Mortgage Agreement in Principle: What It Is and Why You Need One Before Viewing

You found a house to view in Medway, and the estate agent asks one question. Do you have a mortgage agreement in principle? Without one, many agents will not book your viewing or pass on your offer. A mortgage agreement in principle proves you can likely afford the home. This guide explains what it is, why you need it before viewing, and how to get one quickly. You will also see how Yomo books appointments, including Saturdays, so you can view with confidence.

What Is a Mortgage Agreement in Principle?

A mortgage agreement in principle is a written statement from a lender. It shows how much they may lend you, based on a quick look at your finances. It is also called a decision in principle, a mortgage in principle, or a mortgage promise. It is not a full mortgage offer.

The amount is an estimate, not a promise to lend. Your firm offer comes later, after a full application and a property valuation. Think of it as proof that you are ready and able to buy.

Do You Need an Agreement in Principle Before Viewing?

No, you do not legally need an agreement in principle to view a house. But most estate agents will ask for one before they book you in. In a busy market, sellers often ignore offers from buyers without one.

According to MoneyHelper, an AIP is not a legal requirement before making an offer. Yet buyers who have one hold a clear advantage over those who do not. It signals that you are serious and can fund the purchase.

Independent guides agree. The HomeOwners Alliance recommends getting one before you start house-hunting.

Why Estate Agents Ask for an AIP

Estate agents want to avoid wasting viewings on buyers who cannot proceed. An agreement in principle answers two questions for them straight away:

• You are serious about buying.

• You can probably borrow what the property costs.

Showing your AIP early can also speed up your viewings. It puts you ahead of buyers who still need to sort their finances.

How to Get a Mortgage Agreement in Principle

Getting an agreement in principle is quick and simple. Follow these five steps, and many buyers finish in under a day.

1. Gather your details. You need your income, regular outgoings, credit commitments, and three years of address history.

2. Choose your route. Apply directly with a lender, or ask a broker to find the right one for you.

3. Submit your information. The lender runs an initial check, usually a soft credit search.

4. Get your certificate. You receive your AIP, normally valid for 30 to 90 days.

5. Use it when viewing. Show it to agents, then make offers with confidence.

One tip many buyers miss: aim your AIP at the property value you want, not your maximum. The estate agent may see the figure, so a lower, realistic amount protects your negotiating position.

How Long Does an Agreement in Principle Last?

An agreement in principle usually lasts 30 to 90 days. If yours expires before you make an offer, you can renew it or apply again. Because rates and lender rules change often, get one when you are ready to view and offer.

Does an Agreement in Principle Affect Your Credit Score?

Usually not. Most lenders run a soft credit check for an agreement in principle. A soft check does not affect your credit score.

MoneyHelper confirms that some lenders run a hard credit check instead. A hard check leaves a mark and can lower your score for a short time. Several hard checks close together can do more damage.

This is where a broker helps. A good broker knows which lenders use soft checks, so you avoid needless marks on your file.

Agreement in Principle vs Mortgage Offer

These two terms cause a lot of confusion. An agreement in principle is an early estimate, and a mortgage offer is a firm commitment to lend.

Feature	Agreement in Principle	Mortgage Offer
What it is	An early indication of what you can borrow	A formal commitment to lend
When you get it	Before you view or make an offer	After a full application and valuation
Checks involved	Usually a soft credit check	Full credit check and property valuation
Is it binding?	No	Yes, subject to conditions
How long it lasts	Around 30 to 90 days	Usually around 6 months

Both matter. The AIP gets you viewing, and the mortgage offer lets you complete the purchase.

Get Your Agreement in Principle with Yomo in Medway and Kent

Yomo is a whole-of-market mortgage broker based in Rochester, serving buyers across Medway and Kent. We book real appointments, including Saturdays, so you can sort your AIP around work and family. We regularly help local buyers who almost lost a home because their finances were not ready.

Our advisers match you to the right lender, liaise with your estate agent, and guide you through to a full offer. We also search the whole market, so you are not limited to one bank's deal.

Already own a home? The same first step applies when you are remortgaging.

Remember, you are free to choose your own broker. You do not have to use the estate agent's in-house adviser, and you should never feel pressured to.

Whether you are a first-time buyer or self-employed, we can help you get viewing-ready.

Securing an agreement in principle is the quickest way to prove you are a serious buyer. Get it before you view, and you can offer the moment you find the right home.

Book your free consultation with Yomo today, and get your agreement in principle sorted before your next viewing. Saturday appointments are available, so you can move fast when the right home appears.

Or start your enquiry online, and we will be in touch.

Ready to view with confidence?

Please note: this article is for information only and is not financial advice. Your home may be repossessed if you do not keep up repayments on your mortgage.

As a firm, Yomo Finance Ltd is an Appointed Representative of The Right Mortgage Ltd. This company is authorised and regulated by the Financial Conduct Authority.