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Sets
LEGOLAND
Road Construction Set

780 LEGOLAND Road Construction Set

Name: LEGOLAND Road Construction Set
Brand: LEGO
SKU: 780-1
Availability: InStock
Rating: 4.70 (27 reviews)

Images 3

LEGO 780 Road Construction Set is a vintage LEGOLAND set from 1976 valued at $320 for new and sealed sets, up 2366% from an original retail price of $12.99. Annual appreciation has averaged 6.63% since release. On the used market, values range from $35 to $62 based on condition.

Set Value (New/Sealed)

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

LEGO 780-1 Road Construction Set is a LEGOLAND set released in 1976, containing 164 pieces. The set is the United States version of set 387 Excavator and Dumper, which was released in Europe, the United Kingdom, Australia, and Canada. Its model focuses on roadwork vehicles, with builds corresponding to an excavator and a dumper truck. As a U.S.-numbered variant from the vintage LEGOLAND range, it reflects LEGO’s regional set numbering used during the 1970s.

A new and sealed Road Construction Set is currently valued at around $320, with annual growth of approximately 7%. The average used price is $51 for those in good overall condition. Based on current trends, this set could be valued near $340 within the next year.

All regions

All regions 2
United States 2

For Sale (New/Sealed)

	(US) eBay listing for Road Construction Set	$310.76 -3.0%
	(US) New Sealed Perfect with orig shrink wrap	$323.00 +0.8%

All regions

All regions 6
United States 6

For Sale (Used)

	(US) Used - 780 Road Construction Set Yellow Red with Instructions Book Complete	$34.00 --33.9%
	(US) Used - Vintage 1975 LEGO #780 Road Construction Set NOT COMPLETE	$34.99 --32.0%
	(US) Used - #780 - Vintage Road Construction Set - 1975 Not Complete With Box	$39.95 --22.4%
	(US) Used - Vintage Lego 780 Road Construction Set, 99% Complete w/ Box and Instructions	$53.99
	(US) Used - 780 Road Construction Set Legoland 100% Complete	$59.99
	(US) Used - Vintage Lego Construction Set 780 With Manual	$60.00

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My Collection

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I want this set

Set Details

Set number

780-1

Name

Road Construction Set

Theme

LEGOLAND

Year

1976

Availability

Retired

Pieces

164 (PPP $0.08)

Set Pricing

Retail price

$12.99

New/Sealed

Value

$320.37

Growth

+2366.28%

Annual growth

+6.63% Decreasing

Rolling growth

+4.71% (Previous 12 months)

90-day change

6.50%

Used

Value

$51.46

Range

$34.59 - $61.75

Quick Buy

eBay

Buy

Price (new)

$310.76

Price (used)

$34.00

Bricklink

Buy

Lowest price

$323.00

*Listings are for new/sealed sets.

Set Predictions

New/Sealed

Today's value

$320.37

1 year forecast

$339.90+6.10%

5 year forecast

$401.32+25.27%

$390

$412

780 Road Construction Set is projected to be valued between $390 - $412 within five years.

Insights

Released as a US-numbered LEGOLAND variant tied to set 387, Road Construction Set is a vintage pre-minifigure release whose nostalgia and regional scarcity have kept sealed examples rare, and it attracts steady interest from town collectors while trading with thinner liquidity and strong condition sensitivity.

Set Facts

This set was only released in the United States but is the same as set 387 Excavator and Dumper which was released in Europe, the United Kingdom, Australia, and Canada.

Road Construction Set Reviews

27 ratings

4.7

Collectors

Investors

Theme Analysis

LEGOLAND

Sets

166

Years

1969 - 1978

Annual growth

+5.87% (this set +6.63%)

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

Community Stats

Road Construction Set currently ranks #121 out of the top most owned sets in LEGOLAND.

#121Road Construction Set

#122Double Excavator

#123Mobile Site Office

About LEGOLAND

The LEGO LEGOLAND theme, introduced in the 1970s and continuing into the 1980s, comprised sets that replicated everyday scenes, vehicles, and buildings in a more simplistic style than later themes. These sets, pre-dating the minifigure era, were designed to represent various aspects of life, from towns to vehicles to castles. The LEGOLAND theme was foundational in the evolution of LEGO, bridging the gap between basic brick building and the more themed, narrative-driven sets that would become standard in subsequent years.

Set Pricing Models

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

New/Sealed

Machine Learning/AI Model

Value (today)

$320.37

Value (in a year)

$339.90

Value (in 2 years)

$357.35

Accuracy

0.920300 High

Statistical Model

Value (today)

$299.50

Value (in a year)

(Possible plateau)

Value (in two years)

(Possible plateau)

Accuracy

0.202177 Very low

Used

Machine Learning/AI Model

Value (today)

$51.46

Value (low range)

$34.59

Value (high range)

$61.75

Accuracy

0.865300 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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