The Lego set Troll on the Loose with the set number 4712 is part of the LEGO Harry Potter™ theme. It was released in January 2002. It includes 2 minifigures. The model has 71 pieces, and we estimate it takes around < 1 hour to build. It was designed by Hans Henrik Sidenius.47 Brickfact users have this set in their collection.
The box measures 5.7 x 7.6 x 1.9 in (14.4 x 19.2 x 4.8 cm). The recommended retail price is $10.00.
Lego 4712 product data
Set Information
Availability
Release
01/2002
Retiring Status
Retired (12/2003)
Price Information
RRP
$10.00
Insiders Points (for purchase at Lego)
65
Packaging
Packaging dimensions
5.7 x 7.6 x 1.9 in
EAN (GTIN13)
5702014151604
Popularity with Brickfact users
- users have this set
- 47
47 Brickfact users have Troll on the Loose in their collection.
Based on anonymized Brickfact user collections; shown only for sets with at least 10 users. As of October 19, 2026.
LEGO 4712 price trend
Average sale price on secondary marketplaces – not the new price at retailers.
- Current market value
- $98.85
- Growth vs. RRP
- +889 % $10.00
- Range
- $92.39 – $100.60
- Average
- $98.52
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Minifigures from 4712 Troll on the Loose
The Troll on the Loose set includes 2 different minifigures, 1 of which are unique to this set. The combined value of the minifigures is $37.38, which is ~374% of the RRP of this set.
x1
Troll
Harry Potter
2002
#41983
$33.80
i
Unique
x1
Harry Potter
Harry Potter
2001
#hp005
$3.58
7 sets
Part Lists for LEGO 4712 Troll on the Loose
LEGO 4712 Frequently Asked Questions
Is LEGO 4712 still available?
LEGO has retired 4712 Troll on the Loose, and no retailer in our price comparison currently sells it new. Its market value on secondary marketplaces is $98.85.
