statements of your current account (if you have multiple current accounts, they might ask to see all of them)
  • details of any loans, credit cards, other spending

If you’re self-employed, then it’s more complicated. We recommend speaking to your accountant 6 – 12 months before you apply for mortgage, so you can get your house in order):

  • statement of 2-3 years’ accounts from your accountant
  • tax return form SA302 if you have earnings from more than one source or are self-employed
  • bank statements that support the numbers in your SA302.

Scan all your documents and put them in a file

Make it easy for yourself, so you’re not stressing about the mortgage application timeline. Collect all your documents in advance, scan them in and save them in a mortgage application folder.

Got any questions or tips?

Please share your thoughts on this article, any questions you have or tips that you want to share with others going through this process. We’d love to hear from you! Please comment below or share this on social @lifetise.

Lifetise mortgage application guide - image by jan jakub nanista on unsplash
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