Owning one or two rental homes is one thing. Running a larger portfolio is another. The rules change. Lenders have more criteria and checks. So, getting the right mortgage becomes more complex.
If you want to find out what it means to be a portfolio landlord, how borrowing works as you grow, and what to keep in mind when managing loans across many homes, this guide will tell you everything you need to know. This information should only be used as general guidance, and it’s best to speak to a qualified adviser before committing to anything.
What is a portfolio landlord?
A portfolio landlord owns four or more mortgaged buy to let homes. This is the line set by the Prudential Regulation Authority (PRA).
In 2017, the PRA brought in new rules for this group. When a portfolio landlord applies for a mortgage, lenders must now check the whole portfolio. Not just the one property they’re borrowing against.
If you own three or fewer mortgaged homes, simpler rules apply. Cross four, and the lender checks become more detailed.
Read our guide on how buy to let works for more background.
How many properties does the average landlord own?
Most landlords own just a few homes. The English Private Landlord Survey 2024 (MHCLG) found:
- 45% of landlords owned just one home
- 38% owned between two and four
- 17% owned five or more
That last group is small. But they account for 49% of all tenancies in England. A few landlords own many rental homes.
The same survey found that the middle portfolio value was £450,000. Around one in five landlords had a portfolio worth £1 million or more.
How many properties can you own?
There is no legal cap. You can own as many buy to let homes as you like. But the more you own, the harder borrowing can get.
Each lender sets its own limits. Some won’t lend to landlords with a large number of loans already. Others will lend but apply tighter checks.
The bigger the portfolio, the more a lender cares about total debt, total rent, and how the whole thing holds up if rates rise.
How many portfolio landlords own HMOs?
HMOs (houses in multiple occupation) are popular with landlords who want higher yields. You let rooms to separate tenants. More tenants mean more rent from one property.
But HMOs need a specialist loan. A standard buy to let mortgage doesn’t work for a shared house. The lender checks income from all rooms and asks about the HMO licence.
Multi-unit freehold blocks (MUFBs) are another type. These are buildings with several self-contained flats under one title. Again, standard buy to let doesn’t cover them.
Portfolio landlords with HMOs or MUFBs often need specialist lenders who know how these work.
How can borrowing change depending on portfolio size?
The checks a lender does will grow with your portfolio. Here’s what changes at each stage:
- One to three homes. Most lenders check each home on its own. They look at whether the rent covers the loan cost, usually by 125% to 145%. They also check your income and credit.
- Four or more homes. You’re now a portfolio landlord. Every time you apply for a new loan or remortgage, the lender must check your whole portfolio. They look at total rent, total debt, and how the full picture holds up.
- Larger portfolios. High street lenders may step away. Specialist lenders are better placed to handle complex portfolios, including HMOs, commercial property, or company structures.
Lenders must also stress test your loans. They check that your portfolio still works if rates rise by around 2% above what you pay now.
Mortgage advice for portfolio landlords
Managing loans across many homes takes more planning. These five habits make a big difference:
1. Hire help
Once you own several homes, doing it all yourself is hard. A good agent can handle day-to-day tenant issues. A specialist accountant can manage your tax. Both costs are tax-deductible and can save you far more than they cost.
2. Implement systems and processes
Keep clear records for every home. Track rent, repairs, void weeks, and loan costs. When you apply for a mortgage, lenders ask for a portfolio schedule. Having one ready shows you run things in a clear, professional way.
3. Screen tenants
Good tenants save you money. Run full checks before you accept anyone. Look at their income, rental history, and right to rent. Empty weeks and missed rent are two of the biggest costs a landlord faces. Good vetting cuts both.
4. Know the law
Landlord rules have changed a lot in recent years. The Renters’ Rights Act, EPC rules, HMO licences, and deposit rules all carry fines if you get them wrong. Stay up to date. A trade body or letting agent can help you track changes.
5. Combine your mortgages
Some landlords hold all their loans with one lender. This keeps admin simple and can help when you remortgage.
Others spread loans across several lenders to reduce risk. There is no single right answer. A specialist broker can help you work out what suits your portfolio best.
Final thoughts
Portfolio landlords face more complex checks than single-property landlords. As you grow, lenders look at the whole picture, not just one home at a time.
Good advice matters more the larger your portfolio gets. Pepper Money works with specialist brokers who know portfolio lending. You can find a broker through us today.