Get a mortgage in principle
Show sellers you’re a serious buyer who knows their budget
Check your mortgage affordability with over 45 mortgage lenders
Get your certificate in minutes with our simple online form

Your online mortgage in principle from L&C
Thinking about buying a home? A mortgage in principle shows you’re serious.
While it doesn't guarantee you a mortgage, your L&C online mortgage in principle helps you understand your budget, see what your repayments might be, and lets estate agents and sellers know you're a serious buyer who’s ready to go.
Get your online L&C mortgage in principle and see which deals you could qualify for.
What is a mortgage in principle?
An L&C online mortgage in principle uses our triple filter. This triple filter looks at:
- The lenders criteria
- How much they’re willing to lend
- The products available.
We’ll create a certificate confirming if you can afford the mortgage you want, as well as how much a lender is theoretically willing to lend you and a maximum property value.
It’s not a guarantee you’ll get a mortgage but it’s the first step in your mortgage journey.
Get a mortgage in principle
To get an L&C mortgage in principle you’ll need to provide some basic details about your finances, such as your income, outgoings and any debts.
Getting an L&C mortgage in principle doesn’t mean you have to apply for a mortgage. But if you want to know how much you could borrow, a mortgage in principle is the place to start.
Why check just one lender when we’ll look at 45?
A mortgage in principle directly from a bank will only ever show you what they would lend - whereas we check across the market. We take all the information you give us and use it to check affordability calculators from across the market, including all the high street banks and building societies. Then we carry out our triple filter product and criteria check to make sure you’re getting the right maximum borrowing amount.
We also don’t carry out a credit check, so you know it won’t negatively affect your credit report and/or credit history.
It doesn’t guarantee you’ll get a mortgage, but it will show you which mortgage deals you’re likely to qualify for and saves you time when you’re ready to apply for your mortgage.
We'll help you throughout the mortgage process – no hidden costs or surprises, just straightforward, honest, mortgage advice.
Because we have access to over 90 lenders, we’re confident of finding a deal that suits your circumstances.
That said, it’s important that you fill out the mortgage in principle honestly, as any problems will show up when the lenders do their eligibility checks. If you’re worried that you have an issue that could hold up the mortgage application, speak to an L&C adviser today.
L&C won’t conduct a credit check when you apply for our mortgage in principle, so it won’t affect your credit score at all.
Simply, a mortgage in principle just means you’ve got proof that lenders might be willing to lend you a certain amount to buy your home. It also shows sellers you’re serious and helps you budget before you start house hunting.
Whilst a mortgage in principle isn’t a mortgage offer, it’s the first step in the mortgage process.
The simplest answer is nothing. A mortgage in principle, agreement in principle and decision in principle are different names for the certificate that shows how much a lender might theoretically be willing to lend you.
Once you fill out our simple online form, we can email you your mortgage in principle certificate within 20 minutes. Sometimes it can take a little longer, but you’ll generally have a mortgage in principle certificate within a day of applying.
A mortgage in principle from a lender usually lasts between 30 and 90 days because it’s credit scored. Your L&C mortgage in principle isn’t credit scored, so it doesn’t have a use by date.
However, if your circumstances change, or the lender’s affordability criteria changes, then it’s best to revisit your mortgage in principle to make sure you’ve got the most up to date certificate.
That said, you should really be applying for a mortgage in principle before you’ve started looking for properties because it can help you understand your borrowing limits. If your circumstance have changed, you can apply for a new one.
There’s certain information we need to know to get you your mortgage in principle certificate. This includes:
- The sort of mortgage you’re looking for and your deposit
- Your personal details including name, date of birth and contact details of applicants
- Your income details such as salary and any bonuses
- Your outgoings and any debt
- Details about the new home you are looking for or planning to buy
Our online application doesn’t take long, but if you’re short of time you can create an account and pick up where you left off.
Last updated
December 11, 2025
Your next step now
Getting a mortgage in principle couldn’t be easier. Simply use our online Mortgage Finder and get your L&C decision in principle certificate today.
Ready to find your perfect deal?
At L&C, we’re there from the very start of your journey to guide you through each and every step.
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