Buy to Let Mortgages in Southwark
Most mainstream lenders will work, but the stress test still decides it. Whole-of-market buy to let advice for Southwark landlords — personal name, limited company, portfolio and HMO lending.
4.0%
Average gross yield
£580k
Typical entry price
90+
Lenders compared
What type of mortgage do you need?
Select the option that best describes your property financing requirement. Our brokers specialise in complex London and international structures.
"Our goal is to understand your unique situation. Select a category and we'll match you with the right product and lender."
— Roger Cooper, Senior Mortgage Adviser
What actually decides a Southwark buy to let application
Yields here usually clear the interest cover ratio on a 75% loan, though not always at higher-rate tax. The deciding factors tend to be the product’s stress rate and whether you hold personally or through a limited company.
How we approach it
- →Comparing the 125% basic-rate and 145% higher-rate cover tests against your actual position
- →Five-year fixes, where the lower stress rate can materially increase borrowing
- →Whether a limited company structure improves both the tax position and the cover test
- →Product fees weighed against rate — a fee-free product is not automatically cheaper
Southwark's housing market in 2026
The average property in Southwark sold for £661,019 over the past year, down 4% on the year before and 4% below the borough's 2023 peak of £688,329. Flats remained the dominant sale type at £574,953 on average, while terraced houses near Borough and Bermondsey averaged £952,330 and semi-detached homes reached £1,033,372.
The relatively tight gap between Southwark's flat and house prices compared with boroughs like Kensington & Chelsea means life cover needs here are more consistent across the borough, which is useful to know when budgeting premiums alongside a Bermondsey or Elephant & Castle mortgage.
Source: Source: HM Land Registry price-paid data, via Rightmove House Prices, period to 27 February 2026 (last updated 9 April 2026).
Landlord areas we cover in Southwark
What our clients say
Excellent service from start to finish! Roger was knowledgeable, patient, and always available to answer my questions. He made the mortgage process smooth and stress-free — I highly recommend!
Excellent service all round. My property is not a straightforward one when it comes to having a mortgage, but Roger goes above and beyond, supporting me all the way and removing the stress.
Outstanding service, always looking for the best product for you, always there to guide you through the process. Would thoroughly recommend Mortgage International, and Roger's diligence ensures a smooth transaction.
Buy to let in Southwark: common questions
What rental yield can I expect in Southwark?
Average gross yield across Southwark is around 4.0%, with entry prices from about £580k. Yields vary meaningfully within the borough — Borough and Bermondsey will not price the same way. Gross yield ignores voids, management, maintenance and finance costs, so treat it as a starting comparison rather than a return.
How much deposit do I need for a buy to let in Southwark?
Most buy to let lenders want at least 25%. On Southwark's £580k entry price that is roughly £145,000, plus stamp duty at the higher additional-property rates and purchase costs. Some lenders go to 80% loan-to-value, though rates are higher and the rental cover test becomes harder to satisfy.
Should I buy through a limited company in Southwark?
It depends on your tax position rather than the borough. Higher-rate taxpayers often find a limited company more efficient, because mortgage interest is a deductible business expense rather than attracting the restricted relief that applies to personally-held property. Company products usually carry higher rates and fees, so the comparison has to be run on your actual numbers. We are not tax advisers — we will model the mortgage side and recommend you take accountancy advice on the rest.
Will the rent cover the mortgage in Southwark?
Yields here usually clear the interest cover ratio on a 75% loan, though not always at higher-rate tax. The deciding factors tend to be the product’s stress rate and whether you hold personally or through a limited company.
Related services
Buy to let advice for Southwark landlords
Whole of market, FCA regulated, no upfront fees. We will tell you honestly whether the numbers work before you commit to anything.
Get a free initial consultation →Your property may be repossessed if you do not keep up repayments on your mortgage. Most buy to let mortgages are not regulated by the Financial Conduct Authority. The figures on this page are local averages shown for comparison and are not a quotation, projection or recommendation.