Block 221 Serangoon Ave 4
221 Serangoon Ave 4, Singapore 550221
Block 221 Serangoon Ave 4 is an HDB block in Serangoon, completed in 1984, with 157 dwelling units. Across 240 resales on record, 3-Room flats have recently resold around S$490k (S$610 psf, 67 sqm). The lease has approximately 57 years remaining.
What are the key facts about Block 221 Serangoon Ave 4?
Block 221 Serangoon Ave 4 is an HDB block in Serangoon, completed in 1984, with 157 dwelling units.
- Town
- Serangoon
- Planning area
- Serangoon
- Completed
- 1984
- Storeys
- 12
- Total units
- 157
- Flat model
- New Generation · Adjoined Flat
- Market segment
- OCR
- Median resale
- S$490k
- Last transacted
- Jul 2026
- Remaining lease
- ≈ 57 years
What are resale prices at Block 221 Serangoon Ave 4?
3-Room flats have recently resold around S$490k (S$610 psf), from 240 resales on record (HDB caveat data).
| Flat type | Resales | Median price | Size | PSF |
|---|---|---|---|---|
| 3-Room | 172 | S$440,000recent | 67 sqm | S$610 psf |
| 4-Room | 65 | S$439,888recent | 94 sqm | S$435 psf |
| 5-Room | 3 | S$651,500recent | 144 sqm | S$420 psf |
Live now: 6 flats listed for sale at this block (median asking S$520k) and 2 for rent — search all listings.
“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 Jul 2026.
What rent and yield does Block 221 Serangoon Ave 4 get?
Flats at Block 221 Serangoon Ave 4 have recently sublet for a median of S$3,000/mo, an indicative gross rental yield of about 7.3% (from 24 recent rental contracts).
Median rent
S$3,000/mo
24 recent contracts
Gross rental yield
7.3%
indicative, gross
Annual rent
S$36,000
median × 12 months
| Flat type | Contracts | Median rent |
|---|---|---|
| 4-Room | 15 | S$3,000/mo |
| 3-Room | 22 | S$2,300/mo |
HDB subletting requires the flat owner to have met the 5-year Minimum Occupation Period (MOP), so the rental sample per block is small — treat the yield as indicative. Latest contract Jun 2026. Source: HDB rental (subletting) data.
What has recently sold at Block 221 Serangoon Ave 4?
Block 221 Serangoon Ave 4 has 240 recorded resales; the most recent transacted at S$490,000 in Jul 2026 (HDB caveat data).
| Date | Flat type | Storey | Size | Price |
|---|---|---|---|---|
| Jul 2026 | 3-Room | 10 TO 12 | 67 sqm | S$490,000 |
| Jan 2026 | 3-Room | 07 TO 09 | 67 sqm | S$496,888 |
| Nov 2025 | 4-Room | 07 TO 09 | 92 sqm | S$593,888 |
| Aug 2025 | 3-Room | 07 TO 09 | 67 sqm | S$495,000 |
| Jul 2025 | 3-Room | 04 TO 06 | 71 sqm | S$495,000 |
| Jun 2025 | 3-Room | 07 TO 09 | 67 sqm | S$510,000 |
| Jun 2025 | 3-Room | 10 TO 12 | 67 sqm | S$490,000 |
| Aug 2024 | 3-Room | 01 TO 03 | 71 sqm | S$408,888 |
| Aug 2024 | 3-Room | 10 TO 12 | 67 sqm | S$440,000 |
| Jul 2024 | 4-Room | 10 TO 12 | 99 sqm | S$620,000 |
| Apr 2024 | 3-Room | 04 TO 06 | 67 sqm | S$400,000 |
| Mar 2024 | 3-Room | 01 TO 03 | 67 sqm | S$380,000 |
What flat types are in Block 221 Serangoon Ave 4?
Block 221 Serangoon Ave 4 has 157 units, mostly 3-Room flats of the New Generation / Adjoined Flat model.
Unit stock by flat type, from the HDB property information dataset.
Where is Block 221 Serangoon Ave 4?
Block 221 Serangoon Ave 4 is an HDB block in Serangoon.
Block 221 Serangoon Ave 4 is an HDB block located along Serangoon Ave 4. The block is recorded as completed around 1984, with up to 12 storeys. It has an estimated 157 residential units based on the HDB property information dataset. Flat types in the block include 3-room, 4-room, and 5-room units.
The address is Block 221 Serangoon Ave 4, Singapore 550221. It is part of District 19, Serangoon Garden / Hougang / Punggol, the Serangoon planning area. The block falls within the North-East Region and the OCR market segment.
The nearest rail connection is Serangoon MRT, approximately 952m away, around 15 minutes on foot. Nearby amenities include NEX for shopping, THONG CHEW FOOD INDUSTRIES PTE LTD for groceries, Serangoon Garden Market for food options, Colchester Grove Os for greenery and recreation, and Braddell Heights Community Club for community facilities.
How far is Block 221 Serangoon Ave 4 from MRT and schools?
The nearest MRT/LRT to Block 221 Serangoon Ave 4 is Serangoon MRT, about 953 m away (~15 min walk). 3 schools are within 1 km, including 2 primary schools.
Getting around
- Serangoon MRT953 m · ~15 min
Schools nearby
Flats within 1 km of a primary school qualify for Primary 1 (P1) registration priority.
- Peicai Secondary SchoolSecondary schoolwithin 1 km204 m
- Zhonghua Primary SchoolPrimary schoolwithin 1 km · P1 priority256 m
- Chij Our Lady Of Good CounselPrimary schoolwithin 1 km · P1 priority888 m
- Nanyang Junior CollegeJunior college1.1 km
- Serangoon Garden Secondary SchoolSecondary school1.2 km
- Yangzheng Primary SchoolPrimary school1.2 km
- Zhonghua Secondary SchoolSecondary school1.2 km
- Bowen 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 221 Serangoon Ave 4?
Buying a flat at Block 221 Serangoon Ave 4 (~S$490k) needs about S$3,906/mo in income and S$1,840/mo in repayments, after S$9,300 stamp duty and a S$123k downpayment.
Illustrative, for a buyer at the recent median resale price (S$490k) — 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$9,300
BSD, tiered
Downpayment (25%)
S$123k
cash + CPF
Monthly instalment
S$1,840/mo
25y @ 3.5%
Income required
S$3,906/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.
Wondering whether it will hold its value? See do HDB flats actually make money? →
Eyeing Block 221 Serangoon Ave 4? Ask what it's worth.
Recent transacted prices, what's nearby, and whether an asking price is fair.
PropKakiRecent sales at Block 221 Serangoon Ave 4 land close to the town median — fair value, no big premium.
Frequently asked questions about Block 221 Serangoon Ave 4
How much does a 3-Room flat at Block 221 Serangoon Ave 4 cost?⌄
3-Room flats at Block 221 Serangoon Ave 4 have recently resold for a median of about S$490k (S$610 psf), from 240 resales on record (HDB caveats). The exact price depends on the flat type, floor and remaining lease.
What are resale prices at Block 221 Serangoon Ave 4 by flat type?⌄
3-Room ≈ S$440k; 4-Room ≈ S$440k; 5-Room ≈ S$652k (median resale, HDB caveats).
Is Block 221 Serangoon Ave 4 worth buying given its remaining lease?⌄
Block 221 Serangoon Ave 4 has about 57 years left on its 99-year lease (completed 1984). Below ~60 years, CPF usage and the maximum loan start to taper with the buyer's age, so check financing before committing. The figure is taken from the most recent transacted flat.
What is the rental yield at Block 221 Serangoon Ave 4?⌄
Gross rental yield at Block 221 Serangoon Ave 4 is about 7.3%, based on a median subletting rent of about S$3,000/mo against a resale price of about S$490k. HDB subletting requires the owner to have met the 5-year MOP, so the per-block sample is small — treat this as indicative.
How much do I need to earn to buy a flat at Block 221 Serangoon Ave 4?⌄
For a flat at about S$490k on a 25-year HDB-style loan, you'd need roughly S$3,906/mo in household income, with repayments around S$1,840/mo after a S$123k downpayment. First-timer grants of up to S$80,000+ (not included) lower the cash needed.
What is the nearest MRT to Block 221 Serangoon Ave 4?⌄
The nearest MRT/LRT station to Block 221 Serangoon Ave 4 is Serangoon MRT, about 953 m away (~15 min walk).
Which primary schools are within 1 km of Block 221 Serangoon Ave 4?⌄
Zhonghua Primary School, Chij Our Lady Of Good Counsel are within 1 km of Block 221 Serangoon Ave 4 — flats within 1 km of a primary school qualify for Primary 1 (P1) registration priority.