Block 117 Serangoon North Avenue 1

4 Room · 5 Room · Built 1985 · 58 years remaining lease MOP Cleared
Latest Sale
$685,000
Jan 2026 · 5 ROOM · #04-06
Median $/sqm
$4,479
Based on 18 transactions
Total Transactions
18
Since Jan 2017
5-Year Trend
▲ +14.2%
Median price change
Price Trend
Source: HDB Resale Flat Prices, data.gov.sg. Updated monthly.
What's Your Unit Worth?
HDB records transactions in 3-storey bands (e.g. 01 TO 03). Pick the band closest to your floor.
Estimated Market Value
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Future Value Projection
Estimated value in --
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Based on Bala's Table (SLA leasehold valuation model) with 3% annual market appreciation. Lease decay is non-linear and accelerates as remaining lease shortens. Not financial advice.
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Lease Decay Projection
0 years 58 years remaining 99 years
58 years 10 months
Remaining lease
↓ 0.53%/yr
Annual lease decay (Bala's Table)
Based on Bala's Table (SLA leasehold relativity model). At 58 years remaining, decay is gradual (~0.53%/yr). It accelerates significantly below 40 years. Market appreciation (historically 2-4%/yr) currently outpaces lease decay for this block.
All Transactions
Date Floor Type Area Price $/sqm
Jan 2026 04 TO 06 5 ROOM 121 sqm $685,000 $5,661
Nov 2025 10 TO 12 5 ROOM 123 sqm $708,888 $5,763
Apr 2025 07 TO 09 4 ROOM 99 sqm $610,000 $6,162
Jun 2024 01 TO 03 5 ROOM 121 sqm $639,888 $5,288
Apr 2024 04 TO 06 5 ROOM 121 sqm $610,000 $5,041
Mar 2024 01 TO 03 5 ROOM 121 sqm $635,000 $5,248
Aug 2023 04 TO 06 5 ROOM 121 sqm $610,000 $5,041
Apr 2022 10 TO 12 4 ROOM 98 sqm $485,000 $4,949
Dec 2021 13 TO 15 5 ROOM 121 sqm $600,000 $4,959
Aug 2019 07 TO 09 5 ROOM 121 sqm $450,000 $3,719
Jul 2019 04 TO 06 5 ROOM 125 sqm $465,000 $3,720
Jun 2019 04 TO 06 5 ROOM 121 sqm $470,000 $3,884
Nov 2018 10 TO 12 5 ROOM 123 sqm $455,000 $3,699
Sep 2018 10 TO 12 5 ROOM 121 sqm $485,000 $4,008
Aug 2018 04 TO 06 4 ROOM 99 sqm $350,000 $3,535
Feb 2018 10 TO 12 5 ROOM 121 sqm $470,000 $3,884
Aug 2017 01 TO 03 5 ROOM 125 sqm $443,000 $3,544
Apr 2017 01 TO 03 5 ROOM 121 sqm $425,000 $3,512
Showing 18 of 18 transactions
Source: HDB Resale Flat Prices, data.gov.sg (Singapore Open Data Licence).

About Block 117 Serangoon North Avenue 1

Block 117 at Serangoon North Avenue 1 is a residential HDB block in Serangoon, Singapore, built in 1985 with approximately 58 years remaining on its 99-year lease. The block contains 4 room, 5 room flats, with resale prices ranging from $350,000 to $708,888 based on 18 recorded transactions since January 2017. The most recent transaction was a 5 room flat on storeys 04 TO 06 sold for $685,000 in 2026-01. The current median price per square metre is $4,479. Over the past five years, resale prices at this block have increased by approximately 14.2%. Under Bala's Table (the Singapore Land Authority's official leasehold valuation model), the block's leasehold relativity ratio is 0.8679, with an annual lease decay rate of approximately 0.53%. All transaction data is sourced from Singapore's data.gov.sg open data platform and is updated monthly.

Frequently Asked Questions

How much is an HDB flat at Block 117 Serangoon North Avenue 1 worth?

The most recent resale transaction at Block 117 Serangoon North Avenue 1 was $685,000 for a 5 room flat in 2026-01. The median price per square metre across all flat types is $4,479, based on 18 transactions since January 2017. Data sourced from data.gov.sg.

What is the remaining lease for Block 117 Serangoon North Avenue 1?

Block 117 Serangoon North Avenue 1 was built in 1985 and has approximately 58 years and 10 months remaining on its 99-year lease. Under Bala's Table (the SLA leasehold valuation model), the annual lease decay rate is 0.53%, meaning the leasehold value decreases by approximately 0.53% per year at the current remaining lease.

What flat types are available at Block 117 Serangoon North Avenue 1?

Block 117 Serangoon North Avenue 1 in Serangoon contains 4 room, 5 room flats. Resale prices range from $350,000 to $708,888 based on historical transaction records from data.gov.sg.

Have HDB prices at Block 117 Serangoon North Avenue 1 gone up or down?

Resale prices at Block 117 Serangoon North Avenue 1 have increased by approximately 14.2% over the past five years. The current median price is $485,000, with the most recent sale at $685,000 in 2026-01.

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