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Getting a mortgage in principle (MIP) is usually the first step when you’re thinking about buying a home.
It gives you an idea of how much you could borrow and shows sellers you’re serious. We’ll help you arrange yours properly and confidently with clear, fee-free advice built around your situation.
And we won’t disappear once it’s done. We’re here for everything that comes next.
- 100% fee-free advice.
- Always the right deal. Or we’ll pay you £500.
- 25 years of expert advice
- Real people. Real conversations.
- We handle the detail
New to mortgages? We'll explain everything in simple terms.
And the best part? Our advice is completely free today, tomorrow, and forever.
A mortgage in principle (sometimes called an agreement in principle (AIP), decision in principle (DIP) or offer in principle) is an indication from a lender of how much they may be willing to lend you.
It’s based on some initial information about:
- Your income
- Your regular outgoings
- Your credit history
- Your deposit
It isn’t a guaranteed mortgage offer but an indication on what you may be able to borrow. A full application and underwriting are still required.
It depends on the lender. Some carry out a soft credit check, while others may use a hard check. We’ll explain this clearly before proceeding.
Usually between 30 and 90 days, depending on the lender. If it expires, it can typically be refreshed.
A mortgage in principle is not a formal mortgage offer. It is subject to a full application, underwriting and lender criteria. The amount you could borrow may change depending on your circumstances.
Start your journey your way
Meet us in person at one of our branches or chat to us via video call — whatever works best for you. All appointments are with our friendly and experienced mortgage experts.
Find your local branch and pop in for a chat.
We’ll help you take the next step.
Our friendly team of advisors is ready to answer your questions right away.
Your Mortgage in Principle — Step by Step
Here's how we'll work with you to get you ready to buy.
We’ll ask about your income, deposit and financial commitments.
We use our expert knowledge to find the lender that suits your circumstances.
We explain how lenders are likely to assess your case and what you could borrow.
You’ll receive your agreement in principle, ready for when you start viewing properties. It's usually valid for 60-90 days before you'll need to get a new one.
We'll keep in touch throughout your property search, and your dedicated team of homebuying experts will be on hand to answer any questions you have.
And that's it - you're ready to start putting offers in on properties!
Why arrange your mortgage in principle with First Mortgage?
An agreement in principle is only an indication. But getting it right at the start can make everything else smoother.
We take the time to understand your income, commitments and plans before searching the market. Then we explain what lenders are likely to accept — so there are no surprises later.
You won’t just get a figure, you’ll understand what it means for you.
- 100% fee-free advice
- Access to a wide range of lenders
- Dedicated advisor from start to finish
- Support beyond this first step
Ready to take the first step?
An offer in principle gives you clarity at the beginning of your home-buying journey.
We’ll help you understand what you can borrow — and what’s right for you.
Wherever you are in the process, we’re here with you.