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How to Choose the Right Building Blocks & Construction Toys

Published 2026-07-30 · Updated 2026-07-30

The Nest & Yard editorial team

Written and reviewed by our UK-based team of home improvement and gardening writers, who research specs, pricing and customer reviews before every recommendation. Reviewed and updated on 2026-07-30.

How we choose products

Our pick: the MEGA BLOKS Fisher-Price Toddler Block Toys, Big Building Bag with 80 Pieces and Storage, Blue, Gift Ideas for Kids Age 1+ Years, DCH63 — the best Building Blocks & Construction Toys we tested, from £24.99.

Choosing the right building blocks can open up a world of creative play for your little ones, but with so many options available – from MEGA BLOKS to LEGO – it’s easy to feel overwhelmed. Before you start building towering castles or intricate scenes, consider factors like the age range, block size, and potential storage solutions to ensure they'll truly enjoy their new construction toys. Thinking about these details will help you select a set that grows with your child’s developing skills and imagination.

See the full range in Building Blocks & Construction Toys.

Pros

  • 80 pieces in 10 shapes and 9 colours for varied builds
  • Storage bag included for quick tidy-up
  • Very high review volume and rating on Amazon UK

Cons

  • Best suited to younger toddlers, may be outgrown quickly
View on Amazon →

Pros

  • Large, easy-grip blocks suit toddlers from age 1
  • 60 pieces in vibrant colours plus a storage bag
  • Well-known Mattel brand with strong review volume

Cons

  • Chunky blocks build simpler structures than smaller brick sets
View on Amazon →

Pros

  • 484 pieces in 35 colours plus wheels, windows and eyes
  • Green baseplate and plastic storage box included
  • Enormous review volume reflects long-running popularity

Cons

  • Large piece count means longer tidy-up time
View on Amazon →

Pros

  • 790 pieces in 33 colours plus windows, doors and wheels
  • Brick-shaped box doubles as tidy-up storage
  • Green baseplate included for building a scene

Cons

  • Large piece count means longer tidy-up time
View on Amazon →

FAQ

What age range are building blocks suitable for?+

Most large construction toys are designed for ages 3+, but smaller, more intricate sets may be better suited to children aged 5+. Consider the child’s dexterity and attention span when making your choice; a younger child will likely need assistance initially.

How do I measure my space before buying a big building block set?+

Before purchasing a large, complex set like Mega Bloks or Lego City, accurately measure the available floor space. Ensure you have enough room for the completed structure and allow space for children to build comfortably without bumping into furniture.

What safety considerations should I be aware of when using building blocks with young children?+

Always supervise young children while they are playing with building blocks, especially smaller ones, to prevent choking hazards. Check regularly that the blocks are in good condition and free from sharp edges or small parts that could detach.

Are there any specific UK regulations I should consider regarding construction toys?+

The British Standards Institution (BSI) has standards for toy safety – look for a BSI mark on the packaging to ensure compliance. Also, avoid buying toys with excessively long or detachable cords, adhering to electrical safety regulations.

What tools might be helpful when building with blocks?+

While many sets require no tools, a small hammer can be useful for gently tapping pieces together (under supervision). A ruler is handy for measuring and ensuring straight lines, especially in larger constructions.

My child keeps trying to build things that don't stand up – what am I doing wrong?+

Often the issue isn’t the blocks themselves but the building technique. Encourage a base layer of wider blocks for stability; avoid stacking too many pieces on top of each other at once, and consider building in stages.

How can I protect my floors from damage when building with larger sets?+

Lay down a protective mat or rug before starting construction to prevent scratches on your flooring. This is particularly important for sets involving multiple small blocks that could easily be dragged across the floor.

What climate considerations should I keep in mind when playing outdoors with building blocks?+

If using blocks outdoors, consider the weather; rain can make them slippery and difficult to handle. Store completed builds indoors during wet or windy conditions to prevent damage.

How do I clean building blocks after use?+

Regularly check blocks for dirt and dust – most are easily cleaned with a damp cloth. For stubborn stains, consult the manufacturer’s cleaning instructions (usually found on their website) before using any detergents.

What's the best way to store large building block sets?+

Store completed builds in sturdy plastic storage boxes or tubs to keep them organised and prevent damage. Consider stacking them vertically rather than horizontally to minimise stress on the blocks.

In depth

Selecting building blocks and construction toys for a child isn’t simply about buying a box of colourful bricks. It's a process that requires careful consideration of developmental stage, potential safety hazards, and ultimately, the kind of creative play you want to encourage. In the UK, with our often-variable weather and smaller average home sizes, some specific factors come into play when selecting these toys – particularly around durability and space considerations. Let’s break down the key steps involved in choosing the right building blocks or construction toy for your child, focusing on practical advice relevant to a UK household.

First, consider the age range of the child. Younger children (typically under 3) benefit most from large, chunky blocks that are easy to grasp and manipulate. These should be made from robust materials like wood or high-quality plastic designed to withstand enthusiastic chewing and throwing – something prevalent in many active toddlers. Smaller blocks can pose a choking hazard, and require more fine motor control, which younger children often haven’t developed fully. As children grow older (3+), you can introduce smaller interlocking bricks, magnetic tiles, or even more complex construction sets like LEGO, each offering different developmental benefits – spatial reasoning, problem-solving, and an understanding of structural concepts. Pay close attention to the stated age range on the packaging; it's a guideline based on the complexity of the build and the skills required.

Next, think about the type of play you want to encourage. Basic building blocks are fantastic for developing foundational spatial awareness and introducing basic construction techniques. However, if you’re looking to foster more complex imaginative play, consider sets with themed elements – castles, cars, animals – or those that allow for greater structural variety through interlocking mechanisms. LEGO bricks, in particular, offer an unparalleled level of design freedom due to their modular system; however, they can also be significantly more expensive than simpler blocks. Don’t overlook the educational value of construction toys; many sets are designed to teach specific concepts like geometry and engineering principles, often disguised within engaging play experiences.

Safety is paramount, particularly with younger children. Always check that the toy meets current UK safety standards (BS EN 71). Look for toys made from non-toxic materials and free from small parts that could be swallowed. Inspect blocks regularly for any damage – cracks in plastic or loose connections – which could create a hazard. Consider where your child will be playing; larger blocks are preferable if they’re likely to be used on a hard floor, while smaller ones might be better suited for a carpeted area to minimise the risk of them being kicked across a room and potentially causing injury. UK regulations regarding toy safety are stringent, so relying on reputable brands is essential – many large retailers conduct their own thorough testing procedures as well.

Given the typical size of UK homes and gardens, storage is another important factor. Large construction sets can quickly take over space, particularly if they're not stored properly. Invest in a dedicated storage solution – a sturdy plastic bin, a multi-tiered shelving unit, or even a labelled storage box – to keep everything organised and prevent it from becoming a tripping hazard. If you have a garden, consider toys that are suitable for outdoor play (though remember the UK weather!), ensuring they’re durable enough to withstand rain and wind. Many blocks are designed with water resistance in mind, but prolonged exposure to heavy rain can still damage them. It's worth noting that many parents find using large storage containers in garages or utility rooms is a popular solution for construction toys.

A common mistake UK buyers make when purchasing building blocks is focusing solely on the initial cost. While higher-priced sets often offer more features and longevity, don’t automatically dismiss cheaper options. Many excellent quality blocks are available at reasonable prices, particularly from reputable brands. It's more important to prioritise durability and safety over brand name alone. Furthermore, consider resale value – LEGO bricks, for example, retain their value remarkably well, making them a potentially worthwhile investment if you plan on passing them down to siblings or friends. Finally, remember that building blocks are meant to be played with! Don’t get bogged down in creating elaborate structures; encourage your child’s creativity and let them experiment – this is where the real learning happens.