Block 423 Serangoon Ctrl
423 Serangoon Ctrl, Singapore 550423
Block 423 Serangoon Ctrl is an HDB block in Serangoon, completed in 1988, with 60 dwelling units. Across 67 resales on record, Executive flats have recently resold around S$950k (S$605 psf, 146 sqm). The lease has approximately 64 years remaining.
What are the key facts about Block 423 Serangoon Ctrl?
Block 423 Serangoon Ctrl is an HDB block in Serangoon, completed in 1988, with 60 dwelling units.
- Town
- Serangoon
- Planning area
- Serangoon
- Completed
- 1988
- Storeys
- 13
- Total units
- 60
- Flat model
- Maisonette
- Market segment
- OCR
- Median resale
- S$950k
- Last transacted
- Nov 2023
- Remaining lease
- ≈ 64 years
What are resale prices at Block 423 Serangoon Ctrl?
Executive flats have recently resold around S$950k (S$605 psf), from 67 resales on record (HDB caveat data).
| Flat type | Resales | Median price | Size | PSF |
|---|---|---|---|---|
| Executive | 67 | S$950,000recent | 146 sqm | S$605 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 Nov 2023.
What has recently sold at Block 423 Serangoon Ctrl?
Block 423 Serangoon Ctrl has 67 recorded resales; the most recent transacted at S$1,100,000 in Nov 2023 (HDB caveat data).
| Date | Flat type | Storey | Size | Price |
|---|---|---|---|---|
| Nov 2023 | Executive | 04 TO 06 | 146 sqm | S$1,100,000 |
| Nov 2023 | Executive | 04 TO 06 | 146 sqm | S$988,000 |
| Oct 2023 | Executive | 04 TO 06 | 146 sqm | S$930,000 |
| Sept 2023 | Executive | 07 TO 09 | 146 sqm | S$1,110,000 |
| Jul 2022 | Executive | 01 TO 03 | 146 sqm | S$970,000 |
| Apr 2022 | Executive | 01 TO 03 | 146 sqm | S$925,000 |
| Mar 2022 | Executive | 10 TO 12 | 146 sqm | S$965,000 |
| Sept 2021 | Executive | 04 TO 06 | 146 sqm | S$950,000 |
| Apr 2021 | Executive | 01 TO 03 | 149 sqm | S$890,000 |
| Aug 2020 | Executive | 07 TO 09 | 146 sqm | S$960,000 |
| Dec 2019 | Executive | 10 TO 12 | 146 sqm | S$910,000 |
| Nov 2018 | Executive | 10 TO 12 | 146 sqm | S$905,000 |
What flat types are in Block 423 Serangoon Ctrl?
Block 423 Serangoon Ctrl has 60 units, mostly Executive flats of the Maisonette model.
Unit stock by flat type, from the HDB property information dataset.
Where is Block 423 Serangoon Ctrl?
Block 423 Serangoon Ctrl is an HDB block in Serangoon.
Block 423 Serangoon Ctrl is an HDB block located along Serangoon Ctrl. The block is recorded as completed around 1988, with up to 13 storeys. It has an estimated 60 residential units based on the HDB property information dataset. Flat types in the block include executive units.
The address is Block 423 Serangoon Ctrl, Singapore 550423. 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 394m away, around 6 minutes on foot. Nearby amenities include NEX for shopping, COLD STORAGE SINGAPORE (1983) PTE LTD for groceries, Upper Serangoon Park for greenery and recreation, and Braddell Heights Community Club for community facilities.
How far is Block 423 Serangoon Ctrl from MRT and schools?
The nearest MRT/LRT to Block 423 Serangoon Ctrl is Serangoon MRT, about 394 m away (~6 min walk). 4 schools are within 1 km, including 1 primary school.
Getting around
- Serangoon MRT394 m · ~6 min
- Bartley MRT839 m · ~13 min
Schools nearby
Flats within 1 km of a primary school qualify for Primary 1 (P1) registration priority.
- St. Gabriel's Secondary SchoolSecondary schoolwithin 1 km230 m
- Zhonghua Secondary SchoolSecondary schoolwithin 1 km685 m
- Yangzheng Primary SchoolPrimary schoolwithin 1 km · P1 priority778 m
- Maris Stella High SchoolMixed-level schoolwithin 1 km828 m
- Nanyang Junior CollegeJunior college1.0 km
- Paya Lebar Methodist Girls' School (Primary)Primary school1.0 km
- Paya Lebar Methodist Girls' School (Secondary)Secondary school1.1 km
- Bartley Secondary SchoolSecondary school1.2 km
Shops, food & parks
Straight-line distances from the block. Source: PropKaki amenities data.
What does it cost to buy a flat at Block 423 Serangoon Ctrl?
Buying a flat at Block 423 Serangoon Ctrl (~S$950k) needs about S$7,573/mo in income and S$3,567/mo in repayments, after S$23,100 stamp duty and a S$238k downpayment.
Illustrative, for a buyer at the recent median resale price (S$950k) — 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$23,100
BSD, tiered
Downpayment (25%)
S$238k
cash + CPF
Monthly instalment
S$3,567/mo
25y @ 3.5%
Income required
S$7,573/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 423 Serangoon Ctrl? Ask what it's worth.
Recent transacted prices, what's nearby, and whether an asking price is fair.
PropKakiRecent sales at Block 423 Serangoon Ctrl land close to the town median — fair value, no big premium.
Frequently asked questions about Block 423 Serangoon Ctrl
How much does a Executive flat at Block 423 Serangoon Ctrl cost?⌄
Executive flats at Block 423 Serangoon Ctrl have recently resold for a median of about S$950k (S$605 psf), from 67 resales on record (HDB caveats). The exact price depends on the flat type, floor and remaining lease.
Is Block 423 Serangoon Ctrl worth buying given its remaining lease?⌄
Block 423 Serangoon Ctrl has about 64 years left on its 99-year lease (completed 1988). That's a long runway, so CPF usage and bank financing are generally unrestricted. The figure is taken from the most recent transacted flat.
How much do I need to earn to buy a flat at Block 423 Serangoon Ctrl?⌄
For a flat at about S$950k on a 25-year HDB-style loan, you'd need roughly S$7,573/mo in household income, with repayments around S$3,567/mo after a S$238k downpayment. First-timer grants of up to S$80,000+ (not included) lower the cash needed.
What is the nearest MRT to Block 423 Serangoon Ctrl?⌄
The nearest MRT/LRT station to Block 423 Serangoon Ctrl is Serangoon MRT, about 394 m away (~6 min walk).
Which primary schools are within 1 km of Block 423 Serangoon Ctrl?⌄
Yangzheng Primary School is within 1 km of Block 423 Serangoon Ctrl — flats within 1 km of a primary school qualify for Primary 1 (P1) registration priority.