Growth Calculator

What could a professionally curated collection of rare LEGO sets become? Choose an amount and a holding period, and explore three scenarios.

Starting amount

Holding period

We generally suggest planning to hold for at least ten years. Shorter periods are shown for illustration.

The Market Average

11%

per annum

£100,000 could grow to, after 10 years:

£283,942

Independent academic research covering 2,300+ sets from 1987 to 2015 found average annual appreciation of 11%, ahead of gold, art and equities over the period.

Our Aim

18%

per annum

£100,000 could grow to, after 10 years:

£523,384

Through selective curation of retiring and supply-constrained sets, we aim for 18% a year, an aim we deliberately set below what standout sets of this kind have often achieved on the open market.

The Standout Sets

25%

per annum

£100,000 could grow to, after 10 years:

£931,323

On the open market, many retired, hard-to-find sets of the kind we target have appreciated at 25% or more a year, and the strongest have gone far beyond that.

These rates are an average over the full hold, and growth is rarely linear: some sets climb soon after retirement, others take years to get going. Figures show the illustrative market value of the sets; our fees (set out in your client agreement) are separate. Not a forecast or promise: values can fall as well as rise, and past performance is no guide to future results.

Why the Best Sets Keep Climbing

Retirement Scarcity

When LEGO retires a set, supply is fixed forever, while demand keeps growing

Sealed-Box Premium

Pristine sealed sets become rarer every year as boxes are opened and built

Global Collector Demand

Millions of adult collectors worldwide compete for a shrinking pool of retired sets

Uncorrelated Asset

Collectables have historically moved independently of stock markets

It Happens Again and Again

Documented price histories of retired sets. Explore the detail on our case studies page.

Total appreciation from launch price to documented secondary-market highs. Past performance is not a reliable indicator of future results. The independent research and press coverage behind the market figures on this page are linked in full on our Resources page.

The £6,000 Rule

Under HMRC rules, a tangible movable item (a "chattel") sold for £6,000 or less is exempt from capital gains tax. Almost every individual LEGO set sells comfortably below that threshold, and each LEGO set is generally a separate item for these purposes. That means a collection can typically grow free of capital gains tax, in a way that gains on shares and funds simply cannot.

For UK clients, that can make a meaningful difference to what you actually keep.

Tax depends on your personal circumstances and rules can change. We do not provide tax advice, and nothing on this page should be relied on as tax advice. This is our understanding of the rules, but please do not rely on it: before making any decision, ask your own accountant or tax adviser to confirm both the rules themselves and how they apply to you.

And every pound of growth belongs to you

We charge no performance fee and take no share of your gains. Our fees are fixed and disclosed, and our buying power works in your favour from day one.

What Could Go Wrong

We would rather you hear this from us. Collectables carry real risks, and knowing them is part of investing well.

Values can fall

Prices of retired sets move with collector demand, and demand for a theme or set can soften. Historically, sealed retired sets have very rarely fallen below the price paid for them, but values can go down as well as up, and returns are not guaranteed.

Re-releases

LEGO occasionally re-releases or remakes a set, which can affect the value of the original. We avoid categories prone to reissue and diversify so that no single set dominates a collection.

Condition is everything

Value depends on sets staying sealed and undamaged. That is why professional storage and handling matter, and why your sets are insured at market value while in our care.

It takes time

Growth is rarely linear. Some sets climb soon after retirement, others take years to get going, and selling takes longer than selling shares. This is a long-term hold, and we suggest planning for at least ten years.

Curious What We Would Build for You?

Every engagement begins with a conversation. Tell us what you have in mind, and we will walk you through exactly how it works.