Skip to main content
The Buyer’s Checklist · Buyer-side · Cross-border

Property due diligence,
before you sign

Most cross-border buyers lose money on what they did not check —
not on the price they agreed.

Speak to the team
Buyer-side representation20+ countriesIndependent valuationOff-market access
Last reviewed 28 September 2026 · Researched by the GADAIT advisory team
5 checks
Decided before signature, never after
10 non-negotiables
The list you tick before you commit
8 destinations
Europe · Gulf · Indian Ocean
The short answer

What due diligence on a property abroad actually covers

Before signing on a property abroad, five checks decide whether you keep your money: the resale liquidity of the exact micro-location, what can legally be built on the neighbouring plots, the ownership structure and its consequences on capital gains and succession, an independent verification of the title — liens, boundaries, permits — and an independent valuation to avoid the foreigner premium. Every one of them is verifiable before you commit. None of them can be corrected afterwards without cost.

This is The Buyer’s Checklist — the five mistakes that cost seven figures, and the ten points to tick before you commit. It is the checklist we run ourselves, on the buyer’s side. The country-specific rules — costs, taxes, foreign-ownership limits — are linked at the bottom.

Who this is for

We are not the right fit for everyone

This checklist is written for buyers who intend to hold, and one day sell, a property in a country that is not their own. If that is you, the five checks below are the ones that decide the outcome.

  • International families buying a second home
  • Entrepreneurs and family offices diversifying
  • Future residents and expatriates
  • Developers of exceptional estates

What we do on the other side of the brief: sourcing, viewings and negotiation are ours, and so is the chain behind the purchase — lawyers, tax advisers, banks, and the coordination that continues after the sale.

What actually costs money

The five mistakes we see most often

Buying a home abroad should be one of life's great pleasures, not a seven-figure lesson. Here are the five mistakes we see most often — and exactly how to avoid each one.

01

Falling for the view — and forgetting the resale

Why it costs

A breathtaking view sells you, but it will not always sell the next buyer. Trophy properties bought on emotion can sit unsold for years, or resell below the price paid. The view is priced in the day you buy; liquidity is what protects you the day you exit.

How to avoid it

Before you fall in love, ask who your future buyer is and how fast you can reach them. Look at real resale data and rental demand, not the brochure.

Verify before signing
  • Comparable resales in the same micro-location, last 24 months
  • Average days-on-market for similar properties
  • Rental yield and occupancy, if income is part of your plan
  • The realistic buyer pool for an exit in 5 to 10 years
02

The empty plot next door is your future neighbour

Why it costs

That open field, ruin or car park beside your villa can become a five-storey building, a hotel, or a two-year construction site — erasing the view, the privacy and the premium you paid for them.

How to avoid it

Treat the surroundings as part of the asset. Check what can legally be built on every adjacent plot, today and under the plans already filed.

Verify before signing
  • Zoning and land-use designation of the neighbouring plots
  • Building permits already filed nearby
  • Height, density and coastline-setback limits
  • Protected or classified status that could change
A prestige villa at dusk on the Golden Mile, Marbella
The real cost
The price is not where
the money is lost.
It is lost in what nobody checked before the signature.
03

The wrong ownership structure — and tax explodes on resale

Why it costs

How you hold a property — personally, through a company, through another vehicle — changes your capital-gains bill, your annual taxes and how the asset passes to your family. Restructuring after signature is expensive, and sometimes impossible.

How to avoid it

Decide the structure before the offer, with cross-border tax counsel, thinking about the sale and the succession rather than only the purchase.

Verify before signing
  • Capital-gains treatment on a future resale
  • Inheritance and succession rules for non-residents
  • Annual holding taxes: wealth, property, company
  • The double-taxation treaty between your country and the asset's
04

Signing without an independent check of the title

Why it costs

Abroad, a beautiful property can carry hidden liens, boundary disputes, undeclared extensions or an incomplete title. Discover it after signature and you inherit the problem, and the legal bill.

How to avoid it

Never rely on the seller's lawyer alone. Commission independent legal due diligence and a verified, unencumbered title before any funds move.

Verify before signing
  • Clean, complete title in the seller's name
  • No mortgages, liens or charges registered
  • Boundaries matching the deed and the land registry
  • Permits for every built structure and extension
  • Guaranteed access, utilities and rights of way
Terrace and pool of a contemporary villa, Marbella
Buyer-side
Nothing here is a matter
of opinion.
Every line below can be verified before you commit — and only before.
05

Paying the foreigner price

Why it costs

Without local intelligence, international buyers routinely pay above the real market — because the only people advising them are paid by the seller. The premium is invisible until you try to resell.

How to avoid it

Get an independent valuation and true local comparables, and work with a buyer-side advisor whose only interest is yours.

Verify before signing
  • An independent valuation, not the selling agent's estimate
  • Genuine local comparables, not asking prices
  • Buyer-side representation and negotiation
  • A full breakdown of taxes, fees and closing costs
What it costs

The money question, destination by destination

Due diligence is a fraction of what a purchase costs — and the purchase itself costs three times more in one destination than in another. These are our own published figures, each from a page we keep and date.

DestinationAll-in, on top of the priceOf which the independent check
Dubai≈ 6.5% (cash purchase)Bank valuation ≈ AED 3,000
Mauritius≈ 6.5–7.5%Notary, degressive ≈ 2% → 0.5%
French Alps≈ 7–8%Notaire ≈ 1%
Greece≈ 9–11%Lawyer ≈ 1.5% + VAT
Marbella≈ 10–13% resale · 13–14% new-buildLawyer ≈ 1% + VAT
Seychelles≈ 18–19%—

Worked example — a €1,000,000 villa in Greece

Acquisition costs run to roughly €89,000–114,000 on top of the price. The independent lawyer inside that envelope is about €18,600 — 1.9% of the price, and around a sixth of the transaction costs. A technical survey adds from €5,000, a topographic survey €500–1,500. Put plainly: the checks cost under 3% of the price. The mistakes they catch are measured in hundreds of thousands.

Sources

  • Greece, Marbella, Dubai, French Alps, Mauritius, Seychelles — acquisition costs — our own destination pages, last reviewed 9 July 2026
  • Greece — technical and topographic surveys — KG Nordic Advisory and Greek practitioner guides, cross-checked 28 September 2026
  • Spain — valuation (tasación) €250–600 — several Spanish conveyancing sources, cross-checked 28 September 2026

Figures are directional and never a quote: fees vary with the property, the jurisdiction and the scope. What is ours is dated and kept; what comes from outside is named.

The full checklist

Before you sign — ten non-negotiables

If you cannot tick all ten with confidence, you are not ready to commit. Your ticks stay on this device.

Resale demand verified with real data, not with the view
Rental yield and days-on-market understood
Neighbouring plots and what can be built on them checked
Zoning, height and setback limits confirmed
Ownership structure set with cross-border tax counsel
Succession and inheritance impact understood
Title deed clean, complete and independently verified
No liens, charges or boundary disputes
Permits in place for every structure and extension
Independent valuation and buyer-side representation secured
0 / 10 checked
Pierre-Axel Gadait
The author
Pierre-Axel Gadait
Founder & CEO, GADAIT International

Luxury buyer's agent, on the buyer's side only — Mauritius, Dubai, Marbella, Greece, the Maldives and the French Alps. Every price and every rule on this page is sourced (developers, sales offices, official EDB/MRA texts) and dated; pages are re-verified quarterly.

Our editorial method →
Frequently asked

FAQ — Due diligence when buying abroad

First step

Have this checklist run on your shortlist

Send us the properties you are considering. We run the five checks, tell you what we find, and show you the off-market opportunities most buyers never see. Confidential, and without obligation.

WhatsApp

Newsletter

Be among the privileged.

Subscribe to the Gadait International newsletter and receive the latest trends in the luxury market, along with exclusive opportunities for exceptional properties in advance.

Low frequency. High relevance.