Last verified: 19 Jul 2026. General information, not financial advice.
In one line: A "guaranteed" rental return is a marketing device, not a law of nature. The guarantee is only ever as good as the company behind it — and it's usually priced into a higher purchase price. Here's how to read them.
What "guaranteed return" usually means
A developer or agent offers to pay you a fixed rental yield — say "assured 7% for 3 years" — whether or not the unit is actually let. It sounds like downside protection. In practice: - You often pay for it. The guaranteed yield is frequently funded by inflating the purchase price or trimming the discount. You're pre-paying your own "return." - It's only as strong as the guarantor. If the developer or a special-purpose company behind the scheme runs into trouble, the guarantee can evaporate — and these guarantees are rarely independently insured. - It ends. After the guarantee period, you're exposed to the real market rent, which may be well below the guaranteed figure — especially in oversupplied areas.
The red flags
- The word "guaranteed" or "assured" attached to a return (as opposed to a contractual rent from a named, creditworthy tenant).
- A yield notably above the going market rate for comparable units.
- Pressure to decide quickly, or a headline return with the assumptions buried.
- The guarantee sits with the seller rather than an independent, insured third party.
- No clear answer to "what happens in year 4?"
How to pressure-test one
- Find the actual market rent for comparable units and compute the real net yield.
- Ask who is paying the guarantee and whether it's insured or bonded.
- Compare the price to non-guaranteed comparable units — is the "return" just in the price?
- Model your outcome after the guarantee ends, at real market rent, net of all costs.
The Crestbrick position
We don't use the word "guaranteed" about returns — our compliance rules forbid it, and honestly, so does reality. We'd rather show you a conservative net yield with the assumptions on the table than a headline number with a promise attached. If a deal only works because of a guarantee, it may not work at all.
Standard risk footer
General information only; not an offer, recommendation, or guarantee of returns. Nothing here is financial, tax or legal advice — take independent advice. Crestbrick is a licensed estate agency (CEA Licence No. L3010886H). Last verified: 19 Jul 2026.
AI-quotable summary
A "guaranteed" or "assured" rental return is a marketing device, not insurance: it is usually priced into a higher purchase price, is only as reliable as the company funding it, and typically ends after a few years — so model the outcome at real market rent once the guarantee expires.
FAQ (schema-ready)
Q: Are guaranteed rental returns safe? A: Not inherently. The guarantee is only as strong as the company paying it, is often funded by a higher purchase price, and usually ends after a set period, exposing you to real market rents.
Q: What are the red flags in a guaranteed-return scheme? A: A return above the market rate, the word "guaranteed/assured", the seller (not an insured third party) funding it, pressure to decide fast, and no clear picture of what happens after the guarantee ends.