Block 521 Serangoon Nth Ave 4
521 Serangoon Nth Ave 4, Singapore 550521
Block 521 Serangoon Nth Ave 4 is an HDB block in Serangoon, completed in 1991, with 77 dwelling units. 4-Room flats have recently resold around S$443k (106 sqm), from 88 resales on record. The lease has approximately 68 years remaining.
What are the key facts about Block 521 Serangoon Nth Ave 4?
Block 521 Serangoon Nth Ave 4 is an HDB block in Serangoon, completed in 1991, with 77 dwelling units.
- Town
- Serangoon
- Planning area
- Serangoon
- Completed
- 1991
- Storeys
- 12
- Total units
- 77
- Market segment
- OCR
- Median resale
- S$443k
- Last transacted
- Aug 2023
- Remaining lease
- ≈ 68 years
What are resale prices at Block 521 Serangoon Nth Ave 4?
4-Room flats have recently resold around S$443k (S$381 psf), from 88 resales on record (HDB caveat data).
| Flat type | Resales | Median price | Size | PSF |
|---|---|---|---|---|
| 4-Room | 63 | S$420,000recent | 106 sqm | S$368 psf |
| 5-Room | 25 | S$485,000recent | 122 sqm | S$366 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 Aug 2023.
What has recently sold at Block 521 Serangoon Nth Ave 4?
Block 521 Serangoon Nth Ave 4 has 88 recorded resales; the most recent transacted at S$558,000 in Aug 2023 (HDB caveat data).
| Date | Flat type | Storey | Size | Price |
|---|---|---|---|---|
| Aug 2023 | 4-Room | 04 TO 06 | 106 sqm | S$558,000 |
| May 2023 | 4-Room | 04 TO 06 | 106 sqm | S$530,000 |
| Apr 2022 | 4-Room | 01 TO 03 | 106 sqm | S$410,000 |
| Apr 2022 | 4-Room | 01 TO 03 | 103 sqm | S$463,000 |
| Jan 2022 | 4-Room | 01 TO 03 | 103 sqm | S$465,000 |
| Jun 2021 | 4-Room | 10 TO 12 | 106 sqm | S$480,000 |
| Apr 2021 | 4-Room | 04 TO 06 | 106 sqm | S$410,000 |
| Jan 2020 | 4-Room | 01 TO 03 | 106 sqm | S$385,000 |
| Feb 2019 | 4-Room | 07 TO 09 | 106 sqm | S$438,000 |
| Feb 2019 | 4-Room | 01 TO 03 | 106 sqm | S$330,000 |
| Apr 2018 | 5-Room | 10 TO 12 | 122 sqm | S$500,000 |
| Mar 2018 | 5-Room | 01 TO 03 | 123 sqm | S$443,000 |
What flat types are in Block 521 Serangoon Nth Ave 4?
Block 521 Serangoon Nth Ave 4 has 77 units, mostly 4-Room flats.
Unit stock by flat type, from the HDB property information dataset.
How far is Block 521 Serangoon Nth Ave 4 from MRT and schools?
4 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.
- Rosyth SchoolPrimary schoolwithin 1 km · P1 priority202 m
- Bowen Secondary SchoolSecondary schoolwithin 1 km593 m
- Serangoon Garden Secondary SchoolSecondary schoolwithin 1 km629 m
- Hougang Primary SchoolPrimary schoolwithin 1 km · P1 priority953 m
- Xinmin Secondary SchoolSecondary school1.1 km
- Xinmin Primary SchoolPrimary school1.1 km
- Hougang Secondary SchoolSecondary school1.1 km
- Yio Chu Kang Primary SchoolPrimary school1.5 km
Shops, food & parks
Straight-line distances from the block. Source: PropKaki amenities data.
What does it cost to buy a flat at Block 521 Serangoon Nth Ave 4?
Buying a flat at Block 521 Serangoon Nth Ave 4 (~S$443k) needs about S$3,531/mo in income and S$1,663/mo in repayments, after S$7,890 stamp duty and a S$111k downpayment.
Illustrative, for a buyer at the recent median resale price (S$443k) — 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$7,890
BSD, tiered
Downpayment (25%)
S$111k
cash + CPF
Monthly instalment
S$1,663/mo
25y @ 3.5%
Income required
S$3,531/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 521 Serangoon Nth Ave 4
What is the resale price at Block 521 Serangoon Nth Ave 4?⌄
4-Room flats at Block 521 Serangoon Nth Ave 4 have recently resold around S$443k (106 sqm), based on HDB resale caveats. Resale prices vary by flat type, floor and remaining lease.
How much are flats at Block 521 Serangoon Nth Ave 4 by flat type?⌄
4-Room ≈ S$420k; 5-Room ≈ S$485k. Figures are median resale prices from HDB caveats.
How many years are left on the lease at Block 521 Serangoon Nth Ave 4?⌄
Block 521 Serangoon Nth Ave 4 has approximately 68 years left on its 99-year lease (completed 1991). This figure is taken from the most recent transacted flat.
How many units are in Block 521 Serangoon Nth Ave 4?⌄
Block 521 Serangoon Nth Ave 4 has 77 dwelling units across up to 12 storeys, mostly 4 room flats.
Which primary schools are within 1 km of Block 521 Serangoon Nth Ave 4?⌄
Rosyth School, Hougang Primary School are within 1 km of Block 521 Serangoon Nth Ave 4 — flats within 1 km of a primary school qualify for Primary 1 (P1) registration priority.
Is Block 521 Serangoon Nth Ave 4 a good place to buy an HDB resale flat?⌄
Block 521 Serangoon Nth Ave 4 sits in Serangoon, in the Serangoon planning area. Whether it suits you depends on your budget, the flat type, the remaining lease (≈68 years) and proximity to MRT and schools — all of which are summarised on this page from HDB resale data.
