How to Get a Mortgage Agreement in Principle?

To get a Mortgage Agreement in Principle, you will usually need to provide details about your income, employment, regular commitments and credit history so a lender can carry out an initial affordability check.

For first time buyers in Durham, arranging an Agreement in Principle before viewing properties can help establish a realistic budget and show that you have already taken steps towards securing a mortgage.

As a mortgage broker in Durham, we can typically arrange an Agreement in Principle within 24 hours of your initial mortgage appointment.

What Information Do You Need for an Agreement in Principle?

Lenders will usually ask about your income, employment status, existing borrowing and regular financial commitments before issuing an Agreement in Principle.

You may also need to provide details about your deposit and where it has come from, particularly if you are buying your first home in Durham.

If you are self-employed, the lender may ask for more information about how your income is structured.

The exact requirements can vary between lenders, which is why the information needed for one AIP may not be identical to another.

How Much Can an Agreement in Principle Tell You?

An Agreement in Principle gives you an indication of how much a lender may be prepared to lend based on the information provided at that stage.

It can help you set a realistic property budget before you start making offers, though the amount is not guaranteed.

A full mortgage application involves more detailed checks, including income verification, affordability and a valuation of the property.

For a first time buyer in Durham, this can be useful for narrowing the property search to homes within a sensible price range.

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Does an Agreement in Principle Guarantee a Mortgage?

No. An Agreement in Principle does not guarantee that your mortgage application will be accepted.

The lender will still need to complete a full assessment of your circumstances and check the property you are buying.

Changes to your income, employment or existing credit commitments can also affect the final decision.

An AIP should therefore be treated as an early indication rather than confirmation that a mortgage offer will follow.

Do You Need an Agreement in Principle Before Viewing Houses?

You do not always need an Agreement in Principle before viewing properties, though having one ready can make the process easier.

Estate agents may ask about your mortgage position when arranging viewings or discussing an offer.

Having an AIP can show that you have already looked at affordability and have a clearer idea of what you may be able to borrow.

For buyers searching for a home in Durham, arranging one early can help avoid getting too far into the property search without knowing your likely budget.

How Long Does a Mortgage Agreement in Principle Last?

An Agreement in Principle is usually valid for a limited period, commonly between 30 and 90 days depending on the lender.

If it expires before you find a property, it can normally be renewed or replaced. The lender may need to reassess your circumstances and could carry out another credit search.

If your finances change while you are looking for a home in Durham, it is worth reviewing your AIP before relying on it when making an offer.

Getting an Agreement in Principle Through a Mortgage Broker in Durham

Going directly to one lender will only show what that particular lender may be willing to offer.

A mortgage broker in Durham can compare affordability and lending criteria across a wider range of lenders before deciding where to arrange an Agreement in Principle.

This can be especially useful for first time buyers with self-employed income, overtime, commission, existing credit commitments or a gifted deposit, as lender criteria can vary considerably.

Date Last Edited: September 7, 2026