Blk 509 Serangoon North Avenue 4

HDB · Serangoon · Singapore 550509

Completed: 1996
Lease from: 1997 (99 years)
Storeys: 8
Resales since 1990: 82

Lease and eligibility context

About 70 years remain on the 99-year lease, based on its 1997 commencement year. This year-level figure is approximate.

A standard flat completed around 1996 would usually reach its 5-year MOP around 2001. The actual MOP starts from each owner’s key collection date, and special schemes can differ. Check HDB’s rule ↗

Indicative only. Check your dates and eligibility with HDB, CPF and your conveyancing adviser.

87 flats: 66 × 4-room, 21 × 5-room.

Homes available here

One card per home, even when more than one verified agent represents it.

List a property

Your next home could be here.

No active listings yet

When a verified CEA agent publishes a home in this building, it will appear here automatically.

List this property

Estimated value

Indicative building-level values from official sales. They are a starting point, not a valuation. A unit’s floor, size, condition and facing can change its price.

4-room

S$622,283.08

Typical range S$612,389.38–S$650,776.44

See the 20 comparable sales

Sale	Home	Original	Adjusted
Jan 20264 to 6	509 SERANGOON NORTH AVENUE 4same building · 101 sqm	S$660,000market -0.3%	S$658,053.10
Nov 20254 to 6	509 SERANGOON NORTH AVENUE 4same building · 101 sqm	S$610,000market -0.4%	S$607,603.14
Jul 20251 to 3	509 SERANGOON NORTH AVENUE 4same building · 101 sqm	S$623,000market -0.4% · storey +4.8%	S$650,035.25
Jun 20257 to 9	509 SERANGOON NORTH AVENUE 4same building · 102 sqm	S$646,888market -0.0% · storey -4.6%	S$616,940.18
Aug 20264 to 6	511 SERANGOON NORTH AVENUE 4same street · 100 sqm	S$670,000no adjustment	S$670,000
Aug 20264 to 6	523 SERANGOON NORTH AVENUE 4same street · 104 sqm	S$653,000no adjustment	S$653,000
Aug 202610 to 12	534 SERANGOON NORTH AVENUE 4same street · 104 sqm	S$640,000storey -9.0%	S$582,688.02
Aug 202610 to 12	533 SERANGOON NORTH AVENUE 4same street · 104 sqm	S$615,000storey -9.0%	S$559,926.77
Aug 20261 to 3	532 SERANGOON NORTH AVENUE 4same street · 103 sqm	S$608,000storey +4.8%	S$637,199.64
Jul 20264 to 6	522 SERANGOON NORTH AVENUE 4same street · 103 sqm	S$715,000no adjustment	S$715,000
Jul 20267 to 9	533 SERANGOON NORTH AVENUE 4same street · 104 sqm	S$678,888storey -4.6%	S$647,777.99
Jul 20267 to 9	535A SERANGOON NORTH AVENUE 4same street · 104 sqm	S$623,888storey -4.6%	S$595,298.37
Jun 202610 to 12	517 SERANGOON NORTH AVENUE 4same street · 104 sqm	S$678,000storey -9.0%	S$617,285.12
Jun 20264 to 6	540 SERANGOON NORTH AVENUE 4same street · 104 sqm	S$645,000no adjustment	S$645,000
Jun 20264 to 6	532 SERANGOON NORTH AVENUE 4same street · 103 sqm	S$610,000no adjustment	S$610,000
Apr 20267 to 9	511 SERANGOON NORTH AVENUE 4same street · 100 sqm	S$643,000storey -4.6%	S$613,534.56
Mar 20267 to 9	529 SERANGOON NORTH AVENUE 4same street · 108 sqm	S$728,000market -0.3% · storey -4.6%	S$692,590.36
Mar 20264 to 6	540 SERANGOON NORTH AVENUE 4same street · 104 sqm	S$615,000market -0.3%	S$613,185.84
Feb 20264 to 6	538 SERANGOON NORTH AVENUE 4same street · 103 sqm	S$618,000market -0.3%	S$616,176.99
Dec 20257 to 9	518 SERANGOON NORTH AVENUE 4same street · 104 sqm	S$660,000market -0.4% · storey -4.6%	S$627,281.05

Median of the adjusted sales; range is their middle 50%. Older HDB sales are adjusted with the official HDB Resale Price Index. Storey adjustments use observed premiums for the town and flat type. Method building-v1, sales through 2026-09-01.

Prices by flat type

Flat type	Last 12 months	Median price	Median S$ psf	Latest sale
4-room	2 sold	S$610,000	584	S$660,000 in Jan 2026
5-room	None	–	–	S$690,000 in Apr 2024

Price history

Quarterly median sale price. Hover or focus a point for its value.

4-room

Getting around

Kovan MRT StationExit B26 min walk2.2 km
Hougang MRT StationExit C28 min walk2.3 km

Walking routes from OneMap to the nearest exit.

Schools nearby

Primary, within 1 km

Primary, 1 to 2 km

Other schools within 1 km

Approximate straight-line distances from the building. For primary school registration, check the exact distance on OneMap’s school query ↗.

Food & shopping nearby

Hawker centres

Ci Yuan Hawker Centre40 cooked-food stalls830 m
Chomp Chomp Food Centre36 cooked-food stalls1.4 km
Serangoon Garden Market46 cooked-food stalls1.4 km

Shopping malls

Hougang Green Shopping Mall21 HOUGANG STREET 51 HOUGANG GREEN SHOPPING MALL SINGAPORE 5387191.5 km
Icb Shopping Centre6 YIO CHU KANG ROAD ICB SHOPPING CENTRE SINGAPORE 5455211.9 km
Hougang Mall90 HOUGANG AVENUE 10 HOUGANG MALL SINGAPORE 5387662.0 km

Nearest places within 3 km. Approximate straight-line distance from the building. Sources: NEA via data.gov.sg and OneMap.

Location

Latest 30 of 82 sales

Month	Flat type	Storey	Size	Price	S$ psf
Jan 2026	4-roomModel A	4 to 6	101 sqm (1,087 sqft)	S$660,000	607
Nov 2025	4-roomModel A	4 to 6	101 sqm (1,087 sqft)	S$610,000	561
Jul 2025	4-roomModel A	1 to 3	101 sqm (1,087 sqft)	S$623,000	573
Jun 2025	4-roomModel A	7 to 9	102 sqm (1,098 sqft)	S$646,888	589
Apr 2024	5-roomImproved	4 to 6	120 sqm (1,292 sqft)	S$690,000	534
Apr 2024	4-roomModel A	4 to 6	101 sqm (1,087 sqft)	S$600,000	552
Jan 2023	4-roomModel A	4 to 6	102 sqm (1,098 sqft)	S$520,000	474
Dec 2022	4-roomModel A	4 to 6	102 sqm (1,098 sqft)	S$520,000	474
Jan 2021	5-roomImproved	4 to 6	120 sqm (1,292 sqft)	S$535,000	414
Mar 2020	4-roomModel A	1 to 3	102 sqm (1,098 sqft)	S$380,000	346
Jan 2020	5-roomImproved	4 to 6	119 sqm (1,281 sqft)	S$540,000	422
Mar 2019	4-roomModel A	4 to 6	101 sqm (1,087 sqft)	S$400,000	368
Nov 2018	4-roomModel A	1 to 3	102 sqm (1,098 sqft)	S$378,000	344
Aug 2018	5-roomImproved	1 to 3	120 sqm (1,292 sqft)	S$525,000	406
Aug 2018	5-roomImproved	1 to 3	120 sqm (1,292 sqft)	S$476,000	369
Apr 2018	5-roomImproved	4 to 6	120 sqm (1,292 sqft)	S$520,000	403
Mar 2018	4-roomModel A	4 to 6	102 sqm (1,098 sqft)	S$403,000	367
Sep 2017	5-roomImproved	7 to 9	120 sqm (1,292 sqft)	S$510,000	395
Jul 2017	4-roomModel A	1 to 3	101 sqm (1,087 sqft)	S$375,000	345
Jul 2016	4-roomModel A	7 to 9	102 sqm (1,098 sqft)	S$382,888	349
Sep 2015	4-roomModel A	7 to 9	102 sqm (1,098 sqft)	S$418,000	381
Feb 2015	4-roomModel A	1 to 3	102 sqm (1,098 sqft)	S$388,000	353
Dec 2014	4-roomModel A	4 to 6	100 sqm (1,076 sqft)	S$430,000	399
Sep 2014	5-roomImproved	4 to 6	120 sqm (1,292 sqft)	S$475,000	368
Jun 2014	4-roomModel A	4 to 6	100 sqm (1,076 sqft)	S$385,000	358
Feb 2014	5-roomImproved	1 to 3	120 sqm (1,292 sqft)	S$540,000	418
Jul 2013	4-roomModel A	7 to 9	102 sqm (1,098 sqft)	S$465,000	424
Jan 2013	4-roomModel A	1 to 3	102 sqm (1,098 sqft)	S$428,000	390
Nov 2012	4-roomModel A	4 to 6	102 sqm (1,098 sqft)	S$438,000	399
Aug 2012	4-roomModel A	7 to 9	102 sqm (1,098 sqft)	S$440,000	401

HDB publishes a storey range, not the unit number. Sizes include any recess area bought and space added by upgrading. Source: HDB resale flat prices, data.gov.sg.