How the cheapest overseas property can become the most expensive investment

William Marsh, founder of global real-estate discovery and market-data platform, Untera, argues that international property price rankings are a useful starting point for investors, but that asking-price data must be followed by rigorous local underwriting before any capital is committed.

Related topics:  Overseas,  Property,  Investment
William Marsh | Untera
24th September 2026
Property Investment - 681

International property rankings are useful for discovery, but they are a poor substitute for underwriting. A country-level median can tell an investor where asking prices appear lower. It cannot tell them whether a particular property has clean title, a durable rental market, manageable operating costs or a realistic exit.

That distinction matters because global listing data mixes markets with different property types, legal structures, currencies and levels of transparency.

A low headline price may reflect genuine value. It may also reflect a short lease, unfinished construction, weak demand, poor access, unusual ownership restrictions or simply the mix of homes advertised on a particular platform.

The value and the limits of international comparisons

Across 2,639,539 quality-filtered residential listings in 39 countries, the median asking price ranged from $54,340 in Kazakhstan to $1,186,572 in Hong Kong, a 22-fold spread. South Africa's observed median was $90,100, Brazil's $145,464, the United States' $399,900, the United Kingdom's $454,019, Portugal's $491,984 and Spain's $548,178.

Those figures are medians from Untera's catalogue, not national house-price indices or completed-sale data. Each country in the table had at least 10,000 qualifying listings, but a large sample does not remove selection bias.

The types of homes marketed online, the locations covered by source sites and the balance between new developments and resale properties can all shift the observed median.

For an investor, a useful international comparison has five layers.

1. Start with the source and sample

Ask what the figure actually measures. Is it an asking price or a completed transaction? Does the sample cover the whole country or concentrate on cities and resort areas? Does it include houses, apartments, land and development units together? Is the comparison a live feed or a dated snapshot?

A median is less distorted by a handful of trophy homes than an average, but it still reflects the stock in the sample. It is best treated as a screening signal: a reason to investigate a market, not evidence that the market is cheap.

2. Preserve the original currency

Cross-border comparisons usually convert prices into a common currency. That makes markets easier to compare, but it introduces another moving part. An investor should keep the original asking price and the conversion date alongside the reported dollar or sterling figure.

Currency changes can alter the apparent affordability of a market without changing the local price of a single home. They can also affect renovation costs, rental income, financing and the value of proceeds when the property is sold.

3. Compare like with like

Two properties at the same price can represent very different rights and obligations. Before comparing value, confirm:

  • freehold, leasehold or another tenure;
  • remaining lease term and renewal conditions;
  • completed home, renovation project or off-plan purchase;
  • internal floor area and usable outdoor space;
  • location, access and infrastructure;
  • title, planning and occupancy status; and
  • whether furniture, parking, management agreements or rental guarantees are included.

This is where many international bargains disappear. A lower purchase price can be rational compensation for weaker rights, higher execution risk or a smaller pool of future buyers.

4. Underwrite the total cost

The asking price is only the entry point. A serious comparison should add the costs that apply to the buyer and the property: taxes, legal and registration fees, financing, surveys, insurance, renovation, furnishing, management, service charges, utilities, vacancy, maintenance and eventual selling costs.

These amounts are market- and property-specific, so a global data table should not pretend to calculate them universally. The practical method is to use the international ranking to identify candidates, then build a local cost model for each shortlisted property with current professional advice.

5. Test income and exit assumptions

Gross rental yield is easy to overstate. Net income should allow for realistic occupancy, management, maintenance, taxes, service charges and periods when the property cannot be rented. Short-term rental rules and building restrictions also need to be checked rather than assumed.

Exit liquidity deserves equal attention. An attractive purchase can still be a weak investment if resale demand is thin, marketing periods are long or the buyer pool is restricted. Investors should ask how many comparable homes actually sell, who is likely to buy later and which facts would make the asset harder to finance or transfer.

What the data is good for

International asking-price data is most useful at the top of the funnel. It can show where a budget produces a large pool of options and where prices appear materially different. For example, Untera's separate June 2026 budget dataset found 153,421 observed listings at or below $250,000 in Brazil, 110,068 in the United States, 92,907 in Poland and 68,472 in India.

Those counts measure choice within the observed catalogue. They do not measure investment quality. The next step is always property-level verification and a local underwriting model.

The sound question is not simply, “Where is property cheapest?” It is, “Which market gives me the best risk-adjusted ownership rights, income and exit for the capital I will actually commit?” Asking-price data can narrow that search. It cannot answer it alone.

Data note

The Untera Global Home-Price Index, June 2026 edition, reports the median asking price of quality-filtered residential for-sale listings aggregated by Untera in each country with at least 10,000 qualifying listings.

Prices were converted to US dollars using recent exchange rates. Implausible and low-confidence records were excluded. The figures describe Untera's catalogue as of June 24, 2026 and are not a complete national census or a measure of completed sales.

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