LEGO LEGO Building Systems 40505
Waiting may pay off The price is above the average.
View at Steentjesplein for €128.95
Compare 1 retailers.
Retailer prices for 40505 are sorted by the lowest delivered price when shipping is known.
Retailer pricesPrices tracked across 67 retailers, updated twice a day.
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Full price history at a glance.
Daily lowest price tracked across 3 Dutch retailers. The dotted line marks LEGO's recommended retail price.
Source: daily measurement at 3 Dutch retailers, 14 Dec 2025 – 12 Sep 2026. RRP via LEGO.com.
| Date | Price | Retailer | Stock |
|---|---|---|---|
| €128.95 | Steentjesplein | In stock | |
| €128.95 | Steentjesplein | In stock | |
| €128.95 | Steentjesplein | In stock | |
| €128.95 | Steentjesplein | In stock | |
| €128.95 | Steentjesplein | In stock | |
| €128.95 | Steentjesplein | In stock | |
| €128.95 | Steentjesplein | In stock | |
| €128.95 | Steentjesplein | In stock | |
| €128.95 | Steentjesplein | In stock | |
| €128.95 | Steentjesplein | In stock | |
| €128.95 | Steentjesplein | In stock | |
| €128.95 | Steentjesplein | In stock |
Price will likely move slightly.
Signal is mixed. Small movements are more likely than a big drop.
| Date | Price | Type |
|---|---|---|
| 2026-06-15 | €128.95 | History |
| 2026-06-16 | €128.95 | History |
| 2026-06-17 | €128.95 | History |
| 2026-06-18 | €128.95 | History |
| 2026-06-19 | €128.95 | History |
| 2026-06-20 | €128.95 | History |
| 2026-06-21 | €128.95 | History |
| 2026-06-24 | €128.95 | History |
| 2026-06-25 | €128.95 | History |
| 2026-06-26 | €128.95 | History |
| 2026-06-27 | €128.95 | History |
| 2026-06-28 | €128.95 | History |
| 2026-06-29 | €128.95 | History |
| 2026-06-30 | €128.95 | History |
| 2026-07-01 | €128.95 | History |
| 2026-07-02 | €128.95 | History |
| 2026-07-03 | €128.95 | History |
| 2026-07-04 | €128.95 | History |
| 2026-07-05 | €128.95 | History |
| 2026-07-06 | €128.95 | History |
| 2026-07-07 | €128.95 | History |
| 2026-07-08 | €128.95 | History |
| 2026-07-09 | €128.95 | History |
| 2026-07-10 | €128.95 | History |
| 2026-07-12 | €128.95 | History |
| 2026-07-13 | €128.95 | History |
| 2026-07-14 | €128.95 | History |
| 2026-07-15 | €128.95 | History |
| 2026-07-17 | €128.95 | History |
| 2026-07-18 | €128.95 | History |
| 2026-07-19 | €128.95 | History |
| 2026-07-20 | €128.95 | History |
| 2026-07-22 | €128.95 | History |
| 2026-07-23 | €128.95 | History |
| 2026-07-25 | €128.95 | History |
| 2026-07-26 | €128.95 | History |
| 2026-07-30 | €128.95 | History |
| 2026-07-31 | €128.95 | History |
| 2026-08-02 | €128.95 | History |
| 2026-08-05 | €128.95 | History |
| 2026-08-06 | €128.95 | History |
| 2026-08-07 | €128.95 | History |
| 2026-08-08 | €128.95 | History |
| 2026-08-09 | €128.95 | History |
| 2026-08-10 | €128.95 | History |
| 2026-08-11 | €128.95 | History |
| 2026-08-12 | €128.95 | History |
| 2026-08-13 | €128.95 | History |
| 2026-08-14 | €128.95 | History |
| 2026-08-15 | €128.95 | History |
| 2026-08-16 | €128.95 | History |
| 2026-08-20 | €128.95 | History |
| 2026-08-22 | €128.95 | History |
| 2026-08-23 | €128.95 | History |
| 2026-08-24 | €128.95 | History |
| 2026-08-25 | €128.95 | History |
| 2026-08-26 | €128.95 | History |
| 2026-08-28 | €128.95 | History |
| 2026-09-03 | €128.95 | History |
| 2026-09-04 | €128.95 | History |
| 2026-09-05 | €128.95 | History |
| 2026-09-06 | €128.95 | History |
| 2026-09-08 | €128.95 | History |
| 2026-09-09 | €128.95 | History |
| 2026-09-10 | €128.95 | History |
| 2026-09-12 | €128.95 | History |
| 2026-10-12 | €128.95 | Forecast |
| 2026-11-11 | €128.95 | Forecast |
| 2026-12-11 | €128.95 | Forecast |
About this set
For LEGO LEGO Building Systems (40505), we track 1 Dutch retailer, with 1 currently in stock. This set from the Promotional theme has 1,211 pieces and was released in 2024. The current lowest price is €128.95 at Steentjesplein. That works out to €0.11 per piece. The lowest price ever was €120.00 on 15 Dec 2025 at Bol.com. The set is recommended for builders aged 10 and up. The current price is above that low, so waiting for a drop may pay off. Use price history and stock data to judge whether this is a good time to buy.
Dive deeper into this set.
All about this set
The three mini-scale models in this set each represent a classic model originally built with one of the three core building systems. The Town Plan from 1955 was one of the very first LEGO System in Play products. The mini-scale DUPLO Train is a mix of sets 2700 and 2705 from the 1980s. The Technic mini-scale model is based on set 853, the flagship of the very first LEGO Technic range. The model had a functioning steering system and moving pistons in the motor. Behind the wall are nano-builds of milestone LEGO models. The set includes 19 nano-builds plus room to fill in with your own LEGO favourite. Ideal for fans of LEGO building and collectors of toy memorabilia. LEGO Building Systems set 40505 measures approximately 38 cm in width. Suitable for ages 10 and above. Price: 699 DKK. This set is exclusively available in the LEGO House retail store with a purchase limit of three sets per household.
Set details
Parts inventory
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Tile 1 x 8 with 'LEGO Building Systems' print Part ID 4162pr0108
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Tile 1 x 8 with 'LEGO House' print Part ID 4162pr0092
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Tile 1 x 1 with White Lines/Stripes print Part ID 3070bpr0213
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