Edinburgh · Scotland · UK-wide
You are a portfolio landlord once you have four or more mortgaged buy-to-let properties. From that point the Prudential Regulation Authority requires lenders to assess your entire portfolio on every new application, not just the property you are buying — which means a business plan, cash flow forecast, asset and liability statement and a full portfolio schedule with each application. Many landlords hit this threshold without realising and find their next application far harder than the last. Prime Mortgages specialises in packaging portfolio cases properly so they get underwritten on their merits.
Under PRA rules, a lender considering your application must assess the whole portfolio's sustainability, not just the new purchase. In practice that means underwriting is manual, slower and much more document-heavy.
Portfolios accumulate rates. It is common to find a landlord with eight properties across five lenders on six different rates, three of which have quietly reverted to a standard variable rate.
A structured refinance — mapping every end date, identifying which properties can be released, and moving them in tranches — regularly saves four-figure sums per property per year. We will build that map for you before you commit to anything, and there is no fee for the review.
| Lender type | Typical appetite |
|---|---|
| Mainstream buy-to-let lenders | Often cap at 10 properties or £2m total exposure |
| Specialist portfolio lenders | No property cap, higher rates, manual underwriting |
| Commercial lenders | Portfolio taken as a single facility secured over multiple properties |
| Limited company lenders | Increasingly the default for landlords still growing |
No fee for the initial conversation, and no obligation. We usually reply the same working day.
Common questions
Four or more mortgaged buy-to-let properties. Properties owned outright do not count towards the threshold, but lenders will still ask about them. Once you are classed as a portfolio landlord, every subsequent application triggers a full assessment of your entire portfolio.
Typically a portfolio schedule listing every property with value, mortgage balance, lender, rate, end date and rent; a business plan; a cash flow forecast covering 12 to 24 months; an assets and liabilities statement; the last two years of tax calculations and tax year overviews; and tenancy agreements. We prepare these with you so the case is consistent across every document.
Not in law, but individual lenders set limits — commonly 10 properties or £2m to £5m of total lending with them. Specialist portfolio lenders have no property cap. In practice the constraint is your aggregate loan to value and the background portfolio stress test rather than the number of properties.
Most often because of the background portfolio rather than the property in front of the lender. If your aggregate loan to value is above their cap, or the total rent across the portfolio fails their stress test, they will decline a perfectly good individual case. That is fixable with the right lender and better presentation.
Yes. Commercial and specialist lenders will take a portfolio as a single facility secured over multiple properties, with one rate and one end date. It simplifies administration considerably, though it makes selling individual properties slightly more involved as each release has to be agreed.
A twenty-minute conversation will tell you what you can realistically borrow, what it will cost and whether it is worth doing. It is free, and we will tell you honestly if the answer is no.