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Sets
Basic
Basic Building Set

303 LEGO Basic Building Set

Name: LEGO Basic Building Set
Brand: LEGO
SKU: 303-1
Availability: InStock
Rating: 4.5 (11 reviews)

Images 1

LEGO 303 Basic Building Set is a vintage Basic set from 1987 valued at $21 for new and sealed sets, up 424% from an original retail price of $3.99. Annual appreciation has averaged 4.34% since release. On the used market, values range from $15 to $20 based on condition.

Set Value (New/Sealed)

This chart represents the current new/sealed value of the set Basic Building Set since September 2017. High accuracy

LEGO 303-1 Basic Building Set is a Basic theme set released in 1987, containing 33 pieces. It includes a selection of red, blue, yellow, and black bricks in common sizes, such as 2x2, 2x3, 2x4, and a 2x10. Notable elements are printed yellow bricks featuring offset eyes and a double-sided smile/frown, enabling simple character builds.

A new and sealed Basic Building Set is currently valued at around $21, with annual growth of approximately 4%. The average used price is $17 for those in good overall condition. New and sealed listings currently range from $22 to $30. Based on current trends, this set could be valued near $22 within the next year.

All regions

All regions 4
United States 4

For Sale (New/Sealed)

	(US) Classic Creative Supplement 10693 (303 Pcs) - NEW Factory Sealed RETIRED	BrickEconomy Choice $21.99
	(US) Classic Blocks Set 10693 Building Toy Set	$24.00 +14.8%
	(US) Classic 303 Pieces New In Box	$26.99 +29.1%
	(US) Classic Creative Supplement Bright (10694) 303 Pcs IDEAS Included	$29.99 +43.5%

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	1607 Helicopter Theme Basic Year 1987 Pieces 25 Availability Retired Buy this set at eBay Bricklink	Retail $1.69 Value $8.25 Growth +388.2% Annual growth 6.7% I own this set I want this set

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My Collection

I own this set

I want this set

Set Details

Set number

303-1

Name

Basic Building Set

Theme

Basic

Year

1987

Availability

Retired

Pieces

33 (PPP $0.12)

Set Pricing

Retail price

$3.99

New/Sealed

Value

$20.90

Growth

+423.81%

Annual growth

+4.34%

90-day change

-2.53%

Used

Value

$17.35

Range

$15.32 - $19.76

Quick Buy

eBay

Buy

Lowest price

$21.99

Highest price

$29.99

*Listings are for new/sealed sets.

Set Predictions

New/Sealed

Today's value

$20.90

1 year forecast

$21.81+4.34%

5 year forecast

$25.39+21.50%

$25

$26

303 Basic Building Set is projected to be valued between $25 - $26 within five years.

Insights

Released in the Basic theme and now retired, Basic Building Set 303 draws interest for its vintage printed face bricks and late-80s nostalgia, and sealed examples have seen post-retirement appreciation, but limited theme appeal and thin trading volume make it more of a supplemental vintage hold than a primary investment.

Set Facts

The set supports open-ended construction and integrates with other Basic sets from the period.

Basic Building Set Reviews

11 ratings

4.5

Collectors

Investors

Theme Analysis

Basic

Sets

402

Years

1972 - 2003

Annual growth

+3.93% (this set +4.34%)

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

Community Stats

Basic Building Set currently ranks #368 out of the top most owned sets in Basic.

#1Building Plate, Green

#2X-Large Baseplate Grey

#3Brick Separator, Green

#4Universal Building Set

#5Basic Building Set

#368Basic Building Set

#369Basic Building Set

#370Basic 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)

$20.90

Value (in a year)

$21.81

Value (in 2 years)

$22.72

Accuracy

0.920200 High

Statistical Model

Value (today)

$25.72

Value (in a year)

$25.98

Value (in two years)

$26.24

Accuracy

0.207157 Very low

Used

Machine Learning/AI Model

Value (today)

$17.35

Value (low range)

$15.32

Value (high range)

$19.76

Accuracy

0.865200 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.

Region · United States (USD)

Theme · Light

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