Latest Sale
$650,000
2026-03 · 4 Room
How Much Is a Flat at Block 509B Yishun Ave 4 Worth?
4 Room, 5 Room · Built 2018 · 91 years 02 months remaining MOP Cleared
Median $/sqm
$6,053
Based on 24 txns
Total Txns
24
Since data available
5-Yr Trend
—
Insufficient data
What's Your Flat Worth?
Select your flat type and storey band, then click Get Estimate. Change your selection at any time and get a new estimate.
Flat Type
Storey Band (closest to your floor)
How did you buy?
Estimated Upgrade Budget
—
Cash
—
Spendable
CPF Refund
—
Back to CPF OA
Market Value Estimate —
Est. Purchase Price
· Affects CPF accrued interest
+CPF & Loan — view details →
Loan Type
Outstanding Loan (est.) —
CPF Principal (est.) —
CPF Accrued Interest (est.) —
+Selling Costs — view details →
Agent Commission (2%) —
Experienced agents often recover their fee through a higher sale price.
Conveyancing Lawyer (est.) −$500
Handles legal paperwork — choose HDB lawyer or private conveyancing firm
HDB Legal & Admin Fees
−$460 Transfer, mortgage discharge, title search, registration
Net Proceeds for Upgrade —
Market Demand
🔥 High demand — buyers are active here. An experienced agent can negotiate above median.
Based on recent sales data · Updates monthly
Sold at this block (6mo)
6 flats ⚡
AVG. DAYS TO OFFER
~30 days
Transaction density proxy
BUYER DEMAND
7.0 / 10
Block Specialists
Connect with agents who know this block — coming soon.
Block Specialists
Connect with agents who know this block
Specialist 1
1,140 transactions in Yishun Ave 4
Highest: $1,288,000
Specialist 2
1,140 transactions in Yishun Ave 4
Highest: $1,288,000
Specialist 3
1,140 transactions in Yishun Ave 4
Highest: $1,288,000
1 / 2
Specialist 1
1,140 transactions in Yishun Ave 4
Highest: $1,288,000
Specialist 2
1,140 transactions in Yishun Ave 4
Highest: $1,288,000
Specialist 3
1,140 transactions in Yishun Ave 4
Highest: $1,288,000
Specialist 4
1,140 transactions in Yishun Ave 4
Highest: $1,288,000
Specialist 5
1,140 transactions in Yishun Ave 4
Highest: $1,288,000
Specialist 6
1,140 transactions in Yishun Ave 4
Highest: $1,288,000
Agent profiles launching soon
Transaction History 24 total
| Date | Floor | Type | sqm | Price | $/sqm |
|---|---|---|---|---|---|
| 2026-03 | 07 TO 09 | 5 Room | 113 | $743,000 | $6,575 |
| 2026-03 | 10 TO 12 | 4 Room | 93 | $650,000 | $6,989 |
| 2026-02 | 01 TO 03 | 4 Room | 93 | $570,000 | $6,129 |
| 2025-12 | 01 TO 03 | 4 Room | 93 | $570,000 | $6,129 |
| 2025-11 | 04 TO 06 | 5 Room | 113 | $690,000 | $6,106 |
| 2025-10 | 04 TO 06 | 5 Room | 113 | $680,000 | $6,018 |
| 2025-09 | 04 TO 06 | 5 Room | 113 | $708,000 | $6,265 |
| 2025-08 | 04 TO 06 | 4 Room | 93 | $612,000 | $6,581 |
| 2025-01 | 04 TO 06 | 4 Room | 93 | $611,000 | $6,570 |
| 2024-08 | 10 TO 12 | 4 Room | 93 | $600,000 | $6,452 |
| 2024-08 | 10 TO 12 | 5 Room | 113 | $738,000 | $6,531 |
| 2024-02 | 10 TO 12 | 4 Room | 93 | $583,000 | $6,269 |
| 2024-01 | 10 TO 12 | 4 Room | 93 | $565,000 | $6,075 |
| 2023-11 | 04 TO 06 | 4 Room | 93 | $560,888 | $6,031 |
| 2023-10 | 04 TO 06 | 4 Room | 93 | $545,000 | $5,860 |
| 2023-01 | 10 TO 12 | 5 Room | 113 | $675,000 | $5,973 |
| 2022-08 | 10 TO 12 | 4 Room | 93 | $555,888 | $5,977 |
| 2022-08 | 07 TO 09 | 5 Room | 113 | $650,000 | $5,752 |
| 2022-07 | 10 TO 12 | 5 Room | 113 | $671,000 | $5,938 |
| 2022-04 | 04 TO 06 | 4 Room | 93 | $488,000 | $5,247 |
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About Block 509B Yishun Ave 4
Block 509B at Yishun Ave 4 is a residential HDB block in Yishun, Singapore, built in 2018 with approximately 91 years remaining on its 99-year lease. The block contains 4 Room, 5 Room flats, with resale prices ranging from $565,000 to $680,000 based on 24 recorded transactions. The most recent transaction was a 5 Room flat (storeys 07–09) that sold for $743,000 in Mar 2026. The current median price per square metre is $6,053.
Buyers can use CPF and get full bank financing for flats with more than 60 years of lease remaining — Block 509B has 91 years left, well within this window, meaning buyers face no financing restrictions.
All data is sourced from data.gov.sg and updated monthly.
Frequently Asked Questions
How much is a flat at Block 509B Yishun Ave 4?
Based on 24 recorded transactions, the median resale price ranges from $565,000 (4 Room) to $680,000 (5 Room). The most recent sale was $650,000 in 2026-03.
Median by flat type (last 24 months)
Flat Type Most Recent Median
4 Room $605,500
5 Room $708,000
What is my flat worth at Block 509B?
The overall median resale price at Block 509B Yishun Ave 4 is $656,750. Use the calculator above to estimate your equity based on your purchase price.
How active is the resale market at Block 509B?
Block 509B has recorded 24 resale transactions — roughly 1.0 sales per month over the past 24 months. The latest transaction closed in 2026-03.
What flat types are available at Block 509B?
Block 509B Yishun Ave 4 has 4 Room, 5 Room units. Median prices range from $565,000 to $680,000.
How much can I unlock to upgrade if I sell my HDB at Block 509B?
Selling to upgrade means planning both timelines and funds. Your proceeds split into cash in hand (for your next downpayment and transition costs) and CPF refund (returned to CPF OA). Use the What's Your Flat Worth? calculator above to estimate the equity you can deploy for your next home.
What is the remaining lease for Block 509B?
Block 509B was built in 2018 with a 99-year lease. It has approximately 91 years 02 months remaining. Lease decay accelerates below 40 years and affects buyer CPF eligibility.
How long does it take to sell an HDB flat?
The standard HDB resale process takes approximately 8–12 weeks from granting the Option to Purchase (OTP) to the completion appointment. This includes HDB resale application, HDB valuation, CPF usage approval, and final appointment scheduling.
Can I sell my HDB flat without an agent?
Yes — HDB's resale portal allows you to handle the transaction yourself. However, for owners upgrading to their next home, an experienced agent helps align pricing, buyer negotiation, and completion timing so your next purchase is less exposed to delays. The typical 1–2% commission is often recovered through a stronger sale outcome.
What are the costs of selling an HDB flat?
Typical costs for a seller:
Agent commission ~1–2% of sale price
Legal / conveyancing ~S$500 (HDB) or ~S$2,000 (private)
HDB admin fee S$80
Seller stamp duty None (after MOP)
Total (est.) on $605,500 $12,690 to $14,190