Thailand's residential property market carries two hard data points that any investor considering a condo purchase in Phuket or Koh Samui should absorb before committing capital. First, the mortgage rejection rate for properties priced below 3 million THB stands at approximately 48%, according to REIC data cited by Nation Thailand in October 2026. Second, the absorption period for unsold units in Bangkok sits at an estimated 67 months - more than five and a half years at the current rate of transactions. Our analysts treat these figures not as abstractions but as direct inputs to exit-strategy planning in resort markets.
On 15 October 2026, the Thai government launched the One House Per Person PLUS programme, committing a 50 billion THB (approximately 1.5 billion USD) credit pool of subsidised 40-year mortgages administered through Government Housing Bank, running until 30 December 2030 or until funds are exhausted. The stated objective is to reduce the overhang of unsold stock. However, the development industry itself acknowledges that the bottleneck is not demand in principle but the stringency of bank credit procedures. We monitor these dynamics continuously, and the analysis below maps their implications for investment decisions in the Phuket and Koh Samui resort segments.
Quick answer
- 48% of mortgage applications in the sub-3 million THB segment are rejected (industry data, mid-2026); the overall rejection rate is approximately 45%
- Bangkok unsold-stock absorption stands at an estimated 67 months at current sales velocity
- Thai household debt is at 85.9% of GDP, per Cushman and Wakefield (October 2026) - a persistent structural barrier to domestic purchasing power
- Thailand GDP growth is forecast at approximately 2.1% per year for 2026-2027 (IMF and World Bank projections), a pace too modest to materially reduce household debt burdens in the near term
- The One House Per Person PLUS programme targets the sub-3 million THB bracket, well below the typical price range of resort condos purchased by foreign investors in Phuket (commonly 5-15 million THB and above)
- Resort markets (Phuket, Koh Samui) carry a structurally different demand profile compared with Bangkok - a higher share of foreign buyers and cash transactions, which provides partial insulation from domestic credit constraints
Options and scenarios
Scenario A: Banks ease credit criteria, the programme gains traction
If Government Housing Bank and commercial lenders lower acceptance thresholds, a meaningful portion of the 50 billion THB pool flows into actual transactions. In this scenario, unsold-unit inventories in mass-market segments (Bangkok, suburban corridors, provincial cities) begin to contract. The effect on Phuket and Koh Samui is indirect: improving sentiment in the domestic market could draw Thai middle-class investors toward resort locations such as Rawai, Karon, or Lamai, where studio pricing starts at roughly 3-4 million THB. Based on our estimates, this scenario would improve secondary-market liquidity by 10-20% over a 2-3 year horizon, but would not resolve the structural household debt problem.
Scenario B: Credit criteria remain restrictive (baseline)
This is the scenario our analysts consider most probable, given the Bank of Thailand's consistent track record of maintaining cautious lending standards. With rejection rates near 48%, even a large credit pool does not translate proportionally into transaction volume. The absorption timeline stays close to the current 67 months. For an investor holding a condo in Bang Tao, Kamala, or Bophut and planning an exit, the pool of viable Thai buyers remains narrow. The realistic buyer profile is another foreign investor or a high-net-worth Thai purchasing in cash. We assign this scenario a 50-55% probability based on our current data set.
Scenario C: Macro conditions deteriorate - rising debt ratios, THB weakness
With household debt already at 85.9% of GDP and GDP growth at only 2.1%, there is a credible tail risk of further deterioration in Thai buyer creditworthiness. A slowdown in tourism receipts or export revenues could push absorption timelines above 70-80 months. In this scenario, an investor planning to exit should factor in either a 10-15% price reduction relative to initial expectations, or an extended marketing period of 18-24 months. Premium land-constrained locations - Surin and Layan on Phuket, Chaweng Noi on Koh Samui - retain relative resilience due to limited supply.
Comparison table
| Parameter | Scenario A: Credit easing | Scenario B: Status quo | Scenario C: Macro deterioration |
|---|---|---|---|
| Mortgage rejection rate | Falls to approx. 35-40% | Holds at approx. 45-48% | Rises above 50% |
| Bangkok stock absorption period | Shortens to approx. 50-55 months | Approx. 67 months (current) | Extends to 70-80+ months |
| Secondary market liquidity - Phuket | Moderately positive | Neutral to limited | Negative |
| Secondary market liquidity - Koh Samui | Weakly positive | Neutral | Negative |
| Typical resale timeline (resort condo, secondary market) | 6-12 months | 12-18 months | 18-24+ months |
| Realistic buyer profile at exit | Thai and foreign buyers | Predominantly foreign | Foreign buyers at discount |
| Probability (our estimates) | 20-25% | 50-55% | 20-25% |
Risks and mistakes
Liquidity risk at exit. The most common error we observe in investor planning is the assumption that Thailand's condo secondary market behaves like a European residential market. In practice, Thai secondary-market condo liquidity is materially lower. Developers continuously release new projects that compete directly on price with resale stock, often offering higher finish specifications and flexible payment schedules.
Segment mismatch risk. The One House Per Person PLUS programme addresses the sub-3 million THB bracket. Condos acquired by foreign investors in Phuket districts such as Bang Tao, Surin, and Kamala, or in Koh Samui's Bophut and Maenam, typically price between 5 and 15 million THB. Even a fully successful programme would not generate direct demand for properties in this bracket.
Currency exposure. The exchange rate between major foreign currencies and the Thai baht fluctuates in ways that can materially affect both the real cost of acquisition and the net return on exit. Across a staged payment schedule of 12-24 months, a 5-10% rate shift is not unusual. We cover this topic in a dedicated currency risk analysis.
Over-reliance on Bangkok data. The 67-month absorption figure applies to Bangkok. Phuket and Koh Samui operate with different dynamics: smaller supply pipelines, a higher share of foreign buyers, and tighter correlation with tourism flows. Mechanically applying Bangkok metrics to resort markets produces misleading conclusions.
Regulatory change risk. Discussions regarding potential expansion of freehold ownership rights for non-Thai nationals remain ongoing. Any legislative shift could affect market liquidity in either direction. We track this topic as part of our regular monitoring.
FAQ
Does the One House Per Person PLUS programme apply to foreign investors?
No. The programme is open exclusively to Thai nationals purchasing a property priced below 3 million THB. Foreign buyers are not eligible. Its relevance for non-Thai investors is indirect: the programme may affect overall domestic market liquidity and, consequently, the pool of Thai buyers available on the secondary market.
How does a 48% mortgage rejection rate affect an exit from a Phuket or Koh Samui investment?
A rejection rate near 48% means that roughly half of Thai buyers who express interest cannot secure financing. On the secondary market, this structurally reduces the available buyer pool. When modelling an exit strategy, our analysts recommend assuming that the primary buyer group will be other foreign investors and high-net-worth Thai nationals paying in cash.
How long does it realistically take to resell a condo on the secondary market in Phuket?
Based on our estimates for resort locations including Bang Tao, Kamala, and Surin, the typical resale timeline under current 2026 market conditions is approximately 12-18 months. Properties with sea views in land-constrained locations tend to transact faster.
Is Thai household debt at 85.9% of GDP a serious threat to the property market?
It is one of the highest ratios in the ASEAN region. Per Cushman and Wakefield (October 2026), this level of indebtedness combined with moderate GDP growth of around 2.1% represents a durable constraint on domestic purchasing power. This does not signal an imminent crisis, but it limits the pace of price appreciation and slows domestic absorption of new supply.
Do Phuket and Koh Samui behave the same way as Bangkok?
No. Resort markets carry a different structure: foreign buyers account for an estimated 40-60% of freehold condo transactions on Phuket based on market estimates, with a stronger link to tourism sector performance and a smaller absolute supply pipeline. The Bangkok 67-month absorption figure does not translate directly to either resort island.
What factors matter most when planning an exit from a Thai property investment?
The key variables in our framework are: location within a supply-constrained district (such as Layan or Surin on Phuket), asset quality and on-site management, the acquisition price relative to prevailing market levels (overpaying compresses exit optionality), and a realistic assessment of the secondary-market buyer profile. We verify on the ground that properties in districts with active short-term rental markets tend to be easier to resell.
Is it worth waiting until 2030 for the programme to expire before buying?
Not necessarily. The One House Per Person PLUS programme targets the sub-3 million THB segment and does not directly influence pricing in the 5-15 million THB investment bracket. More material inputs are the THB exchange rate trend, interest rate conditions in the investor's home country, Thai tourism volume dynamics, and any regulatory changes affecting foreign ownership structures.
Which Phuket and Koh Samui districts show the highest secondary-market liquidity?
On Phuket, our data consistently points to Bang Tao, Kamala, and Surin as the districts with the most active secondary markets, supported by developed tourism infrastructure and a steady inflow of new foreign buyers. On Koh Samui, Bophut (around the Fisherman's Village area) and Chaweng perform similarly. Nai Harn on Phuket and Lamai on Koh Samui tend to attract a more niche buyer profile, which constrains liquidity somewhat.
Summarising our analysis: the structural weakness of domestic mortgage demand in Thailand is a documented, quantified fact that belongs in any exit-strategy model. The One House Per Person PLUS programme may improve absorption in the mass-market segment, but with a rejection rate of 48% and household debt at 85.9% of GDP, we recommend that investors plan their exit assuming the most probable buyer will be another foreign investor or a cash-paying Thai national. Supply-constrained districts with active tourist rental markets - Bang Tao, Surin, and Bophut in particular - offer the strongest insulation against liquidity risk.
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