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76420 LEGO Harry Potter Goblet of Fire Triwizard Tournament The Black Lake thumbnail image

76420 LEGO Harry Potter Goblet of Fire Triwizard Tournament The Black Lake
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76420 LEGO Harry Potter Goblet of Fire Triwizard Tournament The Black Lake
  • Triwizard Tournament The Black Lake thumbnail
  • Triwizard Tournament The Black Lake thumbnail
  • Triwizard Tournament The Black Lake thumbnail
  • Triwizard Tournament The Black Lake thumbnail
  • Triwizard Tournament The Black Lake thumbnail
  • Triwizard Tournament The Black Lake thumbnail

LEGO 76420 Triwizard Tournament The Black Lake is a Harry Potter set valued at $63 for new and sealed sets, up 39% from an original retail price of $44.99. The set retired in April 2025 with annual appreciation averaging 14.11% since. Used copies are valued between $51 and $58 depending on condition. Secondary market prices for new and sealed sets typically fall between $54 and $74. As it has outpaced similar retired sets over the past year, the market for the set is rising.

Triwizard Tournament The Black Lake Value (New/Sealed)

This chart represents the current new/sealed value of the set Triwizard Tournament The Black Lake since April 2025. Very high accuracy
LEGO 76420 Triwizard Tournament The Black Lake is a Harry Potter Goblet of Fire set released in 2023, containing 349 pieces and 5 minifigures. The build depicts the underwater Black Lake task with an arch ruin, two small caves, and elements that allow minifigures to appear suspended in the water. A pier section includes a lever-operated diving function, and accessories include a Grindylow figure and Viktor Krum’s shark-head element. The minifigures are Harry Potter, Viktor Krum, Hermione Granger, Ron Weasley, and a Merperson.

At around $63 for a sealed copy, Triwizard Tournament The Black Lake has averaged 14.1% a year since retirement. Our forecast sees it reaching about $80 within five years. The average used price is $52 for those in good overall condition. The 5 included minifigs account for approximately 43% of the set's total value. New and sealed listings currently range from $60 to $75. The set was available for 25 months, from March 2023 to April 2025.
All regions

For Sale (New/Sealed)

 (US) Harry Potter TRIWIZARD TOURNAMENT THE BLACK LAKE #76420 Sealed Retired
BrickEconomy Choice
$49.99
(US) Harry Potter 76420 Triwizard Tournament: Black Lake Set 349 pcs Age 8+ $55.00
-12.0%
(US) Harry Potter: Triwizard Tournament: The Black Lake 76420 New Sealed $58.00
-7.2%
(US) Triwizard Tournament: The Black Lake from BrickLink seller Builder1210 $51.99
-16.8%
(US) Triwizard Tournament: The Black Lake from BrickLink seller cebrody $53.00
-15.2%
(US) Triwizard Tournament: The Black Lake from BrickLink seller Ganraeln $54.99
-12.0%
(US) 76420 Harry Potter Triwizard Tournament The Black Lake New Retire Excellent $59.25
-5.2%
(US) 76420 Harry Potter: Triwizard Tournament: the Black Lake NEW Sealed 2023 $59.72
-4.5%
(US) Harry Potter Triwizard Tournament The Black Lake (76420) NEW SEALED $59.95
-4.1%
(US) Harry Potter LEGO Set 76420 Triwizard Tournament: The Black Lake NIB Nice $59.95
-4.1%
(US) 76420 Harry Potter Triwizard Tournament The Black Lake New in Box $59.99
-4.0%
(US) Harry Potter Triwizard Tournament: The Black Lake 76420 $60.00
-4.0%
(US) Harry Potter: Triwizard Tournament: The Black Lake (76420) New - Retired $60.00
-4.0%
(US) 76420 Harry Potter Triwizard Tournament Black Lake Factory Sealed Set NEW $60.00
-4.0%
(US) Harry Potter Triwizard Tournament The Black Lake 76420 Retired Sealed New $60.00
-4.0%
(DE) (R3/13) LEGO Harry Potter 76420 Triwizard Tournament The Black Lake NEW/MIB $60.79
-2.8%
Picked for your regionShow 35 more listings

Sales Distribution (Last 90 Days)

This chart shows the distribution of sales for the past three months of new/sealed 76420 Triwizard Tournament The Black Lake.

Sale Trends

This chart shows the sales trends of new/sealed 76420 Triwizard Tournament The Black Lake.

Market Momentum

Bullish
Since retirement, the value of 76420 Triwizard Tournament: The Black Lake has climbed steadily. It is rising faster than other retired Harry Potter sets over the past year, with its growth outpacing similar Goblet of Fire releases.
DemandTop 25% in Harry Potter
Very high demand
12 months agoToday
SupplyTypical for Harry Potter
Listings up 50% this month
12 months agoToday
Growth vs peers+20% typical for Goblet of Fire
+39% over the past year
12 months agoToday
Outlook:15% bearish·32% neutral·53% bullish
Why it's moving, signals and outlook

Triwizard Tournament The Black Lake Minifigs

Triwizard Tournament The Black Lake contains 5 minifigures. All 5 minifigs are exclusive to this set.
hp413
Harry Potter
Harry Potter wearing a Triwizard uniform with flippers - hp413
Exclusive
Value $4.08
hp415
Hermione Granger
Hermione Granger with black Gryffindor robe and medium legs, in a sleeping/awake pose - hp415
Exclusive
Value $3.15
hp417
Merperson
Merperson with a sand green body and medium nougat wavy hair - hp417
Exclusive
Value $9.94
hp416
Ron Weasley
Ron Weasley in a black Gryffindor robe with medium legs, shown sleeping and awake - hp416
Exclusive
Value $2.88
hp414
Viktor Krum
Viktor Krum with a shark theme and a dual-sided head design - hp414
Exclusive
Value $6.82

Compared with other Goblet of Fire sets

Triwizard Tournament: The Black Lake sits near the bottom of the Goblet of Fire sets, largely because its launch price was well over that of most sets above it.

#7 of 9
By growth since retail, +39%
+3%+1,204%
In the bottom quarter of the group.
$0.18 a piece
New and sealed value per piece
This set
$0.18
Typical
$0.36
About half the group's typical value per piece.
Top sets by growthSince retail
14762 Rescue from the Merpeople+1,204%
24766 Graveyard Duel+1,156%
34767 Harry and the Hungarian Horntail+860%
776420 Triwizard Tournament The Black Lake+39%

Related Sets

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Sets in Harry Potter / Goblet of Fire

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Pieces / Minifigs 265 / 3
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Triwizard Tournament The Black Lake Questions

How much is the Triwizard Tournament The Black Lake set worth?

A new, sealed copy of Triwizard Tournament The Black Lake is worth about $63 today, and most sealed copies sell for between $54 and $74. That is up 12% on three months ago. Used copies are worth about $52.

Has LEGO 76420 Triwizard Tournament The Black Lake been retired?

Yes. LEGO retired Triwizard Tournament The Black Lake in April 2025 after about 2 years on store shelves, 8 months longer than the typical Goblet of Fire set. New copies now come only from the secondary market, where sellers on eBay and BrickLink set the price.

Is LEGO 76420 Triwizard Tournament The Black Lake worth more than it cost?

Yes. Triwizard Tournament The Black Lake is now worth 39% more than its $44.99 retail price, about 14.1% a year. That is well ahead of the Goblet of Fire average of 6.6% a year.

Will LEGO 76420 Triwizard Tournament The Black Lake go up in value?

Our forecast says yes. Next year's forecast for Triwizard Tournament The Black Lake is $66, about 5% more than today. The short-term reading agrees, with the market reading bullish. Forecasts are estimates, not guarantees.

How many pieces does LEGO 76420 Triwizard Tournament The Black Lake have, and which minifigures are included?

Triwizard Tournament The Black Lake is built from 349 pieces, about $0.13 each at retail. The 5 minifigures included are Harry Potter, Hermione Granger, Merperson, Ron Weasley and Viktor Krum. Together the minifigures are worth about $27, about 43% of the set's value, and Merperson is the most valuable at $9.94. Every one of them is exclusive to this set.

Top lists

My Collection

Triwizard Tournament The Black Lake Reviews

21 reviews
4.7
Collectors
Investors
Brick Fanatics
“Drawing inspiration from The Goblet of Fire, this set recreates the second task of the Triwizard Tournament. A chunk of underwater scenery (and a malevolent mermaid) are included, as are amphibious versions of Harry Potter and Viktor Krum.”
Full review at www.brickfanatics.com
Brickset
“76420 Triwizard Tournament: The Black Lake contains everything I was hoping it would, which is no easy feat, given the expectation for a location LEGO has not produced since 2005! I think the vertical configuration looks nice and the transition between above water and... More underwater settings is exemplary, other than the superfluous rowing boat.”
Full review at brickset.com

About Harry Potter Goblet of Fire

Harry Potter and the Goblet of Fire is a subtheme of the Harry Potter theme based on the 2005 movie which contains four sets.

Goblet of Fire consists of 11 sets that ran from 2005 to 2024. As of today, 4768 The Durmstrang Ship is the most valuable Goblet of Fire set with an estimated new/sealed value of $406.
Summary
Harry Potter Goblet of Fire Triwizard Tournament The Black Lake set 76420 was released in March 2023, retailing for $45, but has since been retired. New, unopened Triwizard Tournament The Black Lake sets are valued at $63, while used sets can be found for $52 in good condition.
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Kids can stage a spellbinding contest with the LEGO® Harry Potter™ Triwizard Tournament™: The Black Lake (76420) playset. A top gift idea for kids aged 8 and up, it features a buildable underwater scene with an arch ruin, 2 caves and flexible LEGO elements to create the effect of 2 minifigures floating. There is also a pier model, with a minifigure-diving function, which can be placed on top of the underwater scene.

Iconic characters
Bring a classic Harry Potter and the Goblet of Fire™ scene to life with 5 LEGO minifigures, including Harry Potter with flipper elements and Viktor Krum with a shark head element to help them rescue Hermione Granger™ and Ron Weasley™. Fans will also be inspired to play by the Merperson minifigure, new-for-March-2023 Grindylow figure and accessory elements such as the Gillyweed potion.

Stage a magical contest – Kids can play out Triwizard Tournament™ tasks at the Black Lake from Harry Potter and the Goblet of Fire™ with this LEGO® Harry Potter™...
Description provided by LEGO©