About LEGO Building Systems

LEGO 40505 LEGO Building Systems is part of the LEGO Promotional LEGO House theme, contains 1,211 pieces. Its original US MSRP was $99.99. BrickPicker tracks live retailer pricing across Amazon, Walmart, Target and LEGO.com, eBay sold history, BrickLink part-out value, retirement forecasts and an investment score for LEGO Building Systems.

Answered live from BrickPicker’s market tracking, review analysis and retirement model — these update as the data does.

What is LEGO 40505 LEGO Building Systems worth today?

BrickPicker currently values a sealed LEGO Building Systems at $130.68, based on 12 eBay sales over the last 180 days. That is 31% above its original $99.99 US retail price. The full price history is on this page.

How has LEGO 40505 LEGO Building Systems performed compared with its retail price?

It is still available at retail, and sealed examples currently trade around $130.68 versus a $99.99 MSRP. Retirement is usually the catalyst that moves a set's aftermarket price. BrickPicker subscribers get the full Max Profit analysis for this set, which weighs eBay sold trends, retirement timing, liquidity and reviewer sentiment into one verdict.

Is LEGO 40505 LEGO Building Systems retired?

No, it is currently available at retail. BrickPicker tracks its availability across major US retailers daily.

How good is LEGO 40505 LEGO Building Systems according to reviews?

LEGO Building Systems holds a BrickScore of 68 (Mixed Reviews), the consensus of 6 expert reviews from 6 sources. Read the full review analysis →