⌘ K
"LEGO Building Systems earns a BrickScore of 67.5 as a deeply thoughtful tribute to LEGO's history, celebrated by enthusiasts for its nanoscale ingenuity and historical depth. Its exclusivity to the LEGO House in Billund defines both its greatest strength and its greatest limitation: for those who can obtain it, reviewers call it an unparalleled piece of LEGO heritage; for most fans, it is only accessible via the secondary market."
The 40505 LEGO Building Systems is a LEGO House exclusive available only in Billund, Denmark, making it one of the most inaccessible sets in the modern LEGO catalog. Three expert reviewers from The Brothers Brick, Tiago Catarino, and Jay's Brick Blog reach a BrickScore of 67.5 with moderate agreement, reflecting genuine enthusiasm for the concept and build ingenuity alongside honest caveats about niche appeal and availability barriers. No owner aggregate data is available for this set, so the synthesis rests entirely on expert opinion.
Where they split: Agreement is moderate, with the clearest divergence being Jay's Brick Blog scoring 60 versus The Brothers Brick's 90. Jay's found the subject matter too niche and the build only okay without deep LEGO history context, while The Brothers Brick called it the finest homage to LEGO history available in a box. Tiago Catarino sat in the middle at 82, appreciating the concept while noting practical frustrations with availability and the loose axle connections.
Is this a smart buy? BrickPicker's data-grounded investment verdict.
Unlock the Max Profit Opinion: our stance (buy / accumulate / hold / pass), the reasoning, the exact data behind it (eBay + BrickLink comps, CAGR vs MSRP, our retirement model), and whether the reviewer community agrees.
"There is no better homage to the history of The LEGO Group available in a box."
The Brothers Brick
"I love what this product represents for both the brand and us LEGO fans, which certainly drives the appeal for such a thing even higher"
Tiago Catarino"There is no better homage to the history of The LEGO Group available in a box."
"I love what this product represents for both the brand and us LEGO fans, which certainly drives the appeal for such a thing even higher"
