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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 431% from an original retail price of $3.99. Annual appreciation has averaged 4.38% since release. On the used market, values range from $15 to $20 based on condition.

Basic Building Set Value (New/Sealed)

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

Basic Building Set has climbed about 4.4% a year since retirement and is worth around $21 sealed. If the forecast is right, it keeps going, to about $26 in five years. The average used price is $18 for those in good overall condition. New and sealed listings currently range from $23 to $50.

All regions

All regions 4
United States 4

For Sale (New/Sealed)

	(US) Classic Creative Supplement Building Toy Set (303 Pieces) 10693 - NEW	BrickEconomy Choice $20.50
	(US) Classic Blocks Set 10693 Building Toy Set	$24.00 +13.3%
	(US) Classic Creative Supplement Bright (10694) 303 Pcs IDEAS Included	$29.99 +41.6%
	(US) Vintage 1987 Lego Basic Building Set #303 NEW IN BOX	$49.95 +135.8%

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Basic Building Set Questions

How much is the Basic Building Set set worth?

Sealed in its box, Basic Building Set is currently valued at $21. That is down 3% on three months ago. Used copies are worth about $18.

Is LEGO 303 Basic Building Set still available?

No. Basic Building Set is retired. New copies now come only from the secondary market, where sellers on eBay and BrickLink set the price.

How has LEGO 303 Basic Building Set performed since its release?

Basic Building Set is now worth 431% more than its $3.99 retail price, or roughly 4.4% a year on average. That is a little ahead of the Basic average of 3.8% a year.

What is the one-year forecast for LEGO 303 Basic Building Set?

In twelve months, Basic Building Set could be worth around $22, about 3% more than today. Like any forecast, this is an estimate.

How big is LEGO 303 Basic Building Set?

Basic Building Set has 33 pieces, or $0.12 per piece at retail.

Top lists

Top LEGO Sets by Growth 1980s Most Valuable LEGO Sets

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

$21.18

Growth

+430.83%

Annual growth

+4.38%

90-day change

-3.11%

1-year growth

+3.48% (12 month outlook)

Future growth

+4.42% (2-5 year outlook)

Used

Value

$17.58

Range

$15.32 - $19.76

Quick Buy

eBay

In stockBuy

Best price

$49.95

*Listings are for new/sealed sets.

Set Predictions

New/Sealed

Today's value

$21.18

1 year forecast

$21.92+3.48%

5 year forecast

$26.06+23.03%

Weaker outlook

Stronger outlook

The forecast puts 303 Basic Building Set at about $26.06 in five years. Most sets have a stronger outlook.

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

+3.83% (this set +4.38%)

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

Community Stats

Basic Building Set currently ranks #367 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

#367Basic Building Set

#368Basic Building Set

#369Family Bucket

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.

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Set Pricing Models

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

New/Sealed

Machine Learning/AI Model

Value (today)

$21.18

Accuracy

0.960200 Very high

Forecast Model

Value (in a year)

$21.92

Value (in 2 years)

$22.81

Statistical Model

Value (today)

$25.33

Value (in a year)

$25.51

Value (in two years)

$25.69

Accuracy

0.003668 Very low

Used

Machine Learning/AI Model

Value (today)

$17.58

Value (low range)

$15.32

Value (high range)

$19.76

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)

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