Property Bonds Explained: Returns, Security and Risks

"Property bonds" covers a reasonably wide range of products, but the underlying mechanics are consistent enough to explain properly in three parts: how the return is generated, what the security behind it actually means, and where the whole thing sits on a realistic risk spectrum once the marketing language is stripped away.

How the returns actually work

A property bond, sometimes called a loan note, is a private loan from investors to a company, usually one involved in property development or investment. In place of borrowing solely from a bank, the company borrows directly from bondholders and agrees to pay a fixed rate of interest for a fixed term, commonly somewhere between one and five years.

The rate is set at the outset and doesn't move with the market, unlike a variable savings account or a dividend that can be cut. Interest is usually paid monthly, quarterly or annually, giving investors regular income throughout the term, though some bonds instead roll up interest and pay it as a single lump sum alongside the return of capital at maturity. Rolled-up structures are often marketed with a higher headline rate, since the stated figure reflects compounding over the full term, but they also mean an investor sees no cash at all until the end, which removes an early warning signal if the issuer starts struggling to service the debt.

Capital is intended to be returned in full at maturity, funded either by the sale of the completed development, refinancing onto longer-term debt, or the proceeds of the wider business the bond has funded. That word "intended" is doing real work in that sentence. Unlike a bank fixed-rate bond, there's no deposit-taking institution and no compensation scheme standing behind the promise if the underlying business can't deliver.

What "security" actually means, and its limits

Most property bonds describe themselves as secured, and the word carries a lot of psychological weight for investors used to thinking of a mortgage as safe. What it actually means in practice is narrower and more conditional than it sounds.

A fixed charge is a legal claim registered against a specific, identified property or development site, usually at HM Land Registry. It gives the charge holder a formal right to force a sale of that asset to recover what's owed if the borrower defaults. That's a real legal protection, but it comes with three important limits.

• Valuation risk. The security is only worth what the property will actually fetch in a sale, which is frequently less than the valuation used when the bond was issued, particularly if that sale happens quickly or during a weaker property market.
• Loan-to-value. If the bond, combined with any debt ranking ahead of it, represents a high proportion of the property's value, there's very little cushion left if the sale price disappoints.
• Subordination. Many property bonds rank behind a senior lender, typically a bank providing the bulk of development finance. In a wind-down, the senior lender is repaid in full first from sale proceeds. Bondholders, even with a valid charge of their own, only see what's left, and if that senior debt is large relative to the property's realisable value, "what's left" can be very little or nothing.

A charge over a property is a right to a slice of whatever the asset actually sells for, not a guarantee that the slice will cover what's owed.

It's also worth knowing that not every case turns out to involve genuine, enforceable security at all. The collapse of London Capital & Finance in January 2019, which had issued mini-bonds to over 11,000 investors worth more than £237 million, is a documented example of marketing that overstated the safety of the underlying arrangements. The FCA subsequently found the promotions gave a misleading picture, and that funds had largely gone to a small group of connected, high-risk borrowers rather than the kind of asset-backed lending investors believed they were funding. It's a reminder that the word "secured" is a claim to be checked against the actual charge documents, not taken on trust from a brochure.

A realistic risk spectrum

It helps to place property bonds on a spectrum rather than treat them as a single, uniform category.

Blackmore Bond sits closer to the higher-risk end of that spectrum and illustrates what can happen there. It raised around £46 million from roughly 2,800 investors, lending the proceeds on to fund eleven property developments through a special purpose vehicle, and offered annual interest of between 6.5% and 10%. It stopped paying bondholders in October 2019 and entered administration in April 2020. Administrators later indicated that recoveries were likely to be no more than around £1 million of the £46 million raised, meaning the overwhelming majority of that money was lost.

A related, if not identical, example is Basset & Gold, a mini-bond and Innovative Finance ISA provider that collapsed into administration in April 2020 after the bulk of its roughly £36 million raised from about 1,800 investors had been channelled into a payday lender that itself failed. It wasn't a property bond specifically, but it shares the same structural DNA as one: a fixed-rate loan note, minimal diversification, and no deposit protection standing behind it if the underlying lending goes wrong. Some of its investors have since had grounds for compensation through the Financial Services Compensation Scheme, though that route relates to how the bonds were marketed and advised on, not the bonds themselves.

None of this means every property bond behaves like these examples, and plenty of issuers run tighter, better-documented, appropriately secured lending than the cases above. But rate alone rarely tells the full story, and a bond paying meaningfully more than its peers is compensating investors for something specific, whether that's a longer term, a weaker security position, or a less established issuer. Our piece on what actually determines a property bond's rate unpacks that relationship in more detail, and our broader look at whether property bonds are a good investment weighs the asset class up as a whole.

For a wider view of how alternative investments compare on risk generally, it's worth reading our overview of alternative investment safety alongside this one, and returning to the property bonds hub for the full picture of how the asset class works.

If you'd like to see current eligible opportunities assessed against criteria like these, our comparison tool is the place to start.

This article is general information only and does not constitute financial advice. Property bonds carry a real risk of losing some or all of the capital invested, and anyone considering one should seek independent advice from an FCA-authorised financial adviser first.