When people search for second-hand LEGO they often start with a practical reason: price. A used set can be more affordable than a new one. A box of loose bricks can offer hours of building for less money. A missing part can bring an old model back to life.
But that is only the surface.
Second-hand LEGO is becoming much more than a budget choice. It sits at the intersection of circular economy, sustainable play, specialist collecting, repair culture and meaningful reuse. The more seriously we look at LEGO as a product, the clearer it becomes: LEGO bricks are almost uniquely suited to be used again and again.
At Gebruiktspeelgoed.nl, we see this every day. A brick that has already been played with can still be clean, strong, useful and valuable. A set that once belonged to one family can become the start of a new building story. And a mixed box of old bricks can become work, structure, learning and pride for the people who help sort, check and prepare it.
This article looks at what LEGO, circular economy specialists, researchers and LEGO-market platforms are already saying — and what we believe that means in practice for anyone buying second-hand LEGO.
The real strength of LEGO is not newness, but longevity
The first reason second-hand LEGO deserves to be taken seriously is simple: LEGO bricks are designed to last.
In its LEGO Replay information, The LEGO Group writes: “The LEGO brick is recognized by LEGO owners to last for generations.” The same page states that LEGO is proud of the “high quality and longevity” of its brick, and that 97% of LEGO owners keep or share their bricks by passing them on to friends or family.
That is an important point. Most toys lose value quickly because they break, wear out, become outdated or are hard to reuse. LEGO is different. Its value is not limited to the first owner or the first build. A brick from an older collection can often still connect with a newer brick. A plate, wheel, window, minifigure part or Technic beam can move from one set to another, from one child to another, from one idea to another.
Our view at Gebruiktspeelgoed.nl
This is why we do not see second-hand LEGO as a lower category. We see it as LEGO that has already proven its durability.
In practice, the question is not: “Is this LEGO new?” The better question is: “Is this LEGO still clean, usable, correctly described and ready to build with?”
That is where professional handling matters. A used brick can still have full play value, but buyers need trust. They need to know whether a set is complete, whether parts are in good condition, whether instructions are included and whether the product has been checked with care.
Second-hand LEGO is not automatically good. But well-handled second-hand LEGO can be excellent.
Reuse is often better than recycling
Circular economy thinking helps explain why second-hand LEGO is such a strong category. The Ellen MacArthur Foundation describes one of the core principles of the circular economy as: “Circulate products and materials at their highest value.”
On its page about this principle, the foundation explains that this means “keeping materials in use” so that nothing becomes waste and the intrinsic value of products and materials is retained.
This matters for LEGO because the highest value of a LEGO brick is not the plastic as raw material. Its highest value is the brick as a brick.
If a LEGO part can still be clicked, sorted, built with, replaced, collected or resold, then recycling is not the first logical step. Reuse is. The product still works. The system still works. The play value still exists.
Our view at Gebruiktspeelgoed.nl
For us, this is one of the most important ideas in second-hand LEGO: reuse protects the highest value of the product.
A red 2x4 brick is not just plastic. It is a building element. A wheel is not just material. It can repair a vehicle. A minifigure part can complete a character. A single missing plate can make the difference between an incomplete set and a set that can be built again.
That is why sorting is not just a logistical task. It is value preservation. Every part that is recognised, cleaned, sorted or matched with a set has a better chance of being used again.
The circular economy sounds abstract until you hold a missing LEGO piece in your hand and realise: this tiny part can bring a whole model back to life.
LEGO itself is pushing the idea of keeping bricks in play
The shift toward reuse is not only coming from second-hand sellers. LEGO itself is actively encouraging fans to keep bricks in circulation.
In 2024, The LEGO Group launched its “Made to be Played” campaign. Annette Stube, Chief Sustainability Officer at The LEGO Group, said: “LEGO bricks are designed to be played with over and over again.” She added that LEGO wants fans to keep bricks in play by passing them on when they are no longer being used.
On its “Keep bricks in play” sustainability page, LEGO also explains that over the last five years it has learned what it takes to “efficiently collect, clean and sort donated bricks,” while testing donation outputs, charity partnerships and brick take-back pilots.
This is highly relevant. It shows that reuse is not a marginal idea anymore. Even LEGO’s own sustainability communication recognises that collection, cleaning, sorting and redistribution are serious parts of keeping bricks valuable.
Our view at Gebruiktspeelgoed.nl
This is where our daily work connects directly with the bigger sustainability conversation.
People sometimes think second-hand LEGO is simply a matter of receiving a box and reselling it. In reality, the value is created in the steps between intake and resale: sorting, checking, cleaning, separating, completing, describing and preparing.
A mixed box of LEGO has potential. A carefully processed collection has trust.
That difference matters for parents, collectors and gift buyers. Nobody wants uncertainty when buying a used set. Nobody wants to discover too late that key parts are missing, dirty, damaged or incorrectly described. A good second-hand LEGO store does not just move bricks from one owner to another. It turns unknown LEGO into reliable LEGO.
The hidden work behind second-hand LEGO
This is the part of the market that deserves more attention. Second-hand LEGO looks simple from the outside, but high-quality resale requires knowledge and patience.
A professional second-hand process may include:
- separating LEGO from non-LEGO parts;
- removing broken, dirty or unusable elements;
- sorting by part type, colour, theme or set;
- checking instructions and inventories;
- identifying missing parts;
- cleaning bricks safely;
- describing condition honestly;
- deciding whether something should be sold as complete, incomplete, loose parts or bulk.
This is where second-hand LEGO becomes a craft.
LEGO’s own cleaning advice also shows why care matters. The company recommends cleaning LEGO pieces by hand using water no hotter than 40°C, with a soft cloth or sponge, and notes that higher temperatures may affect brick quality.
Our view at Gebruiktspeelgoed.nl
We believe second-hand LEGO should be treated with the same seriousness as new LEGO, but with a different kind of expertise.
New LEGO is about sealed certainty. Second-hand LEGO is about verified trust.
That means being honest about what something is. Is a set complete? Are stickers present? Is the box included? Are replacement parts used? Are instructions original, digital or missing? Is a minifigure complete? Are parts clean enough to be sold confidently?
This is also why second-hand LEGO should not be reduced to “cheap LEGO”. The work behind it has value. Good second-hand LEGO is not simply found; it is prepared.
Resale is becoming a serious LEGO market
The second-hand LEGO market is not a small niche anymore. BrickLink describes itself as “the world’s largest online marketplace” for buying and selling LEGO parts, minifigures and sets, both new and used.
The LEGO Group acquired BrickLink in 2019, calling it the world’s largest online LEGO fan community and marketplace. The company said the acquisition would strengthen its engagement with adult fans.
That tells us something important: the market around used parts, discontinued sets, minifigures and specialist LEGO inventory is not accidental. It is part of how modern LEGO culture works.
Families may buy second-hand LEGO because it is affordable. Collectors may buy it because a set is retired. Builders may buy it because they need one exact element. Adult fans may buy it because they are designing a custom model. These are different motivations, but they all depend on the same idea: LEGO keeps value after its first sale.
Our view at Gebruiktspeelgoed.nl
We see the same pattern in our own work. Customers are not only looking for “a cheaper toy”. They are often looking for something specific.
Sometimes they need missing parts. Sometimes they want a retired theme. Sometimes they want minifigures. Sometimes they want loose bricks for free building. Sometimes they want a gift that feels more sustainable and more meaningful than buying new.
That is why second-hand LEGO is a specialist category. It requires product knowledge, transparent descriptions and a different relationship with the customer. You are not only selling a box. You are helping someone continue a building story.
Current research confirms that circulation depends on value awareness
Recent academic research is also beginning to treat used LEGO as a serious circular economy case.
A 2025 study in the Journal of Cleaner Production investigates the circulation of used LEGO products and the role of circular business models that support peer-to-peer resale. The study is based on interviews with BrickLink employees and resellers, followed by a survey of 1,238 LEGO consumers. It found that 40% of respondents would resell LEGO bricks they no longer wanted, and that consumers are more likely to participate in resale when they better understand the financial value of the products.
The Maastricht University publication page for the same research also describes LEGO as a “durable, mono-material, modular product” that is well suited for the circular economy, while noting that only an estimated 3% of all LEGO bricks are available for circulation or resale.
This is one of the most important insights for the second-hand LEGO sector. The issue is not only whether LEGO can be reused. It clearly can. The issue is whether owners know how, where and why to pass it on.
Our view at Gebruiktspeelgoed.nl
This research matches what we see in practice.
Many people have LEGO at home but do not know its value. They may think an incomplete box is not worth much. They may not realise that specific parts, minifigures, colours or older themes can still be useful. They may leave LEGO in storage for years because selling, sorting or identifying it feels overwhelming.
That is where professional second-hand stores can play a real role. We can turn uncertainty into circulation.
When LEGO is sorted, checked and made understandable again, it becomes easier for the next buyer to trust it. And when sellers understand that their old LEGO still has value, they are more likely to pass it on instead of letting it disappear into a cupboard, attic or waste stream.
The sustainability challenge is bigger than materials alone
LEGO has been investing heavily in sustainability and alternative materials. At the same time, the company’s own efforts show how difficult material change can be.
AP reported that LEGO stopped a project to make bricks from recycled plastic bottles because the new material did not reduce carbon emissions as hoped. The company continued searching for more sustainable materials, but the case showed that changing the material behind the brick is technically complex.
The broader lesson is clear: sustainable materials matter, but they are not the only answer. For products that already exist and still function well, reuse is one of the most direct sustainability strategies available.
Our view at Gebruiktspeelgoed.nl
This is where second-hand LEGO becomes very practical.
We do not need to wait for a future material breakthrough to make existing LEGO more sustainable. The bricks are already here. They already work. They already fit into the system. Every reused brick stretches the value of the original production over a longer life.
That does not mean second-hand LEGO solves every sustainability problem. It does not. But it is a concrete, immediate and understandable step.
A reused set is not a theory. It is a real product that does not need to be newly produced for someone to enjoy building.
Second-hand LEGO changes how children play
There is also a play-related reason to take second-hand LEGO seriously. New boxed sets often invite children to build one intended model. That can be valuable, especially for concentration, instruction-following and fine motor skills. But second-hand LEGO, especially mixed bricks, often invites a different kind of play: open-ended building.
A box of reused bricks does not always tell a child exactly what to make. That can be a strength. It invites experimenting, rebuilding, combining colours, inventing stories and solving problems.
This connects to a broader understanding of play as something active and developmental. LEGO Replay says donated bricks help children “build, dream, and explore new worlds,” and describes reused bricks as opportunities for learning and growth.
Our view at Gebruiktspeelgoed.nl
We believe second-hand LEGO often gives children more freedom.
A new set can feel finished once the instructions are complete. A second-hand collection can feel like a beginning. Children can mix, change, break apart and rebuild without the same pressure to keep everything perfect.
That is especially valuable for families who want more creative play and less screen time. A box of second-hand LEGO can become a city today, a spaceship tomorrow and a sorting challenge the day after.
Second-hand LEGO does not only extend the life of bricks. It can also extend the imagination of the builder.
Social value: the part of reuse that is often forgotten
There is one more layer that is central to Gebruiktspeelgoed.nl: the social value of the work itself.
Second-hand LEGO does not prepare itself. It takes hands, attention, structure and patience. For us, that process is not just an operational necessity. It is part of the mission.
Sorting bricks, checking sets, preparing orders and organising parts are real tasks. They require focus and care. They create visible results. For people who benefit from structured, meaningful work, LEGO can be a very suitable material: concrete, recognisable, playful and precise.
Our view at Gebruiktspeelgoed.nl
This is why we say that every purchase creates more than one kind of value.
There is value for the buyer, who receives LEGO that can be used again. There is value for the environment, because existing bricks stay in circulation. And there is value for the people who help make that circulation possible.
That combination is what makes second-hand LEGO powerful. It is not only a product category. It can be a circular and social model at the same time.
What buyers should expect from a good second-hand LEGO store
As the second-hand LEGO market grows, quality standards matter more. Buyers should not only ask whether something is cheap. They should ask whether it is trustworthy.
A good second-hand LEGO seller should be clear about:
- whether a set is complete or incomplete;
- whether minifigures are included;
- whether instructions or boxes are included;
- whether parts are original LEGO;
- whether parts are new, used or mixed;
- whether there are colour substitutions;
- whether stickers are present or damaged;
- how products are checked, cleaned and packed.
This is how second-hand LEGO becomes a mature market. Not by pretending used products are new, but by describing them honestly and professionally.
Our view at Gebruiktspeelgoed.nl
Transparency is the foundation of trust.
We believe customers can handle imperfections if they are clearly explained. A set may be incomplete and still be valuable. A box may be missing and the model may still be perfect to build. A part may show light use and still function fully.
The problem is not that second-hand LEGO has a history. The problem is when that history is unclear.
That is why our role is not only to sell LEGO. It is to translate used LEGO into reliable information for the next owner.
Conclusion: second-hand LEGO is becoming an industry voice of its own
Second-hand LEGO is no longer just an alternative for people who want to spend less. It is becoming part of a bigger conversation about circular retail, sustainable play, specialist collecting, repair culture and social value.
LEGO itself encourages fans to keep bricks in play. Circular economy experts argue that products should stay in use at their highest value. BrickLink shows that used LEGO parts, minifigures and sets form a serious global marketplace. Current research confirms that LEGO is unusually well suited to circular resale, but that circulation depends on value awareness, trust and practical systems.
At Gebruiktspeelgoed.nl, this is exactly where we want to contribute.
We believe second-hand LEGO deserves professional attention. It should be sorted with care, cleaned safely, checked honestly and described transparently. It should not be treated as leftover plastic, but as a building system with years of play still ahead of it.
Second-hand LEGO is not second choice.
It is responsible play, specialist reuse and meaningful work — one brick at a time.
LEGO® is a trademark of the LEGO Group. Gebruiktspeelgoed.nl is not affiliated with, authorised by, endorsed by or sponsored by The LEGO Group.
