LEGO Building Systems 40505-1
LEGO Building Systems (40505-1) is worth about $130 on the secondary market today. It has 1,211 pieces, belongs to the Promotional theme and was released in 2024. This set has retired — LEGO no longer produces it, so supply is fixed and prices are set entirely by the resale market.
- Set number
- 40505-1
- Theme
- Promotional
- Subtheme
- LEGO House
- Year
- 2024
- Pieces
- 1,211
- Minifigures
- 0
- Market value
- $130
- Released
- 2024
- Retirement
- Retired
LEGO Building Systems value by year
From $92 in 2021 to $135 in 2026 so far: +48%. Its highest year was 2026, at $135.
| Year | Value | Change |
|---|---|---|
| 2026 (so far) | $135 | +6.3% |
| 2025 | $127 | +1.3% |
| 2024 | $126 | +37.1% |
| 2023 | $92 | +0.0% |
| 2022 | $92 | +0.0% |
| 2021 | $92 | — |
Median of each year's market prices, sealed, in US dollars.
Frequently asked questions
How much is LEGO Building Systems (40505-1) worth?
LEGO Building Systems is worth approximately $130 on the secondary market today, based on current listings and completed sales. BrickStats updates this value daily.
Is LEGO Building Systems retired?
Yes — LEGO Building Systems (40505-1) has been retired by LEGO and is no longer in production. Retired sets have fixed supply, which is why their prices are driven purely by the resale market.
Why is LEGO Building Systems so expensive?
LEGO Building Systems was released in 2024 and has since retired. Once LEGO stops producing a set, the only supply is what is already in circulation, so sealed copies in good condition compete for a shrinking pool of stock. That scarcity, not the parts, is what moves the price.