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

Sets
Basic
Supplementaries
Baseplate, Grey

815 LEGO Baseplate, Grey

Name: LEGO Baseplate, Grey
Brand: LEGO
SKU: 815-1
Availability: InStock
Rating: 4.5 (27 reviews)

Images 1

LEGO 815 Baseplate, Grey is a vintage Basic set from 1986 valued at $21 for new and sealed sets, up 179% from an original retail price of $7.49. Annual appreciation has averaged 2.02% since release. On the used market, values range from $16 to $27 based on condition.

Set Value (New/Sealed)

This chart represents the current new/sealed value of the set Baseplate, Grey since August 2018. Very high accuracy

LEGO 815-1 Baseplate, Grey is a Basic Supplementaries set released in 1986, containing 1 piece. The set includes a light gray 48 x 48 stud baseplate, measuring approximately 38.4 cm (15 in) on each side. It provides a large building surface for constructing and expanding layouts and is compatible with standard LEGO System bricks and plates.

A new and sealed Baseplate, Grey is currently valued at around $21, with annual growth of 2.0% that is expected to level off to around 1.3% in the coming year. The average used price is $17 for those in good overall condition. Based on current trends, this set could be valued near $21 within the next year. New and sealed listings currently range from $17 to $25.

All regions

All regions 7
United States 5
Germany 1

For Sale (New/Sealed)

	(US) Large Gray Baseplate 15x15 Inches #815 New Sealed	BrickEconomy Choice $15.25
	(JP) Good Condition from old days but, has rip on back side.	$16.99 -18.6%
	(US) Still sealed up since the 1980's.A couple of small tears on the backside of the plast...	$19.80 -5.1%
	(DE) --- differenzbesteuert nach 25a UStG --- price sticker on front of film	$20.99 +0.6%
	(US) Large Baseplate 815 NEW 14"x14"	$25.00 +19.8%
	(US) This set is Brand New and Sealed. We are the original owner and bought it new off the...	$25.00 +19.8%
	(US) BrickLink store Plastic Pushers	$29.99 +43.8%

Related Sets


	843 Baseplate, Grey Theme / Subtheme Basic / Supplementaries Year 1980 Pieces 1 Availability Retired Buy this set at eBay Bricklink	Retail $3.75 Value $16.57 Growth +341.9% Annual growth 2.4% I own this set I want this set

Sets in Basic / Supplementaries


	800-2 Extra Bricks Red Theme / Subtheme Basic / Supplementaries Year 1986 Pieces 120 Availability Retired Buy this set at Bricklink	Retail $4.75 Value $19.88 Growth +318.5% Annual growth 2.9% I own this set I want this set

	812 Red Roof Bricks, Shallow Pitch Theme / Subtheme Basic / Supplementaries Year 1986 Pieces 101 Availability Retired Buy this set at eBay Bricklink	Retail $4.75 Value $38.80 Growth +716.8% Annual growth 5.0% I own this set I want this set

	801-2 Extra Bricks Blue Theme / Subtheme Basic / Supplementaries Year 1986 Pieces 82 Availability Retired Buy this set at Bricklink	Retail $4.75 Value $28.70 Growth +504.2% Annual growth 4.4% I own this set I want this set

	803 Extra Bricks Yellow Theme / Subtheme Basic / Supplementaries Year 1986 Pieces 62 Availability Retired Buy this set at Bricklink	Retail $4.75 Value $19.08 Growth +301.7% Annual growth 3.2% I own this set I want this set

	804 Extra Bricks Black Theme / Subtheme Basic / Supplementaries Year 1986 Pieces 62 Availability Retired Buy this set at Bricklink	Retail $4.75 Value $21.18 Growth +345.9% Annual growth 3.8% I own this set I want this set

	805 Extra Bricks Grey Theme / Subtheme Basic / Supplementaries Year 1986 Pieces 62 Availability Retired Buy this set at Bricklink	Retail $4.75 Value $5.01 Growth +5.5% I own this set I want this set

	811 Red Roof Bricks, Steep Pitch Theme / Subtheme Basic / Supplementaries Year 1986 Pieces 59 Availability Retired Buy this set at Bricklink	Retail $4.75 Value $20.48 Growth +331.2% Annual growth 4.9% I own this set I want this set

	806 Extra Plates Blue Theme / Subtheme Basic / Supplementaries Year 1986 Pieces 42 Availability Retired Buy this set at Bricklink	Retail $4.75 Value $24.77 Growth +421.5% Annual growth 2.6% I own this set I want this set

	807 Extra Plates Red Theme / Subtheme Basic / Supplementaries Year 1986 Pieces 42 Availability Retired Buy this set at Bricklink	Retail $4.75 Value $26.25 Growth +452.6% Annual growth 2.4% I own this set I want this set

	808 Wheels and Tyres Theme / Subtheme Basic / Supplementaries Year 1986 Pieces 40 Availability Retired Buy this set at eBay	Retail $4.75 Value $15.18 Growth +219.6% Annual growth 2.9% I own this set I want this set

	809 Doors and Windows Theme / Subtheme Basic / Supplementaries Year 1986 Pieces 38 Availability Retired Buy this set at eBay	Retail $4.75 Value $24.87 Growth +423.6% Annual growth 4.2% I own this set I want this set

	802-2 Extra Bricks White Theme / Subtheme Basic / Supplementaries Year 1986 Pieces 30 Availability Retired Buy this set at Bricklink	Retail $4.75 Value $17.12 Growth +260.4% Annual growth 1.9% I own this set I want this set

	816 Lighting Bricks, 4.5V Theme / Subtheme Basic / Supplementaries Year 1986 Pieces 18 Availability Retired Buy this set at eBay	Retail $9.49 Value $73.13 Growth +670.6% Annual growth 6.2% I own this set I want this set

	814 Baseplates, Green, Red and Yellow Theme / Subtheme Basic / Supplementaries Year 1986 Pieces 3 Availability Retired Buy this set at eBay Bricklink	Retail $3.90 Value $19.08 Growth +389.2% Annual growth 2.7% I own this set I want this set

	813 Baseplate, Green Theme / Subtheme Basic / Supplementaries Year 1986 Pieces 1 Availability Retired Buy this set at eBay	Retail $4.49 Value $12.72 Growth +183.3% Annual growth 4.5% I own this set I want this set

My Collection

I own this set

I want this set

Set Details

Set number

815-1

Name

Baseplate, Grey

Theme

Basic

Subtheme

Supplementaries

Year

1986

Availability

Retired

Pieces

1 (PPP $7.49)

Set Pricing

Retail price

$7.49

New/Sealed

Value

$20.86

Growth

+178.50%

Annual growth

+2.02% Decreasing

Rolling growth

+5.36% (Previous 12 months)

Future growth

+1.31% (2-3 year outlook)

90-day change

5.15%

Used

Value

$17.31

Range

$16.02 - $27.07

Quick Buy

eBay

Buy

Lowest price

$15.25

Highest price

$25.00

Bricklink

Buy

Lowest price

$16.99 (JP)

Highest price

$29.99

*Listings are for new/sealed sets.

Set Predictions

New/Sealed

Today's value

$20.86

1 year forecast

$21.01+0.72%

5 year forecast

$22.16+6.23%

$22

$23

815 Baseplate, Grey is projected to be valued between $22 - $23 within five years.

Insights

Released long ago and now retired, Baseplate, Grey (815) is a classic Basic Supplementaries accessory whose vintage status gives sealed examples some upside, and substitution from ongoing baseplate releases tempers demand and keeps it a cautious, utility-focused hold rather than a standout investment.

Set Facts

The set contains a single 15x15 inch / 48x48 studs gray baseplate.

Regional Retail Prices

United States

$7.49

United Kingdom

£5.50

Baseplate, Grey Reviews

27 ratings

4.5

Collectors

Investors

Subtheme Analysis

Basic / Supplementaries

Sets

Years

1973 - 1996

Annual growth

+3.03% (this set +2.02%)

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

Community Stats

Baseplate, Grey currently ranks #15 out of the top most owned sets in Basic Supplementaries.

#1Building Plate, Green

#2X-Large Baseplate Grey

#3Brick Separator, Green

#4Lighting Bricks

#5Wind-Up Motor

#15Baseplate, Grey

#16Lighting Set, 9V

#17Red Pull-Back Motor

About Basic Supplementaries

LEGO Supplementaries were sets released during the early days of the LEGO system. These sets were designed to supplement and expand upon the building possibilities of existing LEGO sets. Instead of being complete stand-alone models or kits, Supplementaries provided additional bricks, special parts, wheels, windows, doors, gears, or even motors. These sets were especially useful during an era when LEGO's product line was simpler and less specialized than it is today.

Supplementaries consists of 75 sets that ran from 1973 to 1996. As of today, 637 Play Table is the most valuable Supplementaries set with an estimated new/factory sealed value of $297.

Set Pricing Models

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

New/Sealed

Machine Learning/AI Model

Value (today)

$20.86

Value (in a year)

$21.28

Value (in 2 years)

$21.70

Accuracy

0.960500 Very high

Statistical Model

Value (today)

$27.68

Value (in a year)

(Possible plateau)

Value (in two years)

(Possible plateau)

Accuracy

0.215216 Very low

Used

Machine Learning/AI Model

Value (today)

$17.31

Value (low range)

$16.02

Value (high range)

$27.07

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.

Region · United States (USD)

Theme · Light

Explore

Sets Minifigs Deals

About Us

About BrickEconomy Contact Us Support Us

Helpful Links

FAQs Widgets Sitemap

Follow BrickEconomy

Facebook

Twitter/X

Instagram

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, ©2026 BrickEconomy.

Change Region

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