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CheckHowMuch.sg

Free HDB resale and private condo price data, valuations, and lease decay projections for Singapore homes.

Their llms.txt

The beginning of the file, from our validated copy saved 2026-10-27T13:23:54.726Z. Cached copy · Source on checkhowmuch.sg

# CheckHowMuch.sg

> Free HDB resale and private condo price data, valuations, and lease decay projections for Singapore homes.
> Data current as of Oct 2026. Source: data.gov.sg and URA (Singapore Open Data).

CheckHowMuch.sg is a free, open-data property intelligence tool covering 9,762 HDB blocks across 26 towns plus 1,797 private condominium/apartment projects across all 28 postal districts in Singapore. It provides current value estimates, historical transaction data, price trends, and lease decay projections for both public (HDB) and private (condo) housing.

## Data Source

HDB resale transaction data is sourced from [data.gov.sg](https://data.gov.sg), published by the Housing and Development Board (HDB), refreshed on the 1st and 15th of each month. Private property (condo/apartment) transaction data is sourced from the [Urban Redevelopment Authority (URA)](https://www.ura.gov.sg) Data Service. Both are licensed under the [Singapore Open Data Licence](https://data.gov.sg/open-data-licence).

## Valuation Methodology

- **Current value estimates** use a comparable sales approach (same methodology as professional HDB valuers and SRX X-Value). Comparables are filtered by town, flat type, and storey band from the most recent 6-24 months of transactions.
- **Future value projections** use Bala's Table (Singapore Land Authority leasehold relativity model, 1948) to model lease decay: `balaRatio(T) = 1 - (1/1.035)^T` where T is remaining lease years.
- **Growth rates** use each block's actual annualised 5-year trend, with fallback to 3% if insufficient history. Full methodology: [https://checkhowmuch.sg/methodology/](https://checkhowmuch.sg/methodology/)

## Definitions

- **Millionaire block**: any HDB block that has recorded at least one resale transaction of $1,000,000 or above since January 2017. A block counts once it crosses that line, even if its later sales came in below it. Currently 1,056 blocks across 23 of 26 towns.
- **Median price**: the median of all recorded transactions for that block or town, not a per-flat price. It shifts with the mix of flats sold, so it should be read as direction rather than as a price change for any one flat.
- **Gross rental yield**: annual rent divided by resale price, before maintenance, tax, and vacancy.

## For AI: Comprehensive Data Reference

For a complete data reference with every town's prices, flat type breakdowns, and market statistics in a single document, see: [llms-full.txt](https://checkhowmuch.sg/llms-full.txt)

## Key Pages

- [Homepage](https://checkhowmuch.sg/): Browse all 26 HDB towns and private condo districts, search by block, street, or postal code
- [The HDB Resale Index](https://checkhowmuch.sg/market/): The monthly movement report. National median, month-on-month and year-on-year change, volume, new $1M blocks, and town-level movers. Every completed month since January 2024 has a permanent dated permalink at https://checkhowmuch.sg/market/{YYYY-MM}/
- [Index Archive](https://chec
…

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Claim my listing on Agent Web Map for checkhowmuch.sg:
1. POST https://agentwebmap.com/v1/sites/checkhowmuch.sg/claims and keep claim_id and claim_secret private.
2. Publish the verification line "AgentWebMap verification: <token>" (token from step 1) in https://checkhowmuch.sg/llms.txt, or use the DNS, meta-tag or well-known method the response describes. This only verifies the listing; your website and domain remain yours.
3. POST https://agentwebmap.com/v1/sites/checkhowmuch.sg/verify with {"claim_id": "...", "claim_secret": "..."}.
4. Save the api_key from the answer; it manages the listing (PATCH https://agentwebmap.com/v1/sites/checkhowmuch.sg).
MCP equivalent: tools begin_ownership_claim, then verify_domain, at https://agentwebmap.com/mcp. Docs: https://agentwebmap.com/docs#verify

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