Block 423 Hougang Ave 6
423 Hougang Ave 6, Singapore 530423
Block 423 Hougang Ave 6 is an HDB block in Hougang, completed in 1989, with 90 dwelling units. Across 106 resales on record, 4-Room flats have recently resold around S$530k (S$432 psf, 105 sqm). The lease has approximately 62 years remaining.
What are the key facts about Block 423 Hougang Ave 6?
Block 423 Hougang Ave 6 is an HDB block in Hougang, completed in 1989, with 90 dwelling units.
- Town
- Hougang
- Planning area
- Hougang
- Completed
- 1989
- Storeys
- 10
- Total units
- 90
- Flat model
- Model A · Improved
- Market segment
- OCR
- Median resale
- S$530k
- Last transacted
- Jul 2026
- Remaining lease
- ≈ 62 years
What are resale prices at Block 423 Hougang Ave 6?
4-Room flats have recently resold around S$530k (S$432 psf), from 106 resales on record (HDB caveat data).
| Flat type | Resales | Median price | Size | PSF |
|---|---|---|---|---|
| 4-Room | 80 | S$488,000recent | 105 sqm | S$432 psf |
| 5-Room | 26 | S$395,088recent | 122 sqm | S$298 psf |
Live now: 9 flats listed for sale at this block (median asking S$680k) — 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 423 Hougang Ave 6 get?
Flats at Block 423 Hougang Ave 6 have recently sublet for a median of S$3,200/mo, an indicative gross rental yield of about 7.2% (from 24 recent rental contracts).
Median rent
S$3,200/mo
24 recent contracts
Gross rental yield
7.2%
indicative, gross
Annual rent
S$38,400
median × 12 months
| Flat type | Contracts | Median rent |
|---|---|---|
| 4-Room | 22 | S$3,200/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 Feb 2026. Source: HDB rental (subletting) data.
What has recently sold at Block 423 Hougang Ave 6?
Block 423 Hougang Ave 6 has 106 recorded resales; the most recent transacted at S$838,888 in Jul 2026 (HDB caveat data).
| Date | Flat type | Storey | Size | Price |
|---|---|---|---|---|
| Jul 2026 | 5-Room | 07 TO 09 | 122 sqm | S$838,888 |
| Jul 2025 | 4-Room | 07 TO 09 | 94 sqm | S$662,888 |
| Aug 2024 | 4-Room | 04 TO 06 | 109 sqm | S$650,000 |
| Feb 2024 | 4-Room | 04 TO 06 | 103 sqm | S$590,000 |
| Jul 2022 | 4-Room | 07 TO 09 | 105 sqm | S$550,000 |
| Apr 2022 | 4-Room | 04 TO 06 | 113 sqm | S$530,000 |
| Dec 2021 | 4-Room | 01 TO 03 | 105 sqm | S$488,000 |
| Jul 2021 | 5-Room | 07 TO 09 | 123 sqm | S$555,000 |
| Jun 2020 | 4-Room | 04 TO 06 | 105 sqm | S$428,000 |
| Jul 2018 | 4-Room | 07 TO 09 | 94 sqm | S$368,000 |
| Jun 2018 | 4-Room | 07 TO 09 | 110 sqm | S$465,000 |
| Jun 2018 | 4-Room | 07 TO 09 | 110 sqm | S$498,000 |
What flat types are in Block 423 Hougang Ave 6?
Block 423 Hougang Ave 6 has 90 units, mostly 4-Room flats of the Model A / Improved model.
Unit stock by flat type, from the HDB property information dataset.
Where is Block 423 Hougang Ave 6?
Block 423 Hougang Ave 6 is an HDB block in Hougang.
Block 423 Hougang Ave 6 is an HDB block located along Hougang Ave 6. The block is recorded as completed around 1989, with up to 10 storeys. It has an estimated 90 residential units based on the HDB property information dataset. Flat types in the block include 4-room and 5-room units.
The address is Block 423 Hougang Ave 6, Singapore 530423. It is part of District 19, Serangoon Garden / Hougang / Punggol, the Hougang planning area. The block falls within the North-East Region and the OCR market segment.
The nearest rail connection is Hougang MRT, approximately 357m away, around 6 minutes on foot. Nearby amenities include Hougang Mall for shopping, NTUC Fairprice Co-operative Ltd for groceries, Buangkok Hawker Centre for food options, Jln Naung Pg for greenery and recreation, Hougang Polyclinic for polyclinic services, and Punggol Community Club for community facilities.
How far is Block 423 Hougang Ave 6 from MRT and schools?
The nearest MRT/LRT to Block 423 Hougang Ave 6 is Hougang MRT, about 357 m away (~6 min walk). 9 schools are within 1 km, including 5 primary schools.
Getting around
- Hougang MRT357 m · ~6 min
- Buangkok MRT982 m · ~15 min
Schools nearby
Flats within 1 km of a primary school qualify for Primary 1 (P1) registration priority.
- Holy Innocents' High SchoolSecondary schoolwithin 1 km390 m
- Chij Our Lady Of The NativityPrimary schoolwithin 1 km · P1 priority409 m
- Punggol Primary SchoolPrimary schoolwithin 1 km · P1 priority417 m
- Montfort Junior SchoolPrimary schoolwithin 1 km · P1 priority520 m
- Montfort Secondary SchoolSecondary schoolwithin 1 km561 m
- Holy Innocents' Primary SchoolPrimary schoolwithin 1 km · P1 priority794 m
- Serangoon Secondary SchoolSecondary schoolwithin 1 km910 m
- North Vista Secondary SchoolSecondary schoolwithin 1 km975 m
Shops, food & parks
Straight-line distances from the block. Source: PropKaki amenities data.
What does it cost to buy a flat at Block 423 Hougang Ave 6?
Buying a flat at Block 423 Hougang Ave 6 (~S$530k) needs about S$4,225/mo in income and S$1,990/mo in repayments, after S$10,500 stamp duty and a S$133k downpayment.
Illustrative, for a buyer at the recent median resale price (S$530k) — 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$10,500
BSD, tiered
Downpayment (25%)
S$133k
cash + CPF
Monthly instalment
S$1,990/mo
25y @ 3.5%
Income required
S$4,225/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 Hougang Ave 6? Ask what it's worth.
Recent transacted prices, what's nearby, and whether an asking price is fair.
PropKakiRecent sales at Block 423 Hougang Ave 6 land close to the town median — fair value, no big premium.
Frequently asked questions about Block 423 Hougang Ave 6
How much does a 4-Room flat at Block 423 Hougang Ave 6 cost?⌄
4-Room flats at Block 423 Hougang Ave 6 have recently resold for a median of about S$530k (S$432 psf), from 106 resales on record (HDB caveats). The exact price depends on the flat type, floor and remaining lease.
What are resale prices at Block 423 Hougang Ave 6 by flat type?⌄
4-Room ≈ S$488k; 5-Room ≈ S$395k (median resale, HDB caveats).
Is Block 423 Hougang Ave 6 worth buying given its remaining lease?⌄
Block 423 Hougang Ave 6 has about 62 years left on its 99-year lease (completed 1989). That's a long runway, so CPF usage and bank financing are generally unrestricted. The figure is taken from the most recent transacted flat.
What is the rental yield at Block 423 Hougang Ave 6?⌄
Gross rental yield at Block 423 Hougang Ave 6 is about 7.2%, based on a median subletting rent of about S$3,200/mo against a resale price of about S$530k. 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 423 Hougang Ave 6?⌄
For a flat at about S$530k on a 25-year HDB-style loan, you'd need roughly S$4,225/mo in household income, with repayments around S$1,990/mo after a S$133k downpayment. First-timer grants of up to S$80,000+ (not included) lower the cash needed.
What is the nearest MRT to Block 423 Hougang Ave 6?⌄
The nearest MRT/LRT station to Block 423 Hougang Ave 6 is Hougang MRT, about 357 m away (~6 min walk).
Which primary schools are within 1 km of Block 423 Hougang Ave 6?⌄
Chij Our Lady Of The Nativity, Punggol Primary School, Montfort Junior School, Holy Innocents' Primary School are within 1 km of Block 423 Hougang Ave 6 — flats within 1 km of a primary school qualify for Primary 1 (P1) registration priority.