Blk 421 Serangoon Ctrl

Block 421 Serangoon Central, Serangoon · S550421 · 93 resale transactions since 1993

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4-room

$865k

$765 psf · 1 sale

Typically 105 sqm

5-room

–

No sales in 12 months · last $818k in Mar 2025

12 months to Oct 2026: median price, median $psf and number of sales. “Most” is the middle 80% of prices.

For sale now

$852,000

$754 psf · 105 sqm

Above estimate

4-room · storey 01–05 of 13 · 61 years lease left

Our estimate $776k–$834k · asking 6% above

158 m to Serangoon

Demand32

Rarity0

Last 4-room sale here: $865k, storey 10–12, Apr 2026. Listed 114 days ago. $14k per year of lease left.

Details on HDB Flat Portal ↗

Listed on the HDB Flat Portal. Our estimate, demand and rarity readings are explained on the listings page.

Price history

Each dot is one sale; the line is the median per quarter.

What's a flat here worth?

Block facts

Lease: 99 years from 1989 · 61 years left (ends 2088)
Completed: 1988
Storeys: 13
Flats: 96 (72 × 4-room, 24 × 5-room)
Postal code: Singapore 550421
Nearest station: Serangoon MRT · 160 m (about 3 min walk)
Nearest hawker centre: Woodleigh Village Hawker Centre · 1.1 km

Primary schools nearby

Straight-line distance from the block. For Primary 1 registration, check the exact 1 km and 2 km distance with OneMap's school query.

Within 1 km

Yangzheng Primary School 730 m
Maris Stella High School 870 m

1–2 km

Paya Lebar Methodist Girls' School (Primary) 1.1 km
St. Gabriel's Primary School 1.4 km
Zhonghua Primary School 1.4 km
Cedar Primary School 1.5 km
CHIJ Our Lady Of Good Counsel 1.6 km
Xinghua Primary School 2.0 km

Location

Nearby blocks · 4-room

Block	Distance	Lease left	Median	$psf	Sales
Blk 420 Serangoon Ctrl	50 m	62y	$854k	$754	5
Blk 427 Serangoon Ctrl	90 m	61y	$850k	$731	2
Blk 414 Serangoon Ctrl	90 m	61y	$965k	$793	1
Blk 422 Serangoon Ctrl	100 m	61y	$947k	$779	2
Blk 419 Serangoon Ctrl	100 m	61y	$822k	$727	3
Blk 409 Serangoon Ctrl	110 m	61y	$799k	$747	2
Blk 415 Serangoon Ctrl	130 m	61y	$835k	$825	1
Blk 411 Serangoon Ctrl	140 m	61y	$835k	$745	2

4-room sales over the last 24 months within 1.2 km.

All resale transactions

Month	Type	Storey	sqm	Model	Lease left	Price	$psf
Apr 2026	4-room	10–12	105	Model A	62y	$865,000	$765
Mar 2025	5-room	04–06	121	Improved	63y	$818,000	$628
Oct 2023	4-room	07–09	103	Model A	64y	$770,000	$695
Jul 2023	5-room	04–06	121	Improved	65y	$875,000	$672
Apr 2023	4-room	10–12	113	Model A	65y	$730,000	$600
Sep 2022	4-room	04–06	105	Model A	65y	$680,000	$602
Sep 2022	4-room	07–09	94	New Generation	65y	$627,000	$620
Feb 2022	4-room	13–15	111	Model A	66y	$748,000	$626
Sep 2021	4-room	07–09	103	Model A	66y	$678,000	$612
Jul 2021	4-room	10–12	105	Model A	67y	$640,000	$566
Jul 2020	4-room	04–06	111	Model A	68y	$660,000	$552
Jun 2020	4-room	10–12	103	Model A	68y	$520,000	$469
Jun 2019	4-room	07–09	105	Model A	69y	$635,000	$562
Jan 2019	4-room	10–12	105	Model A	69y	$635,000	$562
Nov 2018	4-room	04–06	103	Model A	69y	$628,000	$566
Nov 2017	4-room	10–12	113	Model A	70y	$700,000	$576
Apr 2016	4-room	07–09	103	Model A	72y	$608,000	$548
Sep 2015	5-room	07–09	121	Improved	72y	$730,000	$560
Jan 2015	4-room	04–06	111	Model A	73y	$525,000	$439
Oct 2014	5-room	10–12	121	Improved	73y	$738,000	$567
Aug 2014	4-room	01–03	105	Model A	73y	$528,000	$467
Jan 2014	4-room	04–06	111	Model A	74y	$575,000	$481
Nov 2013	5-room	10–12	121	Improved	74y	$723,000	$555
Oct 2013	4-room	04–06	105	Model A	74y	$575,000	$509
Jul 2012	4-room	04–06	103	Model A	76y	$552,000	$498
Jan 2012	5-room	01–03	121	Improved	76y	$638,000	$490
Dec 2011	4-room	13–15	111	Model A	76y	$575,000	$481
Jun 2011	4-room	13–15	113	Model A	77y	$550,000	$452
May 2010	4-room	07–09	105	Model A	78y	$448,000	$396
Feb 2010	4-room	10–12	113	Model A	78y	$468,000	$385
Nov 2009	5-room	01–03	121	Improved	78y	$525,000	$403
Nov 2009	4-room	01–03	105	Model A	78y	$388,000	$343
Jul 2009	4-room	04–06	111	Model A	79y	$395,000	$331
Jun 2009	4-room	13–15	113	Model A	79y	$445,000	$366
Jun 2008	5-room	04–06	121	Improved	80y	$420,000	$322
Jan 2008	5-room	13–15	121	Improved	80y	$450,000	$346
Sep 2007	5-room	04–06	121	Improved	80y	$375,000	$288
Apr 2007	4-room	07–09	103	Model A	81y	$280,000	$253
Jun 2006	4-room	04–06	103	Model A	82y	$282,000	$254
Jun 2006	4-room	01–03	105	Model A	82y	$260,000	$230
Jan 2006	4-room	10–12	111	Model A	82y	$280,000	$234
Apr 2005	4-room	01–03	105	Model A	83y	$242,000	$214
Mar 2004	4-room	01–03	105	Model A	84y	$270,000	$239
Oct 2003	4-room	04–06	111	Model A	84y	$281,000	$235
Jun 2002	4-room	07–09	105	Model A	86y	$264,800	$234
May 2002	5-room	01–03	121	Improved	86y	$342,000	$263
Apr 2002	5-room	07–09	121	Improved	86y	$355,000	$273
Dec 2001	4-room	04–06	103	Model A	86y	$269,000	$243
Sep 2001	4-room	01–03	105	Model A	86y	$260,000	$230
Jul 2001	5-room	07–09	121	Improved	87y	$362,000	$278
Apr 2001	4-room	10–12	103	Model A	87y	$281,250	$254
Nov 2000	4-room	13–15	113	Model A	87y	$320,000	$263
Sep 2000	4-room	07–09	103	Model A	87y	$316,000	$285
Nov 1999	4-room	10–12	111	Model A	88y	$306,000	$256
Oct 1999	5-room	10–12	121	Improved	88y	$415,000	$319
Oct 1999	5-room	04–06	121	Improved	88y	$390,000	$299
Jul 1999	4-room	07–09	105	Model A	89y	$292,000	$258
Jul 1999	4-room	04–06	111	Model A	89y	$280,500	$235
Jun 1999	4-room	13–15	111	Model A	89y	$298,000	$249
Jun 1999	4-room	10–12	111	Model A	89y	$305,000	$255
May 1999	4-room	01–03	111	Model A	89y	$266,000	$223
Mar 1999	4-room	10–12	111	Model A	89y	$293,000	$245
Feb 1999	5-room	04–06	121	Improved	89y	$388,500	$298
Jan 1999	5-room	13–15	121	Improved	89y	$382,000	$293
Jan 1999	4-room	07–09	105	Model A	89y	$278,800	$247
Dec 1998	4-room	01–03	105	Model A	89y	$266,000	$235
Nov 1998	4-room	07–09	94	New Generation	89y	$254,000	$251
Nov 1998	4-room	10–12	105	Model A	89y	$290,000	$257
Sep 1998	5-room	07–09	121	Improved	89y	$401,500	$308
Sep 1998	4-room	07–09	105	Model A	89y	$290,000	$257
Aug 1998	4-room	04–06	113	Model A	89y	$315,000	$259
Jul 1998	4-room	07–09	105	Model A	90y	$304,000	$269
Jul 1998	4-room	01–03	105	Model A	90y	$279,000	$247
Jul 1998	4-room	01–03	105	Model A	90y	$280,000	$248
May 1998	4-room	07–09	111	Model A	90y	$310,000	$259
Nov 1997	4-room	04–06	105	Model A	90y	$330,000	$292
Jun 1997	5-room	01–03	121	Improved	91y	$464,000	$356
May 1997	5-room	13–15	121	Improved	91y	$460,000	$353
May 1997	4-room	04–06	103	Model A	91y	$337,000	$304
May 1997	4-room	01–03	105	Model A	91y	$341,000	$302
Oct 1996	5-room	10–12	121	Improved	91y	$490,000	$376
Sep 1996	4-room	04–06	111	Model A	91y	$400,000	$335
Mar 1996	4-room	13–15	113	Model A	92y	$322,000	$265
Sep 1995	5-room	04–06	121	Improved	92y	$345,000	$265
May 1995	5-room	04–06	121	Improved	93y	$348,000	$267
Jan 1995	5-room	07–09	121	Improved	93y	$325,000	$250
Jan 1995	4-room	07–09	105	Model A	93y	$190,000	$168
Dec 1994	4-room	13–15	111	Model A	93y	$240,000	$201
Dec 1994	4-room	10–12	103	Model A	93y	$212,000	$191
Dec 1994	4-room	04–06	103	Model A	93y	$180,000	$162
Aug 1994	4-room	07–09	105	Model A	93y	$178,000	$157
Apr 1994	5-room	10–12	121	Improved	94y	$270,000	$207
Nov 1993	4-room	07–09	103	Model A	94y	$208,000	$188