Blk 231 Hougang St 21 is an HDB block in Hougang (completed in 1983, 13 storeys, 102 units). As of Jul 2026, its median resale price over the last 24 months is $1,028,000, about 82% above the Hougang median, from 5 sales. 143 resale transactions have been recorded here since 1990.
Explore this block on the interactive map →| Town | Hougang |
|---|---|
| Completed | 1983 |
| Lease from | 1984 |
| Storeys | 13 |
| Dwelling units | 102 |
| Unit mix (sold) | 4-room ×22 · 5-room ×80 |
| Recorded resales | 143 since 1990 |
| Flat type | Median price | Median $/m² | Sales |
|---|---|---|---|
| 5-Room | $1,028,000 | $7,239/m² | 5 |
Median monthly rent at this block: $3,700/mo (3 rental contracts, last 12 months).
Estimated gross rental yield: ~4.3% (Hougang average: ~6.4%) — annual median rent over median resale price, before taxes, fees and vacancy.
On price per square metre, this block is cheaper than 11% of Hougang blocks with recent sales.
For a typical 5-room flat here, our price model estimates $854,887–$956,314 (central estimate $905,600). Recent sales — median $984,876 — sit above that range. The model explains 94% of resale prices with a typical error of ±6%. Indicative only — not an official valuation.
| Year | Median (nominal) | Median (today's $) | Sales |
|---|---|---|---|
| 1990 | $160,000 | $299,538 | 1 |
| 1991 | $126,250 | $228,494 | 4 |
| 1992 | $195,000 | $345,176 | 5 |
| 1993 | $170,000 | $294,183 | 5 |
| 1994 | $300,000 | $503,567 | 7 |
| 1995 | $388,000 | $640,235 | 5 |
| 1996 | $495,000 | $805,674 | 4 |
| 1997 | $460,500 | $734,661 | 8 |
| 1998 | $416,500 | $666,277 | 10 |
| 1999 | $379,000 | $606,144 | 12 |
| 2000 | $413,000 | $651,730 | 5 |
| 2001 | $365,000 | $570,206 | 2 |
| 2002 | $371,000 | $581,858 | 2 |
| 2003 | $301,500 | $470,561 | 4 |
| 2004 | $270,000 | $414,468 | 1 |
| 2005 | $266,500 | $407,169 | 6 |
| 2006 | $289,400 | $437,926 | 2 |
| 2007 | $339,500 | $503,122 | 6 |
| 2008 | $458,000 | $636,498 | 1 |
| 2009 | $425,000 | $587,184 | 2 |
| 2010 | $532,500 | $715,467 | 8 |
| 2011 | $530,000 | $676,576 | 3 |
| 2012 | $660,000 | $805,623 | 3 |
| 2013 | $703,000 | $838,295 | 1 |
| 2015 | $734,000 | $870,856 | 4 |
| 2016 | $632,000 | $753,826 | 3 |
| 2017 | $720,000 | $853,864 | 1 |
| 2018 | $778,400 | $919,093 | 2 |
| 2019 | $750,000 | $880,562 | 5 |
| 2020 | $865,000 | $1,017,333 | 1 |
| 2021 | $535,000 | $614,975 | 1 |
| 2022 | $814,000 | $881,627 | 4 |
| 2023 | $615,000 | $635,383 | 5 |
| 2024 | $945,844 | $954,385 | 6 |
| 2025 | $1,028,000 | $1,028,000 | 3 |
| 2026 | $980,000 | $980,000 | 1 |
| Record sale | $1,150,000 (5-Room, 2024-08) |
|---|---|
| First recorded sale | $160,000 (1990-01) |
| Busiest year | 1999 · 12 sales |
| 10-year change (real) | +30% (+2.7%/yr, 2016→2026) |
| Total transacted | $67.9M across 143 sales |
| Month | Flat type | Storey | Area (m²) | Price |
|---|---|---|---|---|
| 2026-01 | 5-Room | 04 TO 06 | 142 | $980,000 |
| 2025-09 | 5-Room | 10 TO 12 | 142 | $1,028,000 |
| 2025-05 | 5-Room | 01 TO 03 | 140 | $990,000 |
| 2025-02 | 5-Room | 07 TO 09 | 140 | $1,070,888 |
| 2024-08 | 5-Room | 10 TO 12 | 142 | $1,150,000 |
| 2024-06 | 5-Room | 10 TO 12 | 142 | $1,088,000 |
| 2024-04 | 5-Room | 04 TO 06 | 140 | $900,000 |
| 2024-04 | 5-Room | 04 TO 06 | 142 | $991,688 |
| 2024-03 | 5-Room | 01 TO 03 | 142 | $900,000 |
| 2024-02 | 4-Room | 10 TO 12 | 103 | $585,000 |
| 2023-11 | 4-Room | 10 TO 12 | 109 | $600,000 |
| 2023-11 | 4-Room | 07 TO 09 | 109 | $615,000 |
| 2023-10 | 4-Room | 13 TO 15 | 109 | $620,000 |
| 2023-08 | 4-Room | 01 TO 03 | 103 | $518,000 |
| 2023-02 | 5-Room | 07 TO 09 | 140 | $958,000 |
| 2022-11 | 5-Room | 01 TO 03 | 142 | $860,000 |
| 2022-10 | 5-Room | 04 TO 06 | 142 | $818,000 |
| 2022-09 | 5-Room | 04 TO 06 | 142 | $800,000 |
| 2022-09 | 5-Room | 04 TO 06 | 152 | $810,000 |
| 2021-03 | 4-Room | 07 TO 09 | 109 | $535,000 |
| Block | Median (24 mo) | Median $/m² |
|---|---|---|
| 1. Blk 221 | $1,310,000 | $8,799/m² |
| 2. Blk 222 | $1,241,444 | $7,958/m² |
| 3. Blk 237 | $1,100,000 | $7,333/m² |
| 4. Blk 235 | $1,085,000 | $7,000/m² |
| 5. Blk 231 | $1,028,000 | $7,239/m² |
| 6. Blk 233 | $1,000,000 | $7,194/m² |
| 7. Blk 220 | $698,444 | $6,652/m² |
| 8. Blk 211 | $560,000 | $7,563/m² |
The median resale price over the last 24 months is $1,028,000 (5 sales, as of Jul 2026). See the by-type table above for 3-room vs 4-room medians.
For a typical 5-room flat here, our price model estimates $854,887–$956,314 (central estimate $905,600). Recent sales — median $984,876 — sit above that range.
The median monthly rent is $3,700/mo over the last 12 months (3 contracts).
The block was completed in 1983 and its 99-year lease runs from 1984.