Blk 121 Serangoon North Avenue 1 — HDB resale prices
HDB resale prices, Serangoon · 5-Room · built 1984
median resale price, last 24 months
4 sales in that window · as of Sep 2026
How it compares
Blk 121 Serangoon North Avenue 1 is an HDB block in Serangoon (completed in 1984, 13 storeys, 96 units). As of Sep 2026, its median resale price over the last 24 months is $724,000, about 8% above the Serangoon median, from 4 sales. 110 resale transactions have been recorded here since 1990.
Price by year
At a glance
Unit mix (sold): 4-room ×18 · 5-room ×78
Prices by flat type — last 24 months (as of Sep 2026)
Median monthly rent at this block: $3,100/mo (1 rental contracts, last 12 months).
Estimated gross rental yield: ~5.1% (Serangoon average: ~6.3%) — annual median rent over median resale price, before taxes, fees and vacancy.
On price per square metre, this block is cheaper than 96% of Serangoon blocks with recent sales.
What the price model says
For a typical 5-room flat here, our price model estimates $706,392–$789,726 (central estimate $748,059). Recent sales — median $671,543 — sit below that range. The model explains 94% of resale prices with a typical error of ±6%. Indicative only — not an official valuation.
Median resale price by year
| Year | Median (nominal) | Median (today's $) | Sales |
|---|---|---|---|
| 1990 | $140,000 | $262,095 | 6 |
| 1991 | $109,500 | $198,179 | 2 |
| 1992 | $163,000 | $288,532 | 3 |
| 1993 | $278,500 | $481,941 | 2 |
| 1994 | $290,000 | $486,781 | 1 |
| 1995 | $342,500 | $565,157 | 8 |
| 1996 | $393,000 | $639,657 | 9 |
| 1997 | $422,000 | $673,240 | 5 |
| 1998 | $370,000 | $591,891 | 5 |
| 1999 | $332,500 | $531,775 | 8 |
| 2000 | $367,500 | $579,930 | 2 |
| 2001 | $269,000 | $420,234 | 2 |
| 2002 | $303,000 | $475,210 | 6 |
| 2003 | $303,000 | $472,902 | 1 |
| 2004 | $271,500 | $416,771 | 4 |
| 2005 | $267,500 | $408,697 | 6 |
| 2006 | $260,000 | $393,437 | 5 |
| 2007 | $285,000 | $422,356 | 1 |
| 2008 | $337,000 | $468,340 | 5 |
| 2009 | $361,500 | $499,451 | 4 |
| 2010 | $407,000 | $546,845 | 1 |
| 2011 | $465,000 | $593,600 | 1 |
| 2012 | $500,000 | $610,320 | 1 |
| 2013 | $401,000 | $478,174 | 1 |
| 2014 | $450,000 | $531,112 | 1 |
| 2015 | $478,000 | $567,124 | 3 |
| 2016 | $488,000 | $582,068 | 1 |
| 2017 | $500,000 | $592,961 | 1 |
| 2018 | $472,000 | $557,312 | 3 |
| 2019 | $483,000 | $567,082 | 3 |
| 2020 | $490,000 | $576,293 | 1 |
| 2021 | $528,000 | $606,928 | 1 |
| 2022 | $555,000 | $601,110 | 1 |
| 2023 | $649,000 | $670,510 | 2 |
| 2024 | $729,000 | $735,583 | 2 |
| 2025 | $692,500 | $692,500 | 2 |
Records
| Record sale | $735,000 (5-Room, 2024-12) |
|---|---|
| First recorded sale | $140,000 (1990-03) |
| Busiest year | 1996 · 9 sales |
| 10-year change (real) | +22% (+2.0%/yr, 2015→2025) |
| Total transacted | $39.1M across 110 sales |
Recent resale transactions
| Month | Flat type | Storey | Area | Price |
|---|---|---|---|---|
| 2025-03 | 5-Room | 01–03 | 121 m² | $660,000 |
| 2025-01 | 5-Room | 07–09 | 125 m² | $725,000 |
| 2024-12 | 5-Room | 10–12 | 123 m² | $735,000 |
| 2024-12 | 5-Room | 10–12 | 121 m² | $723,000 |
| 2023-05 | 5-Room | 07–09 | 123 m² | $648,000 |
| 2023-02 | 5-Room | 10–12 | 121 m² | $650,000 |
| 2022-08 | 5-Room | 04–06 | 121 m² | $555,000 |
| 2021-06 | 5-Room | 07–09 | 121 m² | $528,000 |
| 2020-07 | 5-Room | 10–12 | 121 m² | $490,000 |
| 2019-12 | 5-Room | 07–09 | 125 m² | $483,000 |
| 2019-10 | 5-Room | 07–09 | 123 m² | $490,000 |
| 2019-07 | 5-Room | 01–03 | 121 m² | $433,500 |
| 2018-09 | 5-Room | 07–09 | 121 m² | $472,000 |
| 2018-08 | 5-Room | 01–03 | 121 m² | $398,000 |
| 2018-06 | 5-Room | 10–12 | 121 m² | $500,000 |
| 2017-07 | 5-Room | 07–09 | 125 m² | $500,000 |
| 2016-06 | 5-Room | 10–12 | 121 m² | $488,000 |
| 2015-10 | 5-Room | 13–15 | 121 m² | $538,000 |
| 2015-06 | 5-Room | 07–09 | 121 m² | $478,000 |
| 2015-04 | 5-Room | 04–06 | 121 m² | $460,000 |
Serangoon North Avenue 1 blocks ranked by price
Showing the top 15 of 36 priced blocks.
More blocks on Serangoon North Avenue 1
Quick answers
How much does a flat at Blk 121 Serangoon North Avenue 1 cost?
The median resale price over the last 24 months is $724,000 (4 sales, as of Sep 2026). See the by-type table above for 3-room vs 4-room medians.
Is Blk 121 Serangoon North Avenue 1 fairly priced?
For a typical 5-room flat here, our price model estimates $706,392–$789,726 (central estimate $748,059). Recent sales — median $671,543 — sit below that range.
What is the rent at Blk 121 Serangoon North Avenue 1?
The median monthly rent is $3,100/mo over the last 12 months (1 contracts).
How old is Blk 121 Serangoon North Avenue 1?
The block was completed in 1984 and its 99-year lease runs from 1985.