Block 121 Serangoon Nth Ave 1
121 Serangoon Nth Ave 1, Singapore 550121
Block 121 Serangoon Nth Ave 1 is an HDB block in Serangoon, completed in 1984, with 96 dwelling units. 5-Room flats have recently resold around S$555k (121 sqm), from 110 resales on record. The lease has approximately 60 years remaining.
What are the key facts about Block 121 Serangoon Nth Ave 1?
Block 121 Serangoon Nth Ave 1 is an HDB block in Serangoon, completed in 1984, with 96 dwelling units.
- Town
- Serangoon
- Planning area
- Serangoon
- Completed
- 1984
- Storeys
- 13
- Total units
- 96
- Market segment
- OCR
- Median resale
- S$555k
- Last transacted
- Mar 2025
- Remaining lease
- ≈ 60 years
What are resale prices at Block 121 Serangoon Nth Ave 1?
5-Room flats have recently resold around S$555k (S$426 psf), from 110 resales on record (HDB caveat data).
| Flat type | Resales | Median price | Size | PSF |
|---|---|---|---|---|
| 4-Room | 10 | S$203,000recent | 99 sqm | S$190 psf |
| 5-Room | 100 | S$555,000recent | 121 sqm | S$426 psf |
“Recent” medians use the latest transactions; for older blocks the all-time median spans 30+ years and understates today’s price. Source: HDB resale caveats, through Mar 2025.
What has recently sold at Block 121 Serangoon Nth Ave 1?
Block 121 Serangoon Nth Ave 1 has 110 recorded resales; the most recent transacted at S$660,000 in Mar 2025 (HDB caveat data).
| Date | Flat type | Storey | Size | Price |
|---|---|---|---|---|
| Mar 2025 | 5-Room | 01 TO 03 | 121 sqm | S$660,000 |
| Jan 2025 | 5-Room | 07 TO 09 | 125 sqm | S$725,000 |
| Dec 2024 | 5-Room | 10 TO 12 | 121 sqm | S$723,000 |
| Dec 2024 | 5-Room | 10 TO 12 | 123 sqm | S$735,000 |
| May 2023 | 5-Room | 07 TO 09 | 123 sqm | S$648,000 |
| Feb 2023 | 5-Room | 10 TO 12 | 121 sqm | S$650,000 |
| Aug 2022 | 5-Room | 04 TO 06 | 121 sqm | S$555,000 |
| Jun 2021 | 5-Room | 07 TO 09 | 121 sqm | S$528,000 |
| Jul 2020 | 5-Room | 10 TO 12 | 121 sqm | S$490,000 |
| Dec 2019 | 5-Room | 07 TO 09 | 125 sqm | S$483,000 |
| Oct 2019 | 5-Room | 07 TO 09 | 123 sqm | S$490,000 |
| Jul 2019 | 5-Room | 01 TO 03 | 121 sqm | S$433,500 |
What flat types are in Block 121 Serangoon Nth Ave 1?
Block 121 Serangoon Nth Ave 1 has 96 units, mostly 5-Room flats.
Unit stock by flat type, from the HDB property information dataset.
How far is Block 121 Serangoon Nth Ave 1 from MRT and schools?
5 schools are within 1 km, including 2 primary schools.
Schools nearby
Flats within 1 km of a primary school qualify for Primary 1 (P1) registration priority.
- Serangoon Garden Secondary SchoolSecondary schoolwithin 1 km348 m
- Zhonghua Primary SchoolPrimary schoolwithin 1 km · P1 priority768 m
- Rosyth SchoolPrimary schoolwithin 1 km · P1 priority781 m
- Bowen Secondary SchoolSecondary schoolwithin 1 km805 m
- Peicai Secondary SchoolSecondary schoolwithin 1 km837 m
- Chij Our Lady Of Good CounselPrimary school1.3 km
- Xinmin Primary SchoolPrimary school1.4 km
- Xinmin Secondary SchoolSecondary school1.4 km
Shops, food & parks
Straight-line distances from the block. Source: PropKaki amenities data.
What does it cost to buy a flat at Block 121 Serangoon Nth Ave 1?
Buying a flat at Block 121 Serangoon Nth Ave 1 (~S$555k) needs about S$4,424/mo in income and S$2,084/mo in repayments, after S$11,250 stamp duty and a S$139k downpayment.
Illustrative, for a buyer at the recent median resale price (S$555k) — 25% downpayment (bank-loan basis), 25-year loan at 3.5% p.a. Rates as of May 2026. Run it for your own profile →
Buyer's Stamp Duty
S$11,250
BSD, tiered
Downpayment (25%)
S$139k
cash + CPF
Monthly instalment
S$2,084/mo
25y @ 3.5%
Income required
S$4,424/mo
MSR/TDSR @ stress rate
First-time HDB buyers pay no Additional Buyer’s Stamp Duty (ABSD) and may qualify for CPF Housing Grants of up to S$80,000+, which lower the cash required — these are not included above. An HDB concessionary loan also allows a smaller downpayment.
Frequently asked questions about Block 121 Serangoon Nth Ave 1
What is the resale price at Block 121 Serangoon Nth Ave 1?⌄
5-Room flats at Block 121 Serangoon Nth Ave 1 have recently resold around S$555k (121 sqm), based on HDB resale caveats. Resale prices vary by flat type, floor and remaining lease.
How much are flats at Block 121 Serangoon Nth Ave 1 by flat type?⌄
4-Room ≈ S$203k; 5-Room ≈ S$555k. Figures are median resale prices from HDB caveats.
How many years are left on the lease at Block 121 Serangoon Nth Ave 1?⌄
Block 121 Serangoon Nth Ave 1 has approximately 60 years left on its 99-year lease (completed 1984). This figure is taken from the most recent transacted flat.
How many units are in Block 121 Serangoon Nth Ave 1?⌄
Block 121 Serangoon Nth Ave 1 has 96 dwelling units across up to 13 storeys, mostly 5 room flats.
Which primary schools are within 1 km of Block 121 Serangoon Nth Ave 1?⌄
Zhonghua Primary School, Rosyth School are within 1 km of Block 121 Serangoon Nth Ave 1 — flats within 1 km of a primary school qualify for Primary 1 (P1) registration priority.
Is Block 121 Serangoon Nth Ave 1 a good place to buy an HDB resale flat?⌄
Block 121 Serangoon Nth Ave 1 sits in Serangoon, in the Serangoon planning area. Whether it suits you depends on your budget, the flat type, the remaining lease (≈60 years) and proximity to MRT and schools — all of which are summarised on this page from HDB resale data.
