Block 123 Hougang Avenue 1

3 Room · 4 Room · Built 1981 · 55 years remaining lease MOP Cleared
Latest Sale
$570,000
Sep 2025 · 4 ROOM · #10-12
Median $/sqm
$5,027
Based on 20 transactions
Total Transactions
20
Since Jan 2017
5-Year Trend
▲ +50.8%
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 55 years remaining 99 years
55 years
Remaining lease
↓ 0.62%/yr
Annual lease decay (Bala's Table)
Based on Bala's Table (SLA leasehold relativity model). At 55 years remaining, decay is gradual (~0.62%/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
Sep 2025 10 TO 12 4 ROOM 91 sqm $570,000 $6,264
May 2025 04 TO 06 3 ROOM 82 sqm $480,888 $5,864
Sep 2024 04 TO 06 3 ROOM 67 sqm $405,000 $6,045
Jun 2024 04 TO 06 4 ROOM 91 sqm $480,000 $5,275
Jan 2024 04 TO 06 3 ROOM 67 sqm $375,000 $5,597
Jan 2024 07 TO 09 3 ROOM 67 sqm $375,000 $5,597
Nov 2023 01 TO 03 3 ROOM 67 sqm $353,000 $5,269
Nov 2022 04 TO 06 3 ROOM 81 sqm $400,000 $4,938
Dec 2021 10 TO 12 3 ROOM 67 sqm $328,000 $4,896
Dec 2021 10 TO 12 3 ROOM 67 sqm $350,000 $5,224
Nov 2021 07 TO 09 3 ROOM 67 sqm $342,800 $5,116
Nov 2021 10 TO 12 3 ROOM 67 sqm $347,000 $5,179
Aug 2021 10 TO 12 3 ROOM 82 sqm $350,000 $4,268
Jan 2021 07 TO 09 3 ROOM 82 sqm $350,000 $4,268
Jul 2020 04 TO 06 3 ROOM 82 sqm $295,000 $3,598
Mar 2020 07 TO 09 3 ROOM 67 sqm $272,000 $4,060
Sep 2019 10 TO 12 3 ROOM 67 sqm $270,000 $4,030
Jun 2018 07 TO 09 3 ROOM 67 sqm $280,000 $4,179
Mar 2018 10 TO 12 3 ROOM 67 sqm $300,000 $4,478
Mar 2017 07 TO 09 3 ROOM 67 sqm $320,000 $4,776
Showing 20 of 20 transactions
Source: HDB Resale Flat Prices, data.gov.sg (Singapore Open Data Licence).

About Block 123 Hougang Avenue 1

Block 123 at Hougang Avenue 1 is a residential HDB block in Hougang, Singapore, built in 1981 with approximately 55 years remaining on its 99-year lease. The block contains 3 room, 4 room flats, with resale prices ranging from $270,000 to $570,000 based on 20 recorded transactions since January 2017. The most recent transaction was a 4 room flat on storeys 10 TO 12 sold for $570,000 in 2025-09. The current median price per square metre is $5,027. Over the past five years, resale prices at this block have increased by approximately 50.8%. Under Bala's Table (the Singapore Land Authority's official leasehold valuation model), the block's leasehold relativity ratio is 0.8492, with an annual lease decay rate of approximately 0.62%. 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 123 Hougang Avenue 1 worth?

The most recent resale transaction at Block 123 Hougang Avenue 1 was $570,000 for a 4 room flat in 2025-09. The median price per square metre across all flat types is $5,027, based on 20 transactions since January 2017. Data sourced from data.gov.sg.

What is the remaining lease for Block 123 Hougang Avenue 1?

Block 123 Hougang Avenue 1 was built in 1981 and has approximately 55 years remaining on its 99-year lease. Under Bala's Table (the SLA leasehold valuation model), the annual lease decay rate is 0.62%, meaning the leasehold value decreases by approximately 0.62% per year at the current remaining lease.

What flat types are available at Block 123 Hougang Avenue 1?

Block 123 Hougang Avenue 1 in Hougang contains 3 room, 4 room flats. Resale prices range from $270,000 to $570,000 based on historical transaction records from data.gov.sg.

Have HDB prices at Block 123 Hougang Avenue 1 gone up or down?

Resale prices at Block 123 Hougang Avenue 1 have increased by approximately 50.8% over the past five years. The current median price is $350,000, with the most recent sale at $570,000 in 2025-09.

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