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4712 LEGO Harry Potter Philosopher's Stone Troll on the Loose thumbnail image

4712 LEGO Harry Potter Philosopher's Stone Troll on the Loose
Images 6Description 
4712 LEGO Harry Potter Philosopher's Stone Troll on the Loose
  • Troll on the Loose thumbnail
  • Troll on the Loose thumbnail
  • Troll on the Loose thumbnail
  • Troll on the Loose thumbnail
  • Troll on the Loose thumbnail
  • Troll on the Loose thumbnail

LEGO 4712 Troll on the Loose is a Harry Potter set currently valued at $105 for new and sealed sets. Annual appreciation has averaged 5.77% since release. On the used market, values range from $24 to $30 based on condition. Secondary market prices for new and sealed sets typically fall between $89 and $110.

Set Value (New/Sealed)

This chart represents the current new/sealed value of the set Troll on the Loose since December 2018. Very high accuracy
LEGO 4712 Troll on the Loose is a Harry Potter Philosopher's Stone set released in 2002, containing 71 pieces and 2 minifigures. It recreates the Hogwarts bathroom scene from Harry Potter and the Philosopher's Stone, with a compact restroom build featuring a sink shelf that can tilt and fall. The set includes a Harry Potter minifigure in 2001 Gryffindor robes with a wand and a mountain troll equipped with a large club, depicted with a printed loincloth and vest.

A new and sealed Troll on the Loose is currently valued at around $105, with annual growth of approximately 4%, which is lower than other Philosopher's Stone sets. The average used price is $25 for those in good overall condition. The 2 included minifigs account for approximately 52% of the set's total value. New and sealed listings currently range from $100 to $120.
All regions

For Sale (New/Sealed)

 (US) *** Best US listing for Troll on the Loose ***
BrickEconomy Choice
$99.99
(US) BrickLink store Lads Brick Supply $76.00
-27.6%
(US) See Actual Pictured. Some box creases on front. Price sticker remnant on the back. $80.00
-23.8%
(US) Brand New & Sealed, But Box Has Minor Wear. Priced According. $85.00
-19.0%
(US) Sealed set, box is a little crushed on the rightside from storage. $89.72
-14.6%
(US) 4712 - Harry Potter - Troll On The Loose - New Sealed $99.99
-4.8%
(US) 4712 Harry Potter Troll On The Loose Sealed Vintage 2002 $99.99
-4.8%
(US) Brand new original set. Great condition $99.99
-4.8%
(US) Harry Potter 4712 Troll on The Loose New Sealed $100.00
-4.8%
(AU) Box in great condition overall. More photos available. $109.77
+4.5%
(US) 4712 Troll On The Loose Sealed New MISB Mint Harry Potter Sorcerer's Stone $110.00
+4.8%
(US) BrickLink store A Grateful Brick $110.00
+4.8%
(US) Harry Potter 4712 Troll on the Loose set 71 pcs 2002 BRAND NEW RARE OOP $117.49
+11.9%
(US) Harry Potter: Troll on the Loose (4712) $120.00
+14.3%
Show 2 more listings

Sales Distribution (Last 90 Days)

This chart shows the distribution of sales for the past three months of new/sealed 4712 Troll on the Loose.

Sale Trends

This chart shows the sales trends (number sold) of new/sealed 4712 Troll on the Loose.

Minifigs

Troll on the Loose contains 2 minifigs. The minifigure is exclusive to this set.
41983
Harry Potter Troll
Big Figure - Harry Potter Troll - 41983
Exclusive
Value $47.78
hp005
Harry Potter
Harry Potter with Gryffindor Shield Torso, wearing light gray legs and a black cape with stars - hp005
8 sets
Value $6.75

Sets in Harry Potter / Philosopher's Stone

76435 Hogwarts Castle The Great Hall

Theme / Subtheme Harry Potter / Philosopher's Stone
Year 2024
Pieces / Minifigs 1,732 / 11
Availability Retired
76435 LEGO Harry Potter Philosopher's Stone Hogwarts Castle The Great Hall
Retail $199.99
Value $378.52
Growth  +89.3%

76423 Hogwarts Express & Hogsmeade Station

Theme / Subtheme Harry Potter / Philosopher's Stone
Year 2023
Pieces / Minifigs 1,074 / 8
Availability Retired
76423 LEGO Harry Potter Philosopher's Stone Hogwarts Express & Hogsmeade Station
Retail $129.99
Value $125.71

76428 Hagrid's Hut An Unexpected Visit

Theme / Subtheme Harry Potter / Philosopher's Stone
Year 2024
Pieces / Minifigs 896 / 7
Availability Retired
76428 LEGO Harry Potter Philosopher's Stone Hagrid's Hut An Unexpected Visit
Retail $74.99
Value $75.00
Growth  +0.0%

75954 Hogwarts Great Hall

Theme / Subtheme Harry Potter / Philosopher's Stone
Year 2018
Pieces / Minifigs 878 / 10
Availability Retired
75954 LEGO Harry Potter Philosopher's Stone Hogwarts Great Hall
Retail $99.99
Value $119.95
Growth  +20.0%
Annual growth 6.0%

76392 Hogwarts Wizard's Chess

Theme / Subtheme Harry Potter / Philosopher's Stone
Year 2021
Pieces / Minifigs 876 / 4
Availability Retired
76392 LEGO Harry Potter Philosopher's Stone Hogwarts Wizard's Chess
Retail $59.99
Value $127.41
Growth  +112.4%
Annual growth 22.6%

4709 Hogwarts Castle

Theme / Subtheme Harry Potter / Philosopher's Stone
Year 2001
Pieces / Minifigs 682 / 9
Availability Retired
4709 LEGO Harry Potter Philosopher's Stone Hogwarts Castle
Retail $89.99
Value $403.82
Growth  +348.7%
Annual growth 5.7%

76447 Hogwarts Castle Flying Lessons

Theme / Subtheme Harry Potter / Philosopher's Stone
Year 2025
Pieces / Minifigs 651 / 7
Availability Retail (Retiring soon)
76447 LEGO Harry Potter Philosopher's Stone Hogwarts Castle Flying Lessons
Retail $79.99
Available at retail
Retiring soon

75956 Quidditch Match

Theme / Subtheme Harry Potter / Philosopher's Stone
Year 2018
Pieces / Minifigs 500 / 6
Availability Retired
75956 LEGO Harry Potter Philosopher's Stone Quidditch Match
Retail $39.99
Value $70.00
Growth  +75.0%
Annual growth 10.3%

4708 Hogwarts Express

Theme / Subtheme Harry Potter / Philosopher's Stone
Year 2001
Pieces / Minifigs 410 / 3
Availability Retired
4708 LEGO Harry Potter Philosopher's Stone Hogwarts Express
Retail $49.99
Value $198.28
Growth  +296.6%
Annual growth 7.0%

76387 Hogwarts Fluffy Encounter

Theme / Subtheme Harry Potter / Philosopher's Stone
Year 2021
Pieces / Minifigs 397 / 4
Availability Retired
76387 LEGO Harry Potter Philosopher's Stone Hogwarts Fluffy Encounter
Retail $39.99
Value $69.99
Growth  +75.0%
Annual growth 16.5%

76426 Hogwarts Castle Boathouse

Theme / Subtheme Harry Potter / Philosopher's Stone
Year 2024
Pieces / Minifigs 350 / 5
Availability Retired
76426 LEGO Harry Potter Philosopher's Stone Hogwarts Castle Boathouse
Retail $37.99
Value $84.98
Growth  +123.7%

4707 Hagrid's Hut

Theme / Subtheme Harry Potter / Philosopher's Stone
Year 2001
Pieces / Minifigs 299 / 2
Availability Retired
4707 LEGO Harry Potter Philosopher's Stone Hagrid's Hut
Retail $29.99
Value $133.72
Growth  +345.9%
Annual growth 5.3%

76395 Hogwarts First Flying Lesson

Theme / Subtheme Harry Potter / Philosopher's Stone
Year 2021
Pieces / Minifigs 263 / 4
Availability Retired
76395 LEGO Harry Potter Philosopher's Stone Hogwarts First Flying Lesson
Retail $29.99
Value $34.96
Growth  +16.6%
Annual growth 6.5%

4714 Gringott's Bank

Theme / Subtheme Harry Potter / Philosopher's Stone
Year 2002
Pieces / Minifigs 250 / 4
Availability Retired
4714 LEGO Harry Potter Philosopher's Stone Gringott's Bank
Retail $29.99
Value $200.00
Growth  +566.9%
Annual growth 6.1%

4706 Forbidden Corridor

Theme / Subtheme Harry Potter / Philosopher's Stone
Year 2001
Pieces / Minifigs 238 / 3
Availability Retired
4706 LEGO Harry Potter Philosopher's Stone Forbidden Corridor
Retail $29.99
Value $106.27
Growth  +254.4%
Annual growth 6.3%

76442 Hogwarts Castle Charms Class

Theme / Subtheme Harry Potter / Philosopher's Stone
Year 2025
Pieces / Minifigs 204 / 3
Availability Retail
76442 LEGO Harry Potter Philosopher's Stone Hogwarts Castle Charms Class
Retail $19.99
Available at retail

4704 The Room of the Winged Keys

Theme / Subtheme Harry Potter / Philosopher's Stone
Year 2001
Pieces / Minifigs 175 / 3
Availability Retired
4704 LEGO Harry Potter Philosopher's Stone The Room of the Winged Keys
Retail $19.99
Value $100.00
Growth  +400.3%
Annual growth 6.2%

76432 Forbidden Forest Magical Creatures

Theme / Subtheme Harry Potter / Philosopher's Stone
Year 2024
Pieces / Minifigs 172 / 2
Availability Retired
76432 LEGO Harry Potter Philosopher's Stone Forbidden Forest Magical Creatures
Retail $29.99
Value $32.99
Growth  +10.0%
Annual growth 5.3%

4705 Snape's Class

Theme / Subtheme Harry Potter / Philosopher's Stone
Year 2001
Pieces / Minifigs 163 / 3
Availability Retired
4705 LEGO Harry Potter Philosopher's Stone Snape's Class
Retail $19.99
Value $74.62
Growth  +273.3%
Annual growth 6.1%

4723 Diagon Alley Shops

Theme / Subtheme Harry Potter / Philosopher's Stone
Year 2001
Pieces / Minifigs 80 / 1
Availability Retired
4723 LEGO Harry Potter Philosopher's Stone Diagon Alley Shops
Retail $9.99
Value $100.00
Growth  +901.0%
Annual growth 7.0%

4721 Hogwarts Classrooms

Theme / Subtheme Harry Potter / Philosopher's Stone
Year 2001
Pieces / Minifigs 73 / 1
Availability Retired
4721 LEGO Harry Potter Philosopher's Stone Hogwarts Classrooms
Retail $9.99
Value $90.00
Growth  +800.9%
Annual growth 9.3%

4722 Gryffindor House

Theme / Subtheme Harry Potter / Philosopher's Stone
Year 2001
Pieces / Minifigs 68 / 1
Availability Retired
4722 LEGO Harry Potter Philosopher's Stone Gryffindor House
Retail $9.99
Value $70.00
Growth  +600.7%
Annual growth 6.5%

4702 The Final Challenge

Theme / Subtheme Harry Potter / Philosopher's Stone
Year 2001
Pieces / Minifigs 60 / 2
Availability Retired
4702 LEGO Harry Potter Philosopher's Stone The Final Challenge
Retail $9.99
Value $85.00
Growth  +750.9%
Annual growth 6.7%

4701 Sorting Hat

Theme / Subtheme Harry Potter / Philosopher's Stone
Year 2001
Pieces / Minifigs 48 / 1
Availability Retired
4701 LEGO Harry Potter Philosopher's Stone Sorting Hat
Retail $6.99
Value $74.96
Growth  +972.4%
Annual growth 6.2%

30407 Harry's Journey to Hogwarts

Theme / Subtheme Harry Potter / Philosopher's Stone
Year 2018
Pieces / Minifigs 40 / 1
Availability Retired
30407 LEGO Harry Potter Philosopher's Stone Harry's Journey to Hogwarts
Retail $3.99
Value $6.82
Growth  +70.9%
Annual growth 9.0%

My Collection

Troll on the Loose Reviews

31 reviews
4.8
Collectors
Investors
Eurobricks
“Even if you aren't a Harry Potter fan this set has plenty of great pieces for use in MOCs, and if you are the one-of-a-kind Troll minifig is a must have! I love this set and am very happy with the basics. I'd like to do some work and make the bathroom more like the movie but... More the TLG have given us the idea and the pieces to start with, and isn't that what LEGO is all about?”
Full review at www.eurobricks.com
Eurobricks
“The 4712 Troll on the loose set isn't that bad. It's fine. The special pieces (sink, troll, pumpkin head) compensate the not that impressive building. Offcourse this set is usefull for its parts, just like any other Harry Potter set. It's a nice addition to your Harry Potter... More collection, if you collect them. If you see it for a low price, and it includes the troll, don't let it get away!”
Full review at www.eurobricks.com

About Harry Potter Philosopher's Stone

Harry Potter and the Philosopher's was the first LEGO theme based on Harry Potter and the first of the novels. The sets are based on the movie version rather than the book version. There were 15 set released in all 2001 to 2002

Philosopher's Stone currently consists of 28 sets that as of now has run from 2001 to 2025. As of today, 4709 Hogwarts Castle is the most valuable Philosopher's Stone set with an estimated new/factory sealed value of $404.
Summary
Harry Potter Philosopher's Stone Troll on the Loose set 4712 was released in January 2002, retailing for $10, but has since been retired. New, unopened Troll on the Loose sets are valued at $105, while used sets can be found for $25.
Read more
Fans of Harry Potter can now reenact the scene of Harry, Ron, and Hermione encountering the mountain troll in the bathroom at Hogwarts. The menacing troll is holding a large club and is dressed in his fabriclike loincloth with vest, while Harry is wearing a black robe and holding his magic wand. Tilt the shelf underneath the bathroom sink and it will fall over, adding realism and fun to the scene.
Description provided by LEGO©