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Let’s find a buy to
let
mortgage

Our easy-to-use buy to let mortgage calculator allows you to search and compare the best BTL mortgage deals. Use it to find a mortgage interest rate for a new or existing property, and check how much your monthly repayments could be. 

What is a fixed rate buy to let mortgage?

A fixed rate buy to let mortgage locks your interest rate for a set period—typically 2, 3, or 5 years—so your monthly payments stay the same.

This provides certainty and stability, which is why many landlords choose fixed rates when planning their investments.

How are buy to let mortgages calculated?

While every mortgage lender will have their own criteria for determining how much you can borrow, they all look at the following key factors when calculating a buy to let mortgage: 

Loan to Value (LTV) 

This is how much you are borrowing expressed as a percentage of the property value. Generally speaking, a lower LTV gives you access to more competitive mortgage interest rates and a higher LTV reduces the number of lenders available to you and usually increases the rates. 

The majority of buy to let lenders cap their maximum loan amount to 75%. This means that even if you meet affordability criteria to borrow more, the most amount of funding you could access will still be up to 75% of the property value. 

Rental Income 

Buy to let properties should be self-funding and your mortgage product should be affordable for your current circumstances. As such, the rental income should cover the mortgage interest repayments plus any additional costs associated with running the property. 

When lenders are stress-testing your affordability, they will typically use a ICR of 145% at payrate (the mortgage rate) for individual borrowers and 125% for Limited Companies.

How to compare BTL mortgage offers

There are three main things to consider when comparing BTL mortgages, and the headline interest rate isn’t one of them!

Criteria – lender criteria vary enormously, so while you might be a textbook applicant for one, another wouldn’t even consider you! That’s why it’s best to start with the buy to let lenders that will consider you before you even think about mortgage interest rates.

Cost – the true cost of the mortgage is more important than the interest rate. While one product may have the lowest interest rate, it might have higher arrangement fees or additional fees that make it more expensive than a product with a slightly higher interest rate. Our bespoke buy to let mortgage sourcing system makes it easy for us to compare these costs for you.

Hidden fees – although less common now, some BTL mortgages have quirky additional terms, such as exit charges beyond the initial fixed-rate period. Our specialist mortgage experts will explain everything clearly and ensure you understand their recommendations before proceeding. Still, you and your solicitor must read over all the mortgage documentation before signing the mortgage offer. 

Frequently asked buy to let questions…

Do I need planning consent?

You’ll find it easier to secure property funding with planning permission already granted. Your lender will want to see all the related documentation as part of the application.

Lenders may make an exception about planning consent if you have development experience and have completed several successful projects. However, they will need proof that you’ve applied for planning permission at the point of application.

How long are development finance terms?

The terms for property development finance terms are usually 12 to 24 months, but will depend on the size and scope of the project. 

We work with many property development lenders and financial institutions. This helps us find the best match for the project.

What are the interest rates for development finance?

While there are no real guidelines for development finance interest rates, a good benchmark starts from around 7.5%. 

Development applications are assessed on a case-by-case basis and are priced according to the strength of the development proposition and you, the borrower. 

Our experts have access to the whole development finance lender market and will negotiate the best rate with the most suitable lender for your project.

Additional fees for property development finance

There are several costs and professional fees to consider when applying for property development finance; however, unlike off-the-shelf products, actual fees applied and fee scales are not set in stone but are likely to include some or all of those listed below.

Arrangement fees

Also referred to as a facility fee, lenders charge these fees for arranging the loan, typically priced at 1-2% of the loan amount.

Exit fees

The fee payable to the lender to close the loan facility. Some lenders do not charge exit fees at all, but many do.

Some lenders charge an exit fee as a percentage of the loan amount. Others (and these are the fees you must look out for) base the fee on a percentage of the gross development amount. This can make a considerable difference to what you repay, so don’t be fooled into taking what looks like a more competitive rate without doing the sums first.

Currently, exit fees on development finance cost in the region of 1-2%.

For example:

A developer owns outright land worth £500,000. They then borrow £800,000 to build four detached houses, and at the end of the project, the Gross Development Value is £1.8 million. 

- 2% exit fee based on the loan amount: £16k

- 2% exit fee based on GDV: £36k

This shows the importance of understanding the entire deal. Contact one of our brokers if you have any questions.

Valuation fees

As part of the application and risk assessment process, lenders will instruct a surveyor to place a detailed valuation on the development. The scale of these fees will depend on the size of the project.

If the project is extensive, you may also have to pay a monitoring surveyor or architect to confirm that the project has attained a certain standard as the build progresses.

Lenders often use this system to control the way they draw down funds.

Broker fees

These are the fees brokers charge for finding a suitable lender, negotiating a price and getting you a suitable, formal loan offer. All brokers charge differently.

At MFB, we typically charge between 0.75% and 1% of the loan amount, depending on your case’s complexity. We usually only charge fees if we successfully get you a formal loan offer.

We may also charge an administration fee, but we will always tell you exactly what you can expect to pay upfront. We accept payments by debit and credit cards.

Interest

The monthly interest payments on the loan will depend upon the rate you are offered and be based on the amount of funds released. The monthly interest payments will increase as the development progresses and more funds are released.

In most cases, the interest is “rolled up”, which means that instead of paying it monthly, it is added to the outstanding principal amount – hence the term “rolled up”. Interest will then accrue on the total amount outstanding, and whilst the loan size increases, it does ease the pressure and cash flow on the borrower during the build.

Professional costs

In addition to paying surveyor valuation fees, you will likely have to use the services of other professionals during the project, including architects, quantity surveyors, solicitors and project managers. Often, these fees can be included in the loan.

Contingency fund

Most developers set aside a contingency fund - usually around 10% - to pay for unexpected costs.

Talk to an expert

Have all the facts and figures you need to purchase or remortgage your property? Our experts will make the whole process easier for you! Give us a call or choose a convenient time for us to call you. Drop us an email or chat with a human on our live chat.

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