Investor Mistakes in Thailand – A Hard Lesson for Vietnam's Real Estate Market

Introduction – Why Thailand is the Best Case Study for Vietnam

Thailand was and remains one of the most attractive real estate markets in Southeast Asia. Phuket, Bangkok, Pattaya, and Chiang Mai have attracted hundreds of thousands of foreign investors over the past 15 years. The problem is that a significant portion of them made the same mistakes — systemic, repeatable, and costly.

Vietnam today is in exactly the same position Thailand was 10–12 years ago.

Low prices, "early stage" marketing, promises of growth, and the narrative of "last chance opportunity."

If investors don't learn from Thailand's experience, history will repeat itself verbatim.

Mistake 1: Buying the "Vision" Instead of Investment Mathematics

The most common mistake investors made in Thailand was buying marketing narratives instead of real numbers.

Slogans like:

• "Phuket is the new Dubai"
• "Bangkok like London 20 years ago"
• "10–12% ROI guaranteed"

In practice, it looked very different.

Actual Numbers from Thailand

• Average net ROI from condos in Phuket (2016–2023): 4–6%
• After accounting for vacancies, maintenance, and commissions: 3–4%
• In many projects: below USD inflation

Sources:

• CBRE Thailand – Residential Market Reports
• https://www.cbre.co.th
• Knight Frank Thailand – Residential & Investment Outlook
• https://www.knightfrank.co.th

Vietnam today is being sold using exactly the same language.

The only difference is the city names: Da Nang, Ho Chi Minh City, Phu Quoc.

Mistake 2: Buying at the Wrong Point in the Price Cycle

Thailand demonstrated a brutal truth: market timing matters more than location.

Between 2017–2019:

• prices of new condos in Phuket increased by 30–45%
• prices in Bangkok (CBD) by 25–35%

Investors were buying:

• at the peak
• often expecting quick flips

The result?

• lack of liquidity
• no buyers
• secondary market prices lower than purchase prices

Source:

• Bank of Thailand – Property Price Index
• https://www.bot.or.th

Vietnam is currently at an earlier stage of the cycle, but:

• prices in Ho Chi Minh City have already risen 60–80% over 8 years
• Da Nang is beginning to show signs of overheating in the premium segment

Mistake 3: Ignoring Transaction and Operating Costs

In Thailand, investors massively calculated "gross" ROI while ignoring real costs.

Actual Costs in Thailand

• Transfer fee: 2% of value (often split 50/50)
• Stamp duty: 0.5%
• Withholding tax: 1% (or more on profit)
• Sinking fund: 500–1,000 THB/m² (one-time)
• Maintenance fee: 40–80 THB/m²/month
• Property management: 20–30% of rental income

Example:

• 50 m² condo in Phuket
• Maintenance: 2,000–4,000 THB/month
• Management (short-term): 25% of income

Sources:

• Thai Revenue Department
• https://www.rd.go.th
• CBRE Thailand – Property Management Costs

Vietnam has different rates, but the logic is identical.

If ROI is calculated "on paper" today, the problem will surface after purchase.

Mistake 4: Misunderstanding Ownership Rights and Legal Structures

In Thailand, thousands of investors didn't understand what exactly they were buying.

Most common problems:

• confusing freehold with leasehold
• buying "intermediate structures" without real protection
• believing in "guaranteed extensions"

Thai law clearly states:

• leasehold = max. 30 years
• no guarantee of automatic extension
• no way to enforce marketing promises

Source:

• Thai Civil and Commercial Code
• https://www.thailandlawonline.com

Vietnam has an even more complex system:

• no full ownership for foreigners
• percentage limits
• local interpretations of law

Lack of education = Thailand's mistakes repeated.

Mistake 5: Overestimating Foreign Demand

Thailand brutally verified the myth of "eternal foreign demand."

During COVID:

• tourism dropped by 80–90%
• short-term rental condos stood empty
• rental prices fell by as much as 40%

Source:

• Tourism Authority of Thailand (TAT)
• https://www.tatnews.org

Vietnam must consider the same scenario.

A market based solely on tourism = high-risk market.

Mistake 6: Blind Faith in "Guaranteed Rental" and Rental Programs

One of the most costly mistakes investors made in Thailand was believing in so-called guaranteed rental returns.

On paper it looked perfect:

• 6–8% annually
• "risk-free"
• "hands-off"
• "3–10 year contract"

Reality in Thailand

• guarantees were often built into inflated purchase prices
• developers financed payouts from subsequent sales
• after the program ended:
• rent dropped by 30–50%
• real ROI returned to 3–4%

In many cases:

• operating companies went bankrupt
• contracts were difficult to enforce
• investors were left with units they couldn't rent themselves

Sources:

• Bangkok Post – Property & Rental Schemes
• https://www.bangkokpost.com
• Knight Frank Thailand – Rental Yield Analysis

Vietnam today is selling exactly the same scheme.

If a project "only works" because of guarantees — that's a warning sign, not an advantage.

Mistake 7: Overestimating Developer Quality and Lack of Track Record

Thailand showed that not every developer with a brochure and showroom is safe.

Most common problems:

• delays of 12–36 months
• specification changes without client consent
• inferior materials compared to promises
• lack of real after-sales support

In Phuket and Pattaya:

• dozens of projects were never completed
• investors recovered funds after years or not at all

Sources:

• Thai Consumers Foundation
• https://www.consumerthai.org
• CBRE Thailand – Developer Risk Reports

Vietnam is an even younger market.

No developer history = no data, and no data = risk.

Mistake 8: Buying for Foreigners Instead of Local Demand

In Thailand, many investors bought properties exclusively "for foreign tourists."

Problem:

• foreigners are irregular
• demand is cyclical
• dependent on:
• visas
• exchange rates
• politics
• flights

Meanwhile:

• local demand is more stable
• generates long-term rentals
• is less sensitive to crises

Bangkok demonstrated:

• condos for Thais = lower returns
• but higher stability and liquidity

Source:

• Bank of Thailand – Housing Demand Structure
• https://www.bot.or.th

Vietnam should learn this from the beginning, instead of building ghost cities for foreign capital.

Mistake 9: Lack of Exit Strategy

One of the most ignored elements in Thailand was the exit strategy.

Investors assumed:

• "I'll sell for more"
• "there's always a buyer"
• "the market grows"

Reality:

• the secondary market was shallow
• foreigners didn't want to buy from foreigners
• local buyers had different preferences

Result:

• properties sat on the market for years
• transaction prices were lower than asking prices

Source:

• Knight Frank Thailand – Secondary Market Liquidity

Vietnam must plan the exit at the purchase stage.

Without it, investment becomes speculation, not strategy.

Mistake 10: Confusing "Country Growth" with Property Price Growth

Thailand teaches one crucial lesson: country development ≠ automatic property price growth.

Example:

• Thailand's GDP was growing
• infrastructure was improving
• tourism was breaking records

Yet despite this:

• prices of many condos stagnated
• real profits were eaten by inflation and costs

Sources:

• World Bank – Thailand Economic Data
• https://data.worldbank.org
• CBRE Thailand – Long-Term Price Index

Vietnam is currently in a phase of dynamic growth, but this:

• doesn't guarantee profits for everyone
• only rewards well-chosen locations and timing

Lessons for Vietnam – What Must Be Done Differently

If Vietnam is to avoid Thailand's mistakes, investors must:

• calculate net ROI, not marketing ROI
• understand the law, not promises
• choose developers with track records
• buy for real demand
• plan exit from day one

Thailand paid for its lesson with billions of dollars in capital.

Vietnam has a unique opportunity to avoid repeating that cost.

Summary

Thailand is not a bad market.

It's a mature market that:

• exposed mistakes
• verified narratives
• taught investors humility

Vietnam is at a crossroads today.

It can:

• repeat the same patterns
• or
• build a market based on data, not emotions

For informed investors, this is the most important lesson of this decade.