Sinking Fund in Thai Condominiums: What Buyers Pay and Why Building Heal
The sinking fund (sometimes described as a capital reserve or repair fund in project materials) is a one-time (or occasionally top-up) contribution collected for major long-cycle building expenses, think elevator replacement, roof work, pool resurfacing, and structural repairs. In Phuket condos, a practical planning band seen in many projects is 400-800 THB per square meter at purchase. For a 50 sqm unit, that is roughly 20,000-40,000 THB, commonly about $600-$1,200 at ~33 THB/USD, though FX moves, and premium projects may sit above the band.
What the sinking fund covers (and what it does not)
| Expense type | Usually funded by | Why it matters |
|---|---|---|
| Pool cleaning chemicals | CAM (operating) | Predictable monthly |
| Pool structural/leak remediation | Sinking fund (often) | Lumpy, expensive |
| Lobby cleaning | CAM | Predictable |
| Lobby major renovation | Sinking fund / vote | Infrequent but costly |
| Elevator routine service | CAM | Predictable |
| Elevator replacement | Sinking fund | Rare but extremely expensive |
Typical amounts: quick math at three unit sizes
| Unit size | Sinking fund at 500 THB/sqm | Approx USD at 32.7 THB/USD |
|---|---|---|
| 35 sqm | 17,500 THB | ~$530 |
| 50 sqm | 25,000 THB | ~$760 |
| 80 sqm | 40,000 THB | ~$1,210 |
If your project quotes 800 THB/sqm and you buy 50 sqm, that is 40,000 THB (~$1,210), a material closing cost that should sit next to your legal fees and transfer-related expenses in the same spreadsheet.
How to check sinking fund health (before you buy)
- Latest financial statements for the juristic person (income/expense, reserves).
- Sinking fund cash balance and whether it is held in a dedicated account.
- Planned major works (five-year maintenance plan, engineer reports if available).
- History of special assessments, if the building repeatedly “surprises” owners, that is a red flag.
A practical rule used by some investor-buyers (not legal advice; buildings vary): a healthy condo may hold reserves in the ballpark of 12+ months of total CAM collections, but this is only a heuristic. Older buildings with imminent capex needs can be “healthy” on paper yet still require funding for a roof replacement sooner than average.
| Signal | Interpretation |
|---|---|
| Strong reserve + documented maintenance plan | Lower special-assessment risk (not zero) |
| Low reserve + deferred maintenance | Higher probability of cash calls |
| New build with low occupancy | Reserve builds over time, watch CAM collection reality |
Underfunded buildings: what can go wrong
Examples of capex shocks (illustrative ranges; projects vary widely):
| Project | Illustrative cost magnitude | Owner impact |
|---|---|---|
| Elevator modernization | millions of THB | Spread across units by quota share |
| Roof replacement | large six- to seven-figure THB | Same |
| Waterproofing failures | varies | Can cascade into interior damage claims |
How sinking fund affects your yield (investor framing)
| Scenario | Economic effect |
|---|---|
| Normal reserve + stable CAM | Predictable ownership cost |
| Special assessment | Sharp one-year cash outflow |
| Forced sale during assessment | Potential price discount |
Developer sales vs resale: sinking fund timing
| Purchase type | What to verify |
|---|---|
| Developer sale | Payment schedule + exact THB/sqm |
| Resale | Outstanding juristic invoices + reserve status |
Reading the budget: where money leaks
| Budget line | What to ask |
|---|---|
| Electricity (common) | Spike vs prior year, why? |
| Pool maintenance | Chemicals + contractor costs |
| Security | Hours vs occupancy |
| Insurance | Coverage limits and exclusions |
Case-style scenario: special assessment vs higher purchase price
| Decision lens | What to prioritize |
|---|---|
| Price-only | Risk missing lumpy capex |
| Reserve + documentation | Better visibility on tail risks |
Due diligence before you transfer
Ask us for a due diligence checklist tailored to your shortlisted Phuket projects, before you transfer.
Frequently Asked Questions
It is a capital reserve fund for major repairs and replacements in the common property, separate from monthly CAM fees that cover routine operations.
Many projects quote roughly 400-800 THB per square meter at purchase, but it varies by developer, building age, and budget. Always confirm the exact amount in the sale documents.
No. CAM is recurring monthly operating fees. The sinking fund is a reserve for larger periodic capital expenses such as major equipment replacement.
Yes, request juristic financial statements, reserve balances, and maintenance plans during due diligence. Your lawyer can help structure the requests.
The condominium may levy special assessments on owners to fund required works, which can be costly and unpredictable compared to steady reserve funding.
Related Guides:
- Thailand Property Tax for Foreign Buyers, ongoing tax considerations
- Hidden Costs of Buying Property in Thailand, complete cost picture
- How Foreigners Buy Phuket Property 2026, Phuket purchase steps
Maksim Shchegolev
Founder, MORE Group
Founder of MORE Group. Four years in investment banking before moving to Phuket, where he has worked in the local property market since 2018. Oversees developer relationships and every engagement above $300K.
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