The one percent rule, and why it does not travel

The rule

The one percent rule is the most widely repeated piece of property advice in the English speaking internet, and it is close to useless outside the specific conditions that produced it.

Do the arithmetic once and the problem is obvious. One percent of the price, every month, is twelve percent of the price a year. That is a gross yield of twelve percent, before a single cost is deducted. Dubai's better yielding apartment stock produces somewhere in the region of six to eight percent gross. Prime London produces three to four. The rule does not identify good properties in those markets. It identifies none of them.

Where it came from, and what it was carrying

The rule was written by and for American small landlords buying cheap single family houses in the Midwest and the South, and in that setting it was a reasonable shorthand for something real.

Those buyers faced an annual property tax that could run one to two percent of value every year, insurance, and maintenance on old timber housing stock. They managed the properties themselves or paid around ten percent to someone who did. Against costs of that shape, twelve percent gross was roughly the level at which a property cleared its expenses, serviced a mortgage, and left something over for the years when a tenant stopped paying.

The rule was never a statement about property. It was a statement about that cost stack. Carry the number to a market with a different one and you have carried the answer without the question.

What changes in the Gulf

Nearly everything the rule was implicitly pricing.

There is no annual property tax, which removes the single largest recurring cost in the American version. In its place sits the service charge, billed per square foot by the owners association, which the rule has no term for at all and which can consume fifteen to twenty five percent of gross rent on its own. Acquisition costs are front loaded rather than annual: four percent to the Dubai Land Department, agency, trustee and registration, roughly eight to ten percent round trip, which is why the minimum hold period exists as a concept here in a way it does not there.

The result is a market where the cost share of gross rent is different in structure and often similar in size, but the yield the market clears at is far lower, because buyers are paying for capital growth and for the absence of income tax rather than for cash flow alone.

A rule calibrated on the first cost stack cannot say anything true about the second.

The rule rewritten so it works anywhere

Do not import a threshold. Derive one.

Measure what fraction of gross rent your own market's running costs consume, then work backwards from the net yield you actually want. At a thirty percent cost share, a five percent net yield needs a little over seven percent gross. At forty five percent, the same five percent net needs over nine. Now you have a screening number that means something, and it will be different in Dubai than in Manchester, and different again in a tower with a heavy service charge than in a villa community without one.

That is the whole trick. The rule's mistake is not the number twelve. It is publishing a number at all, in a form that hides the assumptions underneath it.

What survives, and what to use instead

What survives is the instinct: before spending time on a property, check quickly whether the income is in the same postcode as the price. That is worth doing, and it takes seconds.

What should replace the number is net rental yield on everything you paid, and then break-even occupancy to see how much of the year the property has to be let simply to stand still. Those two are not shortcuts, which is exactly why they do not stop working when you cross a border.

The deeper lesson is the transferable one, and it applies well beyond property. A heuristic is a compressed argument. When you carry the heuristic somewhere new without unpacking the argument, you have carried a conclusion that was reached about somewhere else. The reverse the assumption framework is the habit that catches this, and this rule is the cleanest example of why the habit is worth having.

The arithmetic

Where it breaks

• One percent a month is twelve percent a year gross, a level that does not exist across whole markets. Applied to Dubai or London the rule rejects every property in the city, which is not analysis, it is a broken instrument.
• It silently assumes an American cost structure: annual property tax, no service charge, self management, and cheap housing stock. Change any one of those and the threshold it encodes is no longer the right threshold.
• A property can clear one percent comfortably and still lose money, because the rule never looks at what the running costs are, only at rent against price.
• It anchors the buyer on price. Two units at the same price with the same rent are the same under the rule, even when one sits in a building with a failing chiller and no reserve fund.
• Where it does pass, it tends to pass in the cheapest stock in the weakest locations, because those are the places with the highest rent to price ratios and the highest vacancy, arrears and capital risk.

When to use it

As a thirty second filter on a long list, in a market whose cost structure you have already measured and whose threshold you have therefore recalculated. Never as a reason to buy, and never in a market it was not written for.

Sources

1. Dubai fees and charges on a property purchase
2. Dubai rental ROI by area and property type, 2026
3. Dubai Land Department

Last reviewed 27 August 2026. Commercial relationship disclosure: the author works in Dubai real estate brokerage. See the disclosure standards. Disclosure standards.