A transparent framework for comparing Thai property as an investment: four equally-weighted sub-factors — rental yield, appreciation potential, liquidity and risk — each scored 0–25 for a 0–100 total, built on real market benchmarks rather than a single vague "good investment" label.
Status, upfront: this page defines the Investment Score methodology in full detail. A single simpler 0–10 "Investment" rating is already live inside the BAANLYY Area Score for every neighbourhood. This four-factor, 0–100 breakdown is the disclosed framework for a more detailed version — not yet computed and published per building. We say so plainly rather than implying a score that doesn't exist yet.
| Sub-factor | Points | How it would be measured |
|---|---|---|
| Rental yield | 0–25 | Typical gross rental yield for the area/segment, benchmarked against BAANLYY's own market research (e.g. Bangkok's city-wide 4.5–6.0% gross yield range, with mid-ring transit-connected districts scoring higher than prime low-yield addresses). |
| Appreciation potential | 0–25 | Editorial assessment of likely capital growth — driven by infrastructure pipeline (new BTS/MRT extensions), supply/demand balance, and district trajectory. Directional and editorial, not a price forecast or guarantee. |
| Liquidity | 0–25 | How easily a property in the area could realistically be resold or re-let — proxied by transit connectivity, transaction/listing volume visible in the market, and depth of foreign and local buyer demand. Not a measured days-on-market statistic; a proxy-based editorial assessment. |
| Risk | 0–25 | Factors that work against an investment thesis — oversupply signals, foreign-ownership-quota exposure (see the Condominium Act's 49% cap), construction/delivery risk for off-plan purchases, and legal/title complexity. Scored inversely: fewer red flags scores higher. |
Investment Score = Rental Yield (0–25) + Appreciation Potential (0–25) + Liquidity (0–25) + Risk (0–25), for a maximum of 100. All four sub-factors are equally weighted by default. This mirrors the same disclosed, equal-weight approach BAANLYY uses for its Neighborhood Score and its Retirement Destinations Score — every BAANLYY score uses the same transparent-methodology principle, even where the specific factors differ by purpose.
The Rental Yield sub-factor is designed to be grounded in BAANLYY's own published market research rather than an assumed number. For example, our Bangkok Condo Market Report benchmarks typical gross yields at roughly 4.5–6.0% city-wide, with mid-ring transit-connected districts (On Nut, Phra Khanong, Ari, Ratchathewi) running higher at 5.5–7.0% and prime Sukhumvit addresses (Asoke, Thonglor) lower at 4.0–5.0% but more resilient. A district or building's Rental Yield sub-score would be set relative to these kinds of area-level benchmarks as they're published for each city, not invented on a per-property basis.
Thailand-specific investment risks that would feed the Risk sub-factor include the Condominium Act's 49% foreign-ownership quota (a building near its quota limit is riskier for a foreign buyer than one with quota headroom), local oversupply signals in mid-to-outer segments, off-plan construction and delivery risk, and general legal/title complexity. Scoring these inversely into the same 0–100 scale as yield and appreciation — rather than listing them as a separate disclaimer — forces a more honest, single-number comparison between a high-yield but higher-risk option and a lower-yield but lower-risk one.
BAANLYY can connect you with vetted agents and property lawyers to verify yield, quota status and title before you commit.
This is a disclosed proprietary methodology for general research purposes only — not investment, legal, financial or tax advice. Yield and pricing benchmarks referenced here are cross-checked portal/advisory estimates as of 2026, not an official index. Always verify current figures, foreign-ownership quota status and legal title directly with a licensed agent, valuer or property lawyer before making a purchase decision.
Primary and official sources are cited above. Government rules, fees and procedures in Thailand change over time and vary by office; always confirm current requirements with the relevant authority before relying on them. BAANLYY never takes paid placement in editorial content.