What the Research Says

In 2021, researchers at the Higher School of Economics in Moscow published a comprehensive study analysing over 2,300 LEGO sets sold between 1987 and 2015. Their finding: LEGO sets returned an average of 11% annually on the secondary market after retirement — outperforming large stocks, bonds, gold, and most other alternative investments over the same period.

This figure is an average. Some sets returned significantly more — large Modular Buildings and UCS Star Wars sets have delivered 15-25% annual returns. Others stagnated or lost value. The key is understanding which sets are likely to appreciate and which aren't.

Why LEGO Appreciates in Value

LEGO's business model creates a natural supply-demand imbalance:

• Planned retirement. LEGO retires sets after 1-3 years of production. Once retired, no more units are manufactured — ever. Supply is permanently fixed.
• Growing collector base. The adult LEGO market (AFOL — Adult Fans of LEGO) has grown significantly since 2015, driven by sets like the Modular Buildings line and licensed themes.
• Destruction of supply. Every sealed set that gets opened for building permanently reduces the sealed supply. This is unique to LEGO — you can't "open" a gold bar and reduce its value.
• Brand strength. LEGO has been the world's most valuable toy brand for over a decade. The brand isn't going anywhere.
• Licensed themes. Star Wars, Harry Potter, Marvel, and Disney create crossover demand from fans who aren't traditional LEGO collectors.

Which LEGO Sets Are the Best Investments?

Themes with the strongest track record:

• Modular Buildings — Every single retired modular has appreciated significantly. The theme has the most consistent track record of any LEGO line.
• UCS Star Wars — Ultimate Collector Series sets have large piece counts, limited runs, and enormous demand from Star Wars fans.
• Technic Supercars — The Bugatti Chiron, Porsche GT3 RS, and Lamborghini Sian appeal to car enthusiasts beyond LEGO collectors.
• Ideas Sets — Fan-designed sets with unique themes (Typewriter, Central Perk, Saturn V) create strong nostalgia demand.

Characteristics of sets that appreciate most:

• High piece count (2,000+ pieces)
• Strong licensed theme with enduring cultural relevance
• Limited production run or exclusive distribution
• Display-worthy design that appeals to adults
• Part of a collectible line (Modular Buildings, UCS)

The Risks of LEGO Investing

It's not all upside. Here are the real risks:

• Storage costs. LEGO boxes are bulky. Storing 50+ sealed sets requires dedicated space in a dry, temperature-controlled environment. Storage costs eat into returns.
• Liquidity. Selling LEGO isn't instant. Finding a buyer at market price can take days or weeks. This is not a liquid asset.
• Box damage. A creased corner or faded box can reduce value by 10-20%. Handling and storage quality directly affect your returns.
• Market saturation. As LEGO investing has become more popular, more people are hoarding sealed sets. Higher supply of sealed units could suppress future appreciation for common sets.
• Re-releases. LEGO occasionally re-releases popular sets (like the Taj Mahal 10256). A re-release can significantly reduce the value of the original.
• No income. Unlike stocks or property, LEGO generates no dividends or rental income. Your return comes entirely from capital appreciation.

LEGO vs Other Investments

LEGO should never replace a diversified investment portfolio. It sits alongside other alternative investments like watches, wine, art, and trading cards. The advantages over other alternatives: low counterfeiting risk (LEGO is hard to fake convincingly), transparent pricing data (BrickLink provides real-time sales data), and a massive global buyer market.

The disadvantage: it's a physical asset that takes up space, can be damaged, and requires active management.

How to Start Investing in LEGO

• Start with what you know. If you're a Star Wars fan, focus on UCS sets. If you love architecture, look at Modular Buildings. Domain knowledge helps you spot undervalued sets.
• Buy sealed from trusted sources. Factory seal integrity is critical. A specialist retailer like BuyMyBricks guarantees it. Buying from unverified sellers introduces risk.
• Use BrickLink price guides. Check the 6-month and 12-month price trends for any set before buying. Look for consistent upward movement, not spikes.
• Store properly. Keep sets in a cool, dry environment away from sunlight. Store boxes flat or upright — never stacked with weight on top.
• Keep VAT receipts. For UK tax purposes, you may need to account for capital gains on profitable sales. A VAT receipt from a registered retailer like BuyMyBricks provides a clear paper trail of your purchase price.

The Verdict

Is LEGO a good investment? The data says yes — with caveats. The right sets, bought sealed at or near retail price, stored properly, and held for 2-5+ years, have historically delivered strong returns. But it requires knowledge, patience, storage, and acceptance that not every set will be a winner. As a complement to traditional investments — and an alternative asset you can actually enjoy looking at — retired LEGO is one of the more compelling options available.