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Region

Sets
Basic
Basic Building Set

504 LEGO Basic Building Set

Name: LEGO Basic Building Set
Brand: LEGO
SKU: 504-1
Rating: 4.5 (49 reviews)

Images 1

Set Value (New/Sealed)

This chart represents the current new/sealed value of the set Basic Building Set since June 2016. High accuracy

LEGO 504 Basic Building Set was a 41 piece Basic set released in 1985. The current value for a new, factory sealed Basic Building Set is estimated to be around $31. Current used prices for Basic Building Set range from $25 to $28, depending on the set's condition, with an average price of $26 for those in good overall condition.

All regions

All regions 3
United States 3

For Sale (New/Sealed)

	(US) 1986 Vintage LEGO Trial Size 25pc Basic Building Set #1523	BrickEconomy Choice $25.00
	(US) 1986 Vintage LEGO Trial Size 25pc Basic Building Set #1523	$29.99 -2.8%
	(US) Vintage Lego Systems Basic Building Set 515 New in box	$30.00 -2.7%

More sets in Basic


	540 Basic Building Set Theme Basic Year 1985 Pieces / Minifigs 626 / 2 Availability Retired Buy this set at eBay Bricklink	Value $87.66 I own this set I want this set

	550 Basic Building Set Theme Basic Year 1985 Pieces / Minifigs 569 / 2 Availability Retired Buy this set at Bricklink	Retail $42.00 Value $345.82 Growth +723.4% Annual growth 5.3% I own this set I want this set

	740 Basic Building Set Theme Basic Year 1985 Pieces 516 Availability Retired Buy this set at Bricklink	Retail $60.00 Value $295.17 Growth +392.0% Annual growth 2.6% I own this set I want this set

	730-2 Basic Building Set Theme Basic Year 1985 Pieces / Minifigs 429 / 2 Availability Retired Buy this set at Bricklink	Retail $30.00 Value $134.61 Growth +348.7% Annual growth 3.8% I own this set I want this set

	720 Basic Building Set Theme Basic Year 1985 Pieces / Minifigs 334 / 1 Availability Retired Buy this set at Bricklink	Retail $25.00 Value $202.41 Growth +709.6% Annual growth 5.3% I own this set I want this set

	350-2 Basic Building Set Theme Basic Year 1985 Pieces / Minifigs 311 / 4 Availability Retired Buy this set at eBay	Value $337.19 I own this set I want this set

	530 Basic Building Set Theme Basic Year 1985 Pieces / Minifigs 269 / 2 Availability Retired Buy this set at Bricklink	Value $145.24 I own this set I want this set

	340 Basic Building Set Theme Basic Year 1985 Pieces / Minifigs 214 / 2 Availability Retired Buy this set at eBay	Value $63.26 I own this set I want this set

	1962 Basic Building Set Theme Basic Year 1985 Pieces / Minifigs 211 / 1 Availability Retired Buy this set at eBay	Value $223.48 I own this set I want this set

	1520 Basic Building Set with Storage Case Theme Basic Year 1985 Pieces / Minifigs 210 / 1 Availability Retired Buy this set at eBay Bricklink	Retail $16.49 Value $199.99 Growth +1112.8% Annual growth 6.6% I own this set I want this set

	520 Basic Building Set Theme Basic Year 1985 Pieces / Minifigs 165 / 1 Availability Retired Buy this set at eBay	Value $38.41 I own this set I want this set

	330 Basic Building Set Theme Basic Year 1985 Pieces / Minifigs 156 / 2 Availability Retired Buy this set at eBay Bricklink	Value $83.81 I own this set I want this set

	510 Basic Building Set Theme Basic Year 1985 Pieces 106 Availability Retired Buy this set at eBay	Retail $1.50 Value $66.63 Growth +4342.0% Annual growth 8.2% I own this set I want this set

	320 Basic Building Set Theme Basic Year 1985 Pieces / Minifigs 77 / 1 Availability Retired Buy this set at eBay Bricklink	Retail $7.97 Value $43.78 Growth +449.3% Annual growth 3.9% I own this set I want this set

	508 Basic Building Set Theme Basic Year 1985 Pieces 66 Availability Retired Buy this set at eBay	Value $24.97 I own this set I want this set

	310-4 Basic Building Set Theme Basic Year 1985 Pieces 46 Availability Retired Buy this set at eBay	Retail $5.00 Value $20.00 Growth +300.0% Annual growth 3.5% I own this set I want this set

	1548-2 Helicopter Theme Basic Year 1985 Pieces 36 Availability Retired Buy this set at Bricklink	Value $101.92 I own this set I want this set

	1562-2 Basic Building Set Theme Basic Year 1985 Pieces 32 Availability Retired Buy this set at eBay Bricklink	Value $15.00 I own this set I want this set

	1965 Building Set Trial Size Offer Theme Basic Year 1985 Pieces / Minifigs 32 / 1 Availability Retired Buy this set at eBay Bricklink	Retail $1.50 Value $111.53 Growth +7335.3% Annual growth 11.4% I own this set I want this set

	304 Basic Building Set Theme Basic Year 1985 Pieces 31 Availability Retired Buy this set at eBay	Value $18.82 I own this set I want this set

	308-2 Basic Building Set Theme Basic Year 1985 Pieces 30 Availability Retired Buy this set at eBay	Value $27.03 I own this set I want this set

	1964 Basic Building Set Theme Basic Year 1985 Pieces 27 Availability Retired Buy this set at eBay	Retail $1.49 Value $15.73 Growth +955.7% Annual growth 6.1% I own this set I want this set

	1546 Aircraft Theme Basic Year 1985 Pieces / Minifigs 26 / 1 Availability Retired Buy this set at Bricklink	I own this set I want this set

	1551 Duck Theme Basic Year 1985 Pieces 6 Availability Retired Buy this set at eBay Bricklink	Retail $0.40 Value $5.14 Growth +1185.0% Annual growth 9.0% I own this set I want this set

	293-2 Basic Building Set Theme Basic Year 1985 Availability Retired	I own this set I want this set

My Collection

I own this set

I want this set

Set Details

Set number

504-1

Name

Basic Building Set

Theme

Basic

Year

1985

Availability

Retired

Pieces

Set Pricing

New/Sealed

Value

$30.84

Used

Value

$25.60

Range

$25.11 - $28.49

Quick Buy

eBay

Buy

Lowest price

$25.00

Highest price

$30.00

*Listings are for new/sealed sets.

Set Predictions

New/Sealed

Today's value

$30.84

1 year forecast

$33.38+8.24%

5 year forecast

$41.37+34.16%

$41

$42

504 Basic Building Set is projected to be valued between $41 - $42 within five years.

Basic Building Set Reviews

49 ratings

4.5

Collectors

Investors

Theme Analysis

Basic

Sets

402

Years

1972 - 2003

Annual growth

+4.60%

This set's annual growth (CAGR) vs. subtheme

Community Stats

Basic Building Set currently ranks #359 out of the top most owned sets in Basic.

#1X-Large Baseplate Grey

#2Building Plate, Green

#3Brick Separator, Green

#4Universal Building Set

#5Basic Building Set

#359Basic Building Set

#360Basic Building Set

#361Basic Building Set

About Basic

The LEGO Basic theme, which began in the 1970s, was designed to be a more general, non-thematic series of sets. Unlike the themed sets that revolve around specific stories, characters, or concepts (e.g., space, city, or pirates), the Basic theme provided a collection of standard LEGO bricks and pieces, often in a variety of colors. The goal was to encourage free building and creativity without the confines of a specific theme or narrative.

Set Pricing Models

BrickEconomy uses a number of methods to determine the value of a set.

New/Sealed

Machine Learning/AI Model

Value (today)

$30.84

Value (in a year)

$33.38

Value (in 2 years)

$35.65

Accuracy

0.820000 High

Statistical Model

Value (today)

$26.09

Value (in a year)

$26.16

Value (in two years)

$26.23

Accuracy

0.200706 Very low

Used

Machine Learning/AI Model

Value (today)

$25.60

Value (low range)

$25.11

Value (high range)

$28.49

Accuracy

0.765000 High

To learn more about how we calculate pricing and forecasting, check out our article on BrickEconomy’s Approach to LEGO Pricing and Future Value Predictions.

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