How Much Is a Flat at Block 401 Serangoon Ave 1 Worth?

4 Room, 5 Room · Built 1989 · 61 years 10 months remaining MOP Cleared

Last updated: 15 Jun 2026

Latest Sale

$838,888

2026-05 · 4 Room

Median $/sqm

$6,000

Based on 27 txns

Total Txns

27

Since data available

5-Yr Trend

▲31.6%

vs 5 years ago

What Will You Actually Walk Away With?

Select your flat and storey. We'll calculate your estimated cash in hand, CPF refund, and all deductions — including accrued interest and resale levy.

Flat Type

Storey Band (closest to your floor)

How did you buy?

What are you thinking of buying next?

Market Demand

📊 Moderate activity — a specialist agent can position your flat to the right buyer.

Based on recent sales data · Updates monthly

Sold at this block (6mo)

2 flats ⚡

AVG. DAYS TO OFFER

~90 days

Transaction density proxy

BUYER DEMAND

4.3 / 10

Block Specialists

Connect with agents who know this block — coming soon.

Lease Clock

Act Soon
0 yrs 61 years left 99 yrs

Key threshold: 60 years

Buyers will face resale restrictions after MOP

Your block has 61 years of lease left. A buyer who purchases today and waits out their 5-year MOP will be selling a flat under 60 years — which means their buyers face CPF and loan limits. Savvy buyers know this. It shrinks your pool and puts downward pressure on price.

An experienced agent can help you find motivated buyers and close before this becomes a bigger factor.

Transaction History 27 total

Date Floor Type sqm Price $/sqm
2026-05 01 TO 03 4 Room 105 $838,888 $7,989
2026-03 04 TO 06 4 Room 105 $852,500 $8,119
2025-09 04 TO 06 4 Room 103 $790,000 $7,670
2025-07 10 TO 12 4 Room 109 $855,000 $7,844
2025-02 01 TO 03 4 Room 105 $795,888 $7,580
2024-01 04 TO 06 5 Room 121 $862,000 $7,124
2023-12 10 TO 12 4 Room 93 $678,000 $7,290
2023-11 01 TO 03 4 Room 109 $750,000 $6,881
2022-05 07 TO 09 4 Room 109 $670,000 $6,147
2021-06 04 TO 06 4 Room 93 $560,000 $6,022
2021-05 07 TO 09 4 Room 109 $632,000 $5,798
2021-01 04 TO 06 4 Room 105 $580,000 $5,524
2020-10 04 TO 06 4 Room 105 $598,000 $5,695
2020-06 04 TO 06 4 Room 93 $515,000 $5,538
2020-01 07 TO 09 4 Room 105 $630,000 $6,000
2019-04 04 TO 06 4 Room 103 $612,000 $5,942
2019-04 07 TO 09 4 Room 103 $560,000 $5,437
2019-03 01 TO 03 4 Room 105 $575,000 $5,476
2019-03 10 TO 12 5 Room 121 $755,000 $6,240
2019-02 07 TO 09 5 Room 121 $745,000 $6,157
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About Block 401 Serangoon Ave 1

Flats at Block 401 Serangoon Ave 1 have been selling at a median of $8,054/sqm — up 3.8% over the last 6 months, mainly 4-room flats at $845,694 median, with 2 transactions recorded.

The block is a 8-minute walk from Serangoon MRT Station (589m) and is near Nex mall (814m, 10 min walk). It is also near Yangzheng Primary School (1437m, 18 min walk).

All data is sourced from data.gov.sg and updated daily.

What's Near Block 401 Serangoon Ave 1?

Facilities and transport within a 15-minute walk. Walking times are route-based.

MRT / LRT

SERANGOON MRT STATION 589m · 8 min
BARTLEY MRT STATION 1105m · 14 min
WOODLEIGH MRT STATION 1113m · 14 min

Shopping Malls

Nex 814m · 10 min

Parks

BIDADARI PARK HILLOCK 1142m · 14 min
HOW SUN LINEAR PARK 801m · 10 min

Community Facilities

Braddell Heights CC (Pending U/C) 1050m · 13 min
Serangoon Library 1004m · 13 min

Other Blocks on Serangoon Ave 1

Block 402 Serangoon Ave 1 Block 403 Serangoon Ave 1 Block 407 Serangoon Ave 1

Frequently Asked Questions

How much is a flat at Block 401 Serangoon Ave 1?

Based on 27 recorded transactions, the median resale price ranges from $630,000 (4 Room) to $750,000 (5 Room). The most recent sale was $838,888 in 2026-05.

Median by flat type (last 24 months)

Flat Type Most Recent Median
4 Room $838,888
5 Room $750,000 (all-time)

What is my flat worth at Block 401?

The overall median resale price at Block 401 Serangoon Ave 1 is $838,888. Prices have risen 31.6% over the past 5 years.

How much cash will I actually receive when I sell my flat at Block 401?

Your gross sale proceeds are what the buyer pays. From that, three things are deducted: your outstanding loan, your CPF principal (all CPF savings used for the flat, returned to your CPF OA), and CPF accrued interest (the interest CPF calculates on those savings at 2.5% p.a., compounded annually). What remains after these deductions is your cash in hand. Use the What's Your Flat Worth? calculator above to estimate your actual cash take-home based on Block 401 prices.

What is CPF accrued interest and why does it reduce my sale proceeds?

When you buy a flat using CPF, those funds are considered a loan from your CPF OA to yourself. When you sell, CPF Board requires you to return the principal plus the interest those funds would have earned had they stayed in your OA — currently 2.5% per annum, compounded. This is not a penalty or a fee paid to anyone; the money goes back into your CPF OA. However, it does reduce your cash proceeds — and the longer you have owned the flat, the larger the accrued amount. Use the CPF Accrued Interest Calculator above to estimate your deduction before you decide to sell.

How active is the resale market at Block 401?

Block 401 has recorded 27 resale transactions — roughly 1.1 sales per month over the past 24 months. The latest transaction closed in 2026-05.

What flat types are available at Block 401?

Block 401 Serangoon Ave 1 has 4 Room, 5 Room units. Median prices range from $630,000 to $750,000.

How much can I unlock to upgrade if I sell my HDB at Block 401?

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 401?

Block 401 was built in 1989 with a 99-year lease. It has approximately 61 years 10 months remaining.

Does Block 401's remaining lease affect its resale value?

At 62 years remaining, most buyers still qualify for full CPF usage. Buyers in their late 30s or older may see slight CPF caps depending on their age, but the effect on your buyer pool is small. Pricing at market rate remains straightforward.

When can I sell my flat at Block 401 Serangoon Ave 1?

Flats at Block 401 Serangoon Ave 1 have cleared their 5-year Minimum Occupation Period (MOP) and are eligible for resale on the open market. You can list your flat now.

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
Resale levy S$15,000–S$55,000 (if applicable)
Seller stamp duty None (after MOP)
Total (est.) on $838,888 excl. levy $17,358 to $18,858