Browse
- Sets
- All Sets
- New Sets
- Recently Retired Sets
- Sets Retiring Soon
- Sets Available Soon
- Set Release Rumors
- Minifigs
- All Minifigs
- New Minifigs
- Recently Retired Minifigs
- Minifigs Retiring Soon
Deals
Analysis
- Sets
- Themes
- Subthemes
- Years
- Most Valuable
- Most Expensive
- Most Owned
- BE 100 Index
- Minifigures
- Most Valuable
- Most Owned
My CollectionSign In or Up

Region

Sets
Basic
Basic Building Set

View Star Wars sets at Amazon (affiliate link)...

4221 LEGO Basic Building Set

Name: LEGO Basic Building Set
Brand: LEGO
SKU: 4221-1
Rating: 4.5 (28 reviews)

Images 3

Set Value (New/Sealed)

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

LEGO 4221 Basic Building Set was a 66 piece Basic set with 1 minifig released in 1998. The set was also called "Challenger Set 100". It consists of various bricks and slopes in black, blue, red, white, and yellow, including modified plates with wheel holders, a 3-blade propeller, lattice fences, and an antenna. The set includes small wheels with tires, decorative eyes on yellow bricks, and a diver minifigure with a dolphin shirt.

The current value for a new and sealed Basic Building Set is estimated at $10, with an average annual growth of approximately 2%. On the open market, a used set will sell in the range of $4 and $5, depending on its condition.

All regions

All regions 6
United States 2
European Union 3
United Kingdom 1

For Sale (New/Sealed)

	(US) eBay listing for Basic Building Set	$10.13 -3.0%
	(DK) The box has been pressed and dented but is unopened.	$10.22 -2.1%
	(NL) BrickLink store Schiedam Brick	$10.50 +0.6%
	(NL) Box has some damage and also a small German store sticker on it	$10.50 +0.6%
	(UK) BrickLink store Minithingsforlife	$16.50 +58.0%
	(PL) BOX HAVE SUN DAMAGE	$38.66 +270.3%

Minifigs

Basic Building Set contains 1 minifig. The minifigure is exclusive to this set.

More sets in Basic


	3026 Limited Edition Silver Brick Tub Theme Basic Year 1998 Pieces 1,201 Availability Retired Buy this set at eBay	Retail $19.99 Value $84.46 Growth +322.5% Annual growth 3.7% I own this set I want this set

	3033 Special Value Blue Tub Theme Basic Year 1998 Pieces 1,200 Availability Retired Buy this set at eBay Bricklink	Retail $19.99 Value $80.98 Growth +305.1% Annual growth 2.9% I own this set I want this set

	3759 Anniversary Tub Theme Basic Year 1998 Pieces 1,200 Availability Retired Buy this set at eBay Bricklink	Retail $19.99 Value $97.05 Growth +385.5% Annual growth 6.0% I own this set I want this set

	3025 Limited Edition Silver Brick Bucket Theme Basic Year 1998 Pieces 601 Availability Retired Buy this set at eBay Bricklink	Retail $9.99 Value $47.03 Growth +370.8% Annual growth 6.9% I own this set I want this set

	3758 Anniversary Bucket Theme Basic Year 1998 Pieces 600 Availability Retired Buy this set at Bricklink	Retail $9.99 Value $41.02 Growth +310.6% Annual growth 5.4% I own this set I want this set

	4226 Freestyle Bucket Theme Basic Year 1998 Pieces / Minifigs 508 / 2 Availability Retired Buy this set at Bricklink	Retail $12.99 Value $50.16 Growth +286.1% Annual growth 5.1% I own this set I want this set

	2449 Basic Building Set Theme Basic Year 1998 Pieces 466 Availability Retired Buy this set at eBay	Retail $14.99 Value $21.58 Growth +44.0% Annual growth 1.4% I own this set I want this set

	4220 Brick Pack 200 Theme Basic Year 1998 Pieces 428 Availability Retired Buy this set at Bricklink	Retail $14.99 Value $52.76 Growth +252.0% Annual growth 4.8% I own this set I want this set

	2494 Purple Bucket Set Theme Basic Year 1998 Pieces 400 Availability Retired Buy this set at eBay Bricklink	Retail $15.99 Value $50.00 Growth +212.7% Annual growth 4.7% I own this set I want this set

	4275 Basic Blue Bucket Theme Basic Year 1998 Pieces 400 Availability Retired Buy this set at Bricklink	Retail $12.99 Value $41.85 Growth +222.2% Annual growth 4.4% I own this set I want this set

	4224 My Home Bucket Theme Basic Year 1998 Pieces / Minifigs 359 / 2 Availability Retired Buy this set at Bricklink	Retail $9.99 Value $34.11 Growth +241.4% Annual growth 4.7% I own this set I want this set

	4222 Basic Box Theme Basic Year 1998 Pieces / Minifigs 355 / 2 Availability Retired Buy this set at eBay Bricklink	Retail $9.99 Value $40.00 Growth +300.4% Annual growth 5.5% I own this set I want this set

	4214 My Little Farm Theme Basic Year 1998 Pieces 243 Availability Retired Buy this set at Bricklink	Retail $7.99 Value $36.10 Growth +351.8% Annual growth 4.5% I own this set I want this set

	4225 Basic Building Set Theme Basic Year 1998 Pieces / Minifigs 243 / 1 Availability Retired Buy this set at ebay Bricklink	Retail $7.99 Value $33.62 Growth +320.8% Annual growth 6.2% I own this set I want this set

	3042 Basic Building Set Theme Basic Year 1998 Pieces 187 Availability Retired Buy this set at Bricklink	Retail $7.99 Value $33.14 Growth +314.8% Annual growth 5.4% I own this set I want this set

	3040 Challenger Set 200 Theme Basic Year 1998 Pieces / Minifigs 153 / 1 Availability Retired Buy this set at eBay	Retail $6.99 Value $25.55 Growth +265.5% Annual growth 10.4% I own this set I want this set

My Collection

I own this set

I want this set

Set Details

Set number

4221-1

Name

Basic Building Set

Theme

Basic

Year

1998

Availability

Retired

Pieces

66 (PPP $0.11)

Minifigs

1 (Value $5.78)

(Exclusive)

Set Pricing

Retail price

$6.99

New/Sealed

Value

$10.44

Growth

+49.36%

Annual growth

+2.09% Decreasing

Rolling growth

+2.89% (Previous 12 months)

90-day change

-1.98%

Used

Value

$4.46

Range

$4.37 - $5.35

Quick Buy

eBay

Buy

Price

$10.13

Bricklink

Buy

Lowest price

$10.22 (DK)

Highest price

$38.66

*Listings are for new/sealed sets.

Set Predictions

New/Sealed

Today's value

$10.44

1 year forecast

$10.66+2.09%

5 year forecast

$11.52+10.37%

$11

$12

4221 Basic Building Set is projected to be valued between $11 - $12 within five years.

Set Facts

This is the small box version.

Barcodes

EAN

5702010942213

Basic Building Set Reviews

28 ratings

4.5

Collectors

Investors

Theme Analysis

Basic

Sets

402

Years

1972 - 2003

Annual growth

+4.66% (this set +2.09%)

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

Community Stats

Basic Building Set currently ranks #85 out of the top most owned sets in Basic.

#1X-Large Baseplate Grey

#2Building Plate, Green

#3Universal Building Set

#4Brick Separator, Green

#5Basic Building Set

#85Basic Building Set

#86The Chopper

#87Quattro Leg

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)

$10.44

Value (in a year)

$10.66

Value (in 2 years)

$10.88

Accuracy

0.960500 Very high

Statistical Model

Value (today)

$11.48

Value (in a year)

(Possible plateau)

Value (in two years)

(Possible plateau)

Accuracy

0.230204 Very low

Used

Machine Learning/AI Model

Value (today)

$4.46

Value (low range)

$4.37

Value (high range)

$5.35

Accuracy

0.905500 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.

Explore

Sets Minifigs Deals

About Us

About BrickEconomy Contact Us Support Us by contributing to BrickEconomy

Support Us

Helpful Links

FAQs Widgets Sitemap

Follow BrickEconomy

LEGO, the LEGO logo, the Minifigure and the brick and knob configurations are trademarks and/or copyrights of the LEGO Group of companies which does not sponsor, authorize or endorse this site.
BrickEconomy, the BrickEconomy logo and all content not covered by The LEGO Group's copyright is, unless otherwise stated, ©2025 BrickEconomy.

Change Region

Changes the pricing currency and date formats to a specific region. Adjusts pricing and date formats to region.