Which LEGO Themes Give the Best Investment Returns?

Category: Investing

By BrickBucks Team

12 min read

We analyzed 2,194 retired LEGO sets across 51 themes to find out which ones actually deliver the best post-retirement returns. The results surprised us — and they'll probably surprise you too.

Everyone has opinions about which LEGO themes make the best investments. Star Wars is king. Friends is trash. Ninjago is for kids. You've heard it all. The problem is that most of these opinions are based on vibes, not data.

We decided to settle the debate the only way that matters — by analyzing the actual numbers. We pulled post-retirement pricing data on 2,194 retired LEGO sets across 51 themes, comparing what each set originally retailed for against post-retirement secondary market prices. We calculated total growth, annualized returns, and the percentage of sets in each theme that doubled in value.

Some of the results confirmed conventional wisdom. Others completely overturned it. Here's what the data actually says.

The Full Rankings: Average Annual Growth by Theme

Before we break things down, here's the big picture. These are the top-performing themes ranked by average annual growth rate, filtered to themes with at least 10 retired sets so we're working with meaningful sample sizes:

Now let's dig into what these numbers actually mean — and what drives the themes at the top.

Tier 1: The Elite Performers (14%+ Annual Growth)

Ideas — 17.6% Annual Growth (31 Sets)

Ideas sits at the top of the mainstream themes for a reason. Every Ideas set starts as a fan submission that earned 10,000 supporter votes — which means there's a passionate built-in audience before the product even hits shelves. That enthusiasm translates directly into secondary market demand.

Ideas sets also have shorter production runs than most themes, typically 12 to 24 months. Combine that with genuinely creative, unique designs — the Saturn V, Ship in a Bottle, Treehouse — and you get a theme where 72% average total growth is the norm, not the exception. The variability comes from subject matter — sets tied to beloved franchises or universal concepts outperform more niche subjects — but the floor is high.

Architecture — 17.4% Annual Growth (14 Sets)

Architecture is the quiet overachiever. These compact skyline and landmark builds average a staggering 658% total growth, and 29% of retired Architecture sets have doubled in value. The numbers look almost too good — and part of it is that the earliest Architecture sets have had a long time to compound. But even controlling for age, Architecture's annual returns are elite.

The thesis is simple: Architecture sets appeal to people who don't consider themselves LEGO collectors. They're display pieces for offices, bookshelves, and living rooms. That crossover demand persists even when the broader LEGO resale market cools. At $40–$130 retail, they're also accessible for lower-capital investing with minimal downside — almost every retired Architecture set trades above retail.

Icons — 16.5% Annual Growth (32 Sets)

The Icons theme (formerly Creator Expert) houses some of LEGO's most coveted products: Modular Buildings, large display sets like the Titanic and Eiffel Tower, and licensed vehicles like the Ford Mustang and Volkswagen Camper Van. At 16.5% average annual growth, it sits comfortably in the elite tier.

Modular Buildings are the backbone. Since 2007's Cafe Corner, LEGO has released one new Modular per year, and every single one has appreciated after retirement. The series-collecting dynamic is powerful — buyers who miss one during its retail run will pay aftermarket prices to complete their street. Green Grocer originally retailed for $150 and has sold for over $3,000 sealed. That pattern repeats year after year.

Speed Champions — 14.3% Annual Growth (38 Sets)

Here's one that surprises people. Speed Champions — those small $20–$50 car sets — post a 14.3% average annual growth rate. That's higher than Star Wars. Thirty-two percent of retired Speed Champions sets have doubled in value.

The secret is crossover demand. Speed Champions sets feature real licensed brands — Ferrari, Porsche, McLaren, Lamborghini, Aston Martin — and car enthusiasts buy them regardless of whether they collect LEGO. That second demand pool, combined with low retail prices and relatively short production windows, creates an environment where small outlays generate strong percentage returns. At an average retail of just $25, Speed Champions is one of the most capital-efficient investment themes in LEGO's catalog.

BrickHeadz — 14.0% Annual Growth (127 Sets)

BrickHeadz is the data story that nobody expected. With 127 retired sets analyzed, this is a large sample — and the numbers are undeniable. Average total growth of 161%. Forty-three percent of sets have doubled. That's the highest doubling rate of any theme with a significant sample size.

At $10–$15 retail and an average post-retirement value of $37, these aren't life-changing individual investments. But they're remarkably efficient. The low price point makes them accessible, the small box size makes storage trivial, and the licensed character variants (Star Wars, Marvel, DC, Disney) create genuine collectibility. Early waves from 2017–2018 are now trading at 3–5x retail. If you're looking to deploy small amounts of capital with a high hit rate, BrickHeadz is statistically one of the best options.

Tier 2: Strong and Reliable (11–13% Annual Growth)

Star Wars — 12.2% Annual Growth (165 Sets)

Star Wars is the theme everyone thinks of first when they hear "LEGO investing" — and at 12.2% average annual growth across 165 retired sets, the reputation is earned. It's not the highest performer anymore (Ideas, Architecture, and Icons all beat it on annual returns), but what Star Wars offers is unmatched depth and liquidity.

With 165 retired sets in our dataset, Star Wars provides the largest sample of any premium theme. Forty-nine sets have doubled — a 30% hit rate — and the average retired Star Wars set has gained 100% total growth. UCS sets are where the biggest individual returns live: the Millennium Falcon, Star Destroyer, and AT-AT routinely post 200–400% appreciation. But even mid-range Star Wars sets outperform the overall LEGO average.

The liquidity advantage matters. Star Wars sets sell fast on the secondary market because the buyer pool is enormous — kids, adult fans, and investors all participate. If you need to exit a position, a retired Star Wars set will typically find a buyer faster than an equivalent Architecture or Ideas set. For larger portfolios where liquidity matters, Star Wars remains a cornerstone theme.

Ninjago — 12.1% Annual Growth (162 Sets)

This is the biggest surprise in the data — and the one that challenges the most assumptions. Ninjago, widely dismissed as a kids' play theme, posts a 12.1% average annual growth rate. That's virtually identical to Star Wars (12.2%). And on hit rate, Ninjago actually wins: 65 of 162 sets have doubled, a 40% doubling rate compared to Star Wars's 30%.

Read that again. Ninjago has a higher percentage of sets that double in value than Star Wars does.

The top performers are genuinely impressive. The Monastery of Spinjitzu (70670) has gained 318% from its $80 retail price, growing at 20.8% annually. Killow vs. Samurai X (70642) is up 474% from $50. The Ultra Dragon (70679) gained 245% from $85. Even $10 Spinjitzu spinner sets regularly hit 200–250% growth.

Why does Ninjago outperform expectations so dramatically? Three reasons. First, the theme has run continuously since 2011 — that's over 14 years of kids growing up with it, and those kids are now adults with disposable income and nostalgia. Second, Ninjago sets feature unique, exclusive minifigures that can only be obtained in specific sets. Third, Ninjago's production cadence retires sets relatively quickly — typically 12–18 months — which creates scarcity faster than themes like City or Friends where sets linger on shelves for years.

The conventional wisdom that Ninjago is a poor investment theme is flat-out wrong. The data says it belongs in the same conversation as Star Wars.

Creator — 11.9% Annual Growth (102 Sets)

The Creator theme (not to be confused with Creator Expert/Icons) is LEGO's bread-and-butter original-design line — 3-in-1 builds, animals, houses, vehicles. At 11.9% annual growth across 102 retired sets, it's a steady performer. Twenty-nine sets have doubled (28% hit rate), and the average retail price is just $25 — making it another strong option for capital-efficient investing.

Creator's advantage is simplicity: original LEGO designs with no licensing costs, hitting broad appeal. The 3-in-1 format gives each set inherent replayability and builder appeal, which supports long-term demand. Focus on the larger, more detailed Creator sets ($40+) for the best returns — the sub-$15 polybag-style sets don't tend to appreciate meaningfully.

DC Comics Super Heroes — 11.8% Annual Growth (46 Sets)

DC posts slightly higher annual growth (11.8%) than Marvel (11.1%), though both are solid. The DC number is driven significantly by Batman — exclusive Batmobile and Batcave sets with rare minifigures tend to appreciate well. The 39% doubling rate is one of the highest outside Tier 1. The key risk is movie dependency: sets tied to films that underperformed tend to lag.

Technic — 11.7% Annual Growth (82 Sets)

Technic is a two-tier story. The large flagship sets — Porsche 911 GT3 RS, Lamborghini Sian, Bugatti Chiron — post exceptional returns thanks to crossover appeal with automotive enthusiasts. But only 15% of Technic sets have doubled, meaning the duds are real. Smaller generic trucks and construction vehicles in the $30–$80 range rarely appreciate meaningfully. The investment playbook for Technic is straightforward: stick to the licensed supercars and ignore the rest.

Minecraft — 11.6% Annual Growth (68 Sets)

Minecraft LEGO sets ride on the most popular video game ever made. At 11.6% annual growth with a 25% doubling rate, Minecraft quietly delivers strong returns. The large sets — The Mountain Cave, The Deep Dark Battle — perform best, while the $20–$30 range is more variable. Minecraft's staying power as a cultural phenomenon supports long-term demand, and the exclusive Minecraft character minifigures add collectibility.

Harry Potter — 11.6% Annual Growth (59 Sets)

Harry Potter's annual growth (11.6%) is solid but perhaps lower than many investors expect. The data tells an interesting story: only 10% of Harry Potter sets have doubled, which is the lowest doubling rate in Tier 2. But the average annual rate is still strong because Harry Potter has very few outright losers — the floor is high even if the ceiling is lower than themes like Ninjago or BrickHeadz.

The cyclical release pattern helps: LEGO releases Harry Potter in waves with multi-year gaps between them, and when supply dries up, everything appreciates. Hogwarts Castle sets and any set with exclusive character minifigures are the strongest picks. The franchise's deep emotional resonance with fans ensures sustained demand.

Marvel Super Heroes — 11.1% Annual Growth (125 Sets)

Marvel's large sample (125 sets) delivers consistent results: 11.1% annual growth, 75% average total growth, and a 29% doubling rate. The big display sets — the Daily Bugle, Hulkbuster, and Avengers Tower — are the star performers. Sets tied to popular MCU films with exclusive minifigures tend to do best. The challenge is selectivity: not every Marvel set appreciates equally, and movie-tie-in sets from underperforming films can lag.

Tier 3: Moderate Returns (8–10% Annual Growth)

Jurassic World — 9.8% Annual Growth (36 Sets)

Jurassic World posts nearly 10% annual growth with an 11% doubling rate. The large dinosaur sets — particularly those with exclusive dinosaur molds — drive the returns. The theme is movie-dependent, so timing matters: sets from peak-hype releases tend to do better than those from quieter periods. Solid but not spectacular.

City — 8.9% Annual Growth (205 Sets)

City is LEGO's highest-volume theme with 205 retired sets in our dataset, and at 8.9% annual growth, it underperforms relative to the collector-focused themes. Only 10% of City sets have doubled. The play-oriented design, enormous production runs, and constant new releases all work against scarcity and collector demand. That said, 8.9% annual growth still beats most traditional investments — and the occasional standout City set (police stations, fire headquarters, large train sets) can surprise. It's just not where you want to concentrate capital.

Disney — 8.0% Annual Growth (86 Sets)

Disney underperforms relative to its brand recognition, averaging 8.0% annual growth across 86 sets. The large display sets — Disney Castle, Disney Train and Station — do perform well, but smaller children's sets bring the average down significantly. Only 12% of Disney sets have doubled. The investment thesis here is narrow: focus exclusively on the premium adult-oriented Disney sets and avoid the kids' line entirely.

Tier 4: Below Average (<6% Annual Growth)

Friends — 5.4% Annual Growth (195 Sets)

Friends is the weakest major theme in the dataset. At 5.4% annual growth and a 6% doubling rate across 195 sets, it's the one theme where the "vibes-based" conventional wisdom is completely correct. High production volumes, play-focused design, constant turnover, and limited collector appeal all suppress secondary market values. Unless a Friends set contains a genuinely unique element, expect minimal appreciation.

What the Data Tells Us About LEGO Investing

Looking at these numbers across 2,194 sets and 51 themes, a few patterns emerge that matter more than any individual theme ranking:

Crossover demand wins. The top-performing themes all attract buyers from outside the core LEGO collector community. Speed Champions pulls car enthusiasts. Architecture pulls interior design fans. Technic flagships pull gearheads. When a set draws from multiple demand pools, it creates stronger price support and higher ceilings.

Sample size matters. Ideas (17.6%) and Architecture (17.4%) post the highest annual growth — but with 31 and 14 retired sets respectively, the sample is smaller. Star Wars and Ninjago at 12% annual with 160+ sets each give you much more statistical confidence. Both can be true: Ideas/Architecture are elite performers and Star Wars/Ninjago are safer large-sample bets.

Hit rate is underrated. Average annual growth tells you about typical returns. But the doubling rate tells you about consistency. BrickHeadz (43%), Ninjago (40%), DC Super Heroes (39%), Speed Champions (32%), and Star Wars (30%) are the themes where the highest proportion of sets double in value. If you're building a diversified portfolio, hit rate matters as much as average return.

Nostalgia is a force multiplier. Ninjago's stellar performance is hard to explain without acknowledging the nostalgia factor. Kids who grew up with Ninjago in 2011 are now in their 20s with income and collecting instincts. The same dynamic boosted Star Wars sets for the original trilogy generation. Watch for themes where a generation of fans is aging into purchasing power — it's one of the most reliable predictors of future appreciation.

Volume kills returns. City (205 sets, 8.9%) and Friends (195 sets, 5.4%) are the two highest-volume themes — and the two worst performers. High production volume means more supply competing on the secondary market, which compresses margins. Themes with shorter production runs and faster retirement cycles (Ideas, Speed Champions, Ninjago) create scarcity more efficiently.

Your Purchase Price Matters More Than Theme Selection

Here's the insight that separates data-driven investors from casual ones: theme selection gets you into the right neighborhood, but what you pay determines the actual return. A Ninjago set bought at 30% below retail will almost certainly outperform a Star Wars UCS set bought at full price. Your cost basis is the one variable you have complete control over.

The most successful LEGO investors systematically reduce their purchase price through deal stacking — discounted gift cards, cashback rewards, credit card optimization, loyalty points, and retailer price-matching. These tactics can cut 20–35% off your effective cost on every buy, regardless of whether the set is on sale or not. Applied consistently, that's a compounding advantage that dwarfs theme selection.

We put together a free guide that breaks down every cost-reduction tactic step by step — the same playbook experienced LEGO investors use to consistently buy below retail. Download the BrickBucks Gameplan and start stacking your savings today.