Editor of Brick by Brick, adult LEGO fan and collector
I'm Jonny Utah, the editor behind Brick by Brick. I'm an adult LEGO fan who built this site to answer the questions I kept running into as a collector: which set is worth the money, whether a retiring set is likely to hold its value, and what to buy for someone else.
Every guide and comparison here starts from the same sources: our catalog of official sets for piece counts, years and inventories; current market pricing; and community feedback from Reddit and YouTube. Where a page uses AI-assisted summaries it says so, and the numbers on it come from that data, not from the model. I don't build every set I write about, and the site never claims otherwise. When an article draws on hands-on experience with a set, it says so in the text.
I also build the tools on this site, from BlockTalk to the price-per-piece and display-space calculators, because I wanted them for my own collection. The full methodology is on the How We Review page.
Full methodology: How We Review.
The LEGO Modular Buildings still on sale in 2026, ranked by how soon you need to buy them, with prices, piece counts and the recently retired sets.
A 36-week homeschool STEAM plan built on LEGO robotics, with weekly builds, code, science and math, a grading rubric, and what to buy now that LEGO has retired SPIKE Prime and MINDSTORMS Robot Inventor.
Many adults build LEGO to switch off. The sets that suit it best share a few traits, repetitive steps, clear instructions and a calm subject. Here are the ones on sale now, grouped by how much time and attention you have, and what to skip.
Seven LEGO sets that are still on sale and make a good first build for an adult, all between about 600 and 960 pieces, plus how to pick a first set by interest and what to try next.
A practical guide to collecting LEGO sets for value. When and how to buy below list price, what an expected exit date tells you, how to store a sealed box so it keeps its value, what condition does to price, and how to sell after fees and shipping without giving the gain away.
A line follower steers by turning in proportion to how far a downward-facing color sensor reads from the edge of a line. Build one with Pybricks Python, from calibration to PID tuning.
A handful of LEGO minifigures are worth hundreds or thousands of dollars; most are worth little more than they cost. The valuable ones share a few traits, scarcity above all. Here is what they are, with the documented examples, and how to check a figure's value yourself.
Opening a LEGO set roughly halves what it would sell for. In our market data a used copy is worth a median of about half a sealed one across 451 sets, less for expensive and older sets. Here is what that means for building, keeping and the "buy two" idea.
The most valuable LEGO set ever sold in shops is the 2003 Star Wars Cloud City, with sealed copies selling for $8,000 to $15,000 in 2026. Here are the highest values in our market data, each dated, what the famous names are worth now, and what the valuable sets have in common.
Pybricks or the official LEGO firmware for SPIKE Prime and Robot Inventor? Side-by-side Python code, the features only each one has, how to install Pybricks and what FLL and WRO rules allow.
There is no measured average build time for LEGO sets, only estimates from piece count. Common estimates of an adult's pace put a 1000-piece set at roughly three to seven hours, an evening or two. Here is where those numbers come from and what speeds a build up or slows it down.
Expected exit dates for the LEGO sets retiring in 2026, the biggest December 31 retirements, every Star Wars set on the list, and the sets that are not retiring after all.
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