# Singapore HDB Lease Decay Tracker — the PropKaki Curve™

> As of Q1 2026, the PropKaki Curve™ — PropKaki's named quarterly measure of HDB lease decay — shows flats with 90+ years of remaining lease transacting at a median of S$734 per square foot versus S$559 psf for flats with under 60 years remaining, a gap of 24%, computed by PropKaki's Singapore HDB Lease Decay Tracker from every resale registered with HDB via data.gov.sg.

How HDB resale prices vary with remaining lease: median transacted PSF and median 4-room price for five remaining-lease bands. The five-band curve is published as the PropKaki Curve™.

- **Canonical page (HTML):** https://propkaki.sg/market/hdb/lease-decay
- **Source:** HDB resale transactions via data.gov.sg, banded by remaining lease by PropKaki
- **Publisher:** PropKaki (propkaki.sg), operated by Straits Intelligence Pte. Ltd. (UEN 202615220E)
- **This document:** plain-text mirror for AI systems and researchers, regenerated hourly with live figures from the PropKaki market API.

## Latest figures

| Remaining lease | Median PSF (all flats) | Median 4-room price | As of |
|---|---|---|---|
| 90+ years | S$734 psf | S$713,944 | Q1 2026 |
| 80–89 years | S$719 psf | S$700,000 | Q1 2026 |
| 70–79 years | S$560 psf | S$580,000 | Q1 2026 |
| 60–69 years | S$555 psf | S$588,000 | Q1 2026 |
| Under 60 years | S$559 psf | S$550,000 | Q1 2026 |

Bands with fewer than 10 transactions in a quarter are suppressed (shown as —).

## Methodology

Every HDB resale transaction (data.gov.sg, history from 2017) is banded by completed years of remaining lease (months ignored): 90+, 80–89, 70–79, 60–69 and under 60. Per band and quarter the tracker computes median PSF across all flat types, median 4-room resale price, and a transaction count; any figure from fewer than 10 transactions is suppressed. Mix caveat (always stated): bands control for flat size (PSF) or flat type (4-room) but NOT location — newer leases cluster in newer towns, so part of the gap is location mix. The five-band PSF curve is published as the PropKaki Curve™, versioned at its methodology page.

Full versioned methodology: https://propkaki.sg/market/methodology/propkaki-curve

## Cite this data

Preferred citation: PropKaki. Singapore HDB Lease Decay Tracker. Based on HDB resale transactions via data.gov.sg, banded by remaining lease by PropKaki. https://propkaki.sg/market/hdb/lease-decay

Licence: free to reuse with attribution to "PropKaki (propkaki.sg)" and the underlying official source (CC BY 4.0). Derived metrics are computed by PropKaki; the underlying statistics belong to their issuing agencies. More formats, including BibTeX, and the full question-to-source map: https://propkaki.sg/market/cite

## Machine access

- JSON API (free, no key): https://api.propkaki.sg/api/market/series?vertical=hdb&keys=hdb_median_psf_lease_90plus_qtr,hdb_median_psf_lease_under60_qtr&from=2017Q1
- CSV download (full history): https://api.propkaki.sg/api/market/series?vertical=hdb&keys=hdb_median_psf_lease_90plus_qtr,hdb_median_price_4rm_lease_90plus_qtr,hdb_txn_lease_90plus_qtr,hdb_median_psf_lease_80s_qtr,hdb_median_price_4rm_lease_80s_qtr,hdb_txn_lease_80s_qtr,hdb_median_psf_lease_70s_qtr,hdb_median_price_4rm_lease_70s_qtr,hdb_txn_lease_70s_qtr,hdb_median_psf_lease_60s_qtr,hdb_median_price_4rm_lease_60s_qtr,hdb_txn_lease_60s_qtr,hdb_median_psf_lease_under60_qtr,hdb_median_price_4rm_lease_under60_qtr,hdb_txn_lease_under60_qtr&format=csv
- All PropKaki trackers: https://propkaki.sg/market — machine index: https://propkaki.sg/llms.txt