HDB block scorecard · rubric v0.3
Blk 321 Ubi Ave 1
HDB block scorecard · Geylang · 8 resales 2017-02–2026-09
Carried by price vs town peers (3.0/5); capped by transaction liquidity (2.0/5).
Best for: Short-horizon buyers pricing the lease decay in, eyes open.
the headline rubric: price, trend, liquidity, location, lease
59th pctile in Geylang · 72th pctile of all 8905 blocks islandwide
+6.4%/yr realized · 4 resales/36mo · ~58yr lease left
The rubric
How we rate →Price vs Town Peers
20%computed3.0/5639
$639 median psf = 59th pctile of 222 rated Geylang blocks (cheaper=better)
Realized Price Trend
20%computed3.0/5+6.4%/yr
block trend +6.4%/yr = 59th pctile of 8692 blocks (first-12mo vs last-12mo, annualized)
Transaction Liquidity
15%computed2.0/54 resales / 36mo
3yr resale volume; block med ~7 — single-block markets are thin
Location & Connectivity
15%manual · awaiting data3.0/5Awaiting data — neutral placeholder. no geocode yet -- run location.py --hdb-blocks
Lease Runway
15%computed2.0/5~58yr left
~58yr remaining (99yr grant); block universe med ~66yr; CPF/loan limits tighten as runway shrinks
Flat Mix
5%partial2.5/50% 4RM+, avg 64sqm
share of 4-room-and-larger resales (family stock holds demand) — proxy
Sentiment Signal
10%manual · awaiting data3.0/5Awaiting data — neutral placeholder. manual aggregated overlay (Tier3 fragile layer)
Strongest: Price vs Town Peers · Weakest: Transaction Liquidity. Each category is scored 0–5 against public anchors, multiplied by its weight and scaled to 100.
Key facts
- Median resale psf
- $639 psf
- Resales (36 mo)
- 4
- Town
- Geylang
- Remaining lease
- ~58yr
- Avg flat size
- 64 sqm
- Nearest MRT
- not yet computed
- Data through
- Sep 2026
Data coverage
72%72% of this rating’s weight is measured from data. The rest is a clearly-labelled placeholder or estimate — never silently blended in.
- computed
- — fully measured from source data (full coverage credit)
- partial
- — real but proxy signal (half credit)
- inferred
- — estimate, dampened toward neutral (no credit)
- manual
- — neutral 3.0 placeholder awaiting data (no credit)
Price history
median $psf by monthMedian resale $psf per month for this single block, from HDB resale registrations. A block trades thinly, so the series is sparse — the line breaks across months with no recorded resale rather than bridging the gap.
- median resale $psf
- transactions / month
- trend extrapolation — not a forecast