The block
- Completed
- 1996
- Lease
- From 1997, ends 2096. About 69 years left
- Storeys
- 8
- Flats
- 87: 66 4-room, 21 5-room
- Postal code
- Singapore 550509
- Nearest MRT
- Kovan MRT, about 26 min walk (1.6 km)
- Town
- Serangoon
- In the block
- shops
Resale prices at Blk 509 Serangoon North Avenue 4
| Flat type | 2024 | 2025 | 2026 | Serangoon median |
|---|---|---|---|---|
| 4-room | S$600,000 | S$623,000 | S$660,000 | S$660,000 |
| 5-room | S$690,000 | - | - | S$830,000 |
Median price by year of registration.
What is my flat at Blk 509 Serangoon North Avenue 4 worth?
Pick your flat type and floor for an instant range based on this block's own resales.
A guide only. Condition, facing, corner units and renovation can move the price 5 to 10% either way.
Latest sales
| Month | Type | Storey | Size | Price |
|---|---|---|---|---|
| Jan 2026 | 4-room Model A | 04 to 06 | 101 sqm 1,087 sqft | S$660,000 S$607 psf |
| Nov 2025 | 4-room Model A | 04 to 06 | 101 sqm 1,087 sqft | S$610,000 S$561 psf |
| Jul 2025 | 4-room Model A | 01 to 03 | 101 sqm 1,087 sqft | S$623,000 S$573 psf |
| Jun 2025 | 4-room Model A | 07 to 09 | 102 sqm 1,098 sqft | S$646,888 S$589 psf |
| Apr 2024 | 4-room Model A | 04 to 06 | 101 sqm 1,087 sqft | S$600,000 S$552 psf |
| Apr 2024 | 5-room Improved | 04 to 06 | 120 sqm 1,292 sqft | S$690,000 S$534 psf |
Rent at Blk 509 Serangoon North Avenue 4
At these figures a 4-room flat here earns a gross yield of about 6.2% before property tax and other costs.
Whole-flat rentals approved by HDB since Oct 2024. Rooms let out separately aren't included.
Flat layouts at Blk 509 Serangoon North Avenue 4
HDB records the flat model of every resale. These are the layouts sold here, with the typical size.
| Flat type | Model | Typical size | Sales |
|---|---|---|---|
| 4-room | Model A | 101 sqm (1,087 sqft) | 5 |
| 5-room | Improved | 120 sqm (1,292 sqft) | 1 |
Model names come from HDB. "Improved", "New Generation" and "Model A" flats of the same type can differ by 10 sqm or more, so compare sizes, not just room counts.
Living at Blk 509 Serangoon North Avenue 4
MRT
- Kovan MRT1.6 km, about 26 min walk
- Hougang MRT1.8 km, about 29 min walk
Hawker centres
- Ci Yuan Hawker Centre840 m, 40 food stalls
- Chomp Chomp Food Centre1.4 km, 36 food stalls
- Serangoon Garden Market1.4 km, 46 food stalls
Car park
| Car park | Type | Free parking | Night parking | Gantry |
|---|---|---|---|---|
| SE35 140 m away | Surface | Free on Sundays and public holidays, 7am to 10.30pm | No | 4.5 m |
| SE37 150 m away | Surface | Free on Sundays and public holidays, 7am to 10.30pm | No | 4.5 m |
From HDB's car park list. The nearest HDB car parks to the block.
1-minute quizzes for owners at Blk 509 Serangoon North Avenue 4
What is your flat at Blk 509 Serangoon North Avenue 4 worth?
Send us your floor and flat type. We'll reply with a valuation range based on the latest sales here and at nearby blocks, and what a sale would leave you after your loan and CPF refund.
Common questions
How much is a 4-room flat at Blk 509 Serangoon North Avenue 4?
4-room flats at Blk 509 Serangoon North Avenue 4 sold for a median S$635,000 in the last 12 months, or about S$584 per square foot. The range was S$610,000 to S$660,000. Floor level, condition and the remaining lease explain most of the gap.
How many years are left on the lease at Blk 509 Serangoon North Avenue 4?
The lease started in 1997 and runs for 99 years to 2096, so about 69 years are left. Banks and CPF limit how much a buyer can borrow and use once fewer than 60 years remain, which affects who can buy.
How much rent can I get at Blk 509 Serangoon North Avenue 4?
HDB approved 3 4-room rentals here in the last 12 months, at a median S$3,300 a month (S$3,250 to S$3,400). See more in the HDB rental rates checker.
What is the postal code of Blk 509 Serangoon North Avenue 4?
The postal code of Blk 509 Serangoon North Avenue 4 is Singapore 550509.
What is the nearest MRT station to Blk 509 Serangoon North Avenue 4?
Kovan MRT station is about 1.6 km away, roughly 26 minutes on foot. Hougang MRT is the next closest, about 1.8 km away.
Where do residents of Blk 509 Serangoon North Avenue 4 park?
Surface car park SE35, about 140 m away: Free on Sundays and public holidays, 7am to 10.30pm, gantry height 4.5 m. Surface car park SE37, about 150 m away: Free on Sundays and public holidays, 7am to 10.30pm, gantry height 4.5 m.
What is my flat at Blk 509 Serangoon North Avenue 4 worth?
Recent sales at the block are the best guide, adjusted for your floor, facing and condition. Send us your unit and we'll reply with a valuation range on WhatsApp.
Other blocks on Serangoon North Avenue 4
- Blk 5005-room S$745,000
- Blk 5015-room S$768,000
- Blk 5025-room S$778,000
- Blk 5045-room S$660,000
- Blk 5055-room S$810,000
- Blk 506Executive S$1,145,000
- Blk 506AExecutive S$1,130,000
- Blk 506BExecutive S$970,000
- Blk 5075-room S$920,000
- Blk 5085-room S$858,000
- Blk 5104-room S$587,444
- Blk 5114-room S$656,500
- Blk 5124-room S$588,844
- Blk 5144-room S$578,000
- Blk 5154-room S$651,000
- Blk 516Executive S$941,000
- Blk 5174-room S$678,000
- Blk 5185-room S$784,000
- Blk 519Executive S$1,124,584
- Blk 520Executive S$1,080,000
- Blk 521
- Blk 5224-room S$715,000
- Blk 5235-room S$825,000
- Blk 5244-room S$650,000
Blocks nearby
- Blk 638 Hougang Avenue 8300 m · Executive S$914,000
- Blk 634 Hougang Avenue 8320 m · Executive S$1,000,000
- Blk 637 Hougang Avenue 8360 m · 4-room S$520,000
- Blk 139 Serangoon North Avenue 2360 m · 4-room S$595,000
- Blk 636 Hougang Avenue 8370 m · 4-room S$608,500
- Blk 154 Serangoon North Avenue 1370 m · 3-room S$425,000
- Blk 151 Serangoon North Avenue 2370 m · 3-room S$442,500
- Blk 635 Hougang Avenue 8380 m · 4-room S$592,500
All HDB blocks in Serangoon · All towns
Source: HDB resale flat prices, renting out of flats and HDB property information, from data.gov.sg. Resales from Oct 2023 to Oct 2026. Prices are what buyers paid; your flat's value depends on its floor, facing, condition and lease.