Block 421B Northshore Dr
421B Northshore Dr, Singapore 822421
Block 421B Northshore Dr is an HDB block in Punggol, completed in 2021, with 236 dwelling units. Across 5 resales on record, 2-Room flats have recently resold around S$455k (S$870 psf, 47 sqm). The lease has approximately 94 years remaining.
What are the key facts about Block 421B Northshore Dr?
Block 421B Northshore Dr is an HDB block in Punggol, completed in 2021, with 236 dwelling units.
- Town
- Punggol
- Planning area
- Punggol
- Completed
- 2021
- Storeys
- 26
- Total units
- 236
- Flat model
- 2-Room · Model A
- Market segment
- OCR
- Median resale
- S$455k
- Last transacted
- Jul 2026
- Remaining lease
- ≈ 94 years
What are resale prices at Block 421B Northshore Dr?
2-Room flats have recently resold around S$455k (S$870 psf), from 5 resales on record (HDB caveat data).
| Flat type | Resales | Median price | Size | PSF |
|---|---|---|---|---|
| 2-Room | 3 | S$360,000recent | 38 sqm | S$880 psf |
| 4-Room | 2 | S$827,500 | 95 sqm | S$814 psf |
Live now: 47 flats listed for sale at this block (median asking S$838k) and 4 for rent (median S$2,850/mo) — 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 421B Northshore Dr get?
Flats at Block 421B Northshore Dr have recently sublet for a median of S$2,500/mo, an indicative gross rental yield of about 6.6% (from 5 recent rental contracts).
Median rent
S$2,500/mo
5 recent contracts
Gross rental yield
6.6%
indicative, gross
Annual rent
S$30,000
median × 12 months
| Flat type | Contracts | Median rent |
|---|---|---|
| 2-Room | 4 | S$2,400/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 Jun 2026. Source: HDB rental (subletting) data.
What has recently sold at Block 421B Northshore Dr?
Block 421B Northshore Dr has 5 recorded resales; the most recent transacted at S$785,000 in Jul 2026 (HDB caveat data).
| Date | Flat type | Storey | Size | Price |
|---|---|---|---|---|
| Jul 2026 | 4-Room | 04 TO 06 | 93 sqm | S$785,000 |
| Jun 2026 | 2-Room | 01 TO 03 | 38 sqm | S$360,000 |
| May 2026 | 2-Room | 16 TO 18 | 38 sqm | S$356,000 |
| May 2026 | 2-Room | 04 TO 06 | 47 sqm | S$455,000 |
| May 2026 | 4-Room | 25 TO 27 | 96 sqm | S$870,000 |
What flat types are in Block 421B Northshore Dr?
Block 421B Northshore Dr has 236 units, mostly 2-Room flats of the 2-Room / Model A model.
Unit stock by flat type, from the HDB property information dataset.
Where is Block 421B Northshore Dr?
Block 421B Northshore Dr is an HDB block in Punggol.
Block 421B Northshore Dr is an HDB block located along Northshore Dr. The block is recorded as completed around 2021, with up to 26 storeys. It has an estimated 236 residential units based on the HDB property information dataset. Flat types in the block include 2-room and 4-room units.
The address is Block 421B Northshore Dr, Singapore 822421. It is part of District 19, Serangoon Garden / Hougang / Punggol, the Punggol planning area. The block falls within the North-East Region and the OCR market segment.
The nearest rail connection is Punggol Point LRT, approximately 343m away, around 5 minutes on foot. Nearby amenities include Waterway Point for shopping, GW TRADER PTE. LTD. for groceries, Punggol Coast Hawker Centre for food options, and Punggol Heritage Trail Phase 2 (Interim Boundary) for greenery and recreation.
How far is Block 421B Northshore Dr from MRT and schools?
The nearest MRT/LRT to Block 421B Northshore Dr is Punggol Point LRT, about 343 m away (~5 min walk). 1 school is within 1 km, including 1 primary school.
Getting around
- Punggol Point LRT343 m · ~5 min
- Samudera LRT468 m · ~7 min
- Teck Lee LRT750 m · ~12 min
Schools nearby
Flats within 1 km of a primary school qualify for Primary 1 (P1) registration priority.
- Northshore Primary SchoolPrimary schoolwithin 1 km · P1 priority127 m
- Punggol Cove Primary SchoolPrimary school1.1 km
- Valour Primary SchoolPrimary school1.5 km
- Punggol View Primary SchoolPrimary school1.6 km
- Yusof Ishak Secondary SchoolSecondary school1.7 km
- Oasis Primary SchoolPrimary school1.8 km
- Punggol Secondary SchoolSecondary school2.0 km
Shops, food & parks
Straight-line distances from the block. Source: PropKaki amenities data.
What does it cost to buy a flat at Block 421B Northshore Dr?
Buying a flat at Block 421B Northshore Dr (~S$455k) needs about S$3,627/mo in income and S$1,708/mo in repayments, after S$8,250 stamp duty and a S$114k downpayment.
Illustrative, for a buyer at the recent median resale price (S$455k) — 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$8,250
BSD, tiered
Downpayment (25%)
S$114k
cash + CPF
Monthly instalment
S$1,708/mo
25y @ 3.5%
Income required
S$3,627/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 421B Northshore Dr? Ask what it's worth.
Recent transacted prices, what's nearby, and whether an asking price is fair.
PropKakiRecent sales at Block 421B Northshore Dr land close to the town median — fair value, no big premium.
Frequently asked questions about Block 421B Northshore Dr
How much does a 2-Room flat at Block 421B Northshore Dr cost?⌄
2-Room flats at Block 421B Northshore Dr have recently resold for a median of about S$455k (S$870 psf), from 5 resales on record (HDB caveats). The exact price depends on the flat type, floor and remaining lease.
What are resale prices at Block 421B Northshore Dr by flat type?⌄
2-Room ≈ S$360k; 4-Room ≈ S$828k (median resale, HDB caveats).
Is Block 421B Northshore Dr worth buying given its remaining lease?⌄
Block 421B Northshore Dr has about 94 years left on its 99-year lease (completed 2021). 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 421B Northshore Dr?⌄
Gross rental yield at Block 421B Northshore Dr is about 6.6%, based on a median subletting rent of about S$2,500/mo against a resale price of about S$455k. 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 421B Northshore Dr?⌄
For a flat at about S$455k on a 25-year HDB-style loan, you'd need roughly S$3,627/mo in household income, with repayments around S$1,708/mo after a S$114k downpayment. First-timer grants of up to S$80,000+ (not included) lower the cash needed.
What is the nearest MRT to Block 421B Northshore Dr?⌄
The nearest MRT/LRT station to Block 421B Northshore Dr is Punggol Point LRT, about 343 m away (~5 min walk).
Which primary schools are within 1 km of Block 421B Northshore Dr?⌄
Northshore Primary School is within 1 km of Block 421B Northshore Dr — flats within 1 km of a primary school qualify for Primary 1 (P1) registration priority.