LEGO 631 Doors and Windows is a vintage Basic set from 1996 valued at $19 for new and sealed sets, up 148% from an original retail price of $7.49. Annual appreciation has averaged 3.32% since release. Used copies are valued between $3 and $12 depending on condition.

Set Value (New/Sealed)

This chart represents the current new/sealed value of the set Doors and Windows since February 2017. High accuracy
LEGO 631-1 Doors and Windows is a Basic Supplementaries set released in 1996, containing 52 pieces. The assortment focuses on building elements for openings, including red 1 x 4 x 5 doors with panes, red 1 x 4 x 3 and 1 x 2 x 2 windows with fixed trans-clear glass, green 1 x 2 x 3 shutters, and white window panes. Designed as a parts pack, it expands System builds with a variety of door and window sizes for custom houses and structures.

A new and sealed Doors and Windows is currently valued at around $19, with annual growth of approximately 3%. The average used price is $8 for those in good overall condition. Based on current trends, this set could be valued near $19 within the next year.
Doors and Windows has become a rare set, as set 631-1 has not been seen for sale in new/good condition online or in retail for over one year. Its actual value is likely above the current estimate. The last brand new Doors and Windows was sold on eBay.
There are currently no new/sealed listings available for Doors and Windows at this time.
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Sets in Basic / Supplementaries

638 Lots of Extra Basic Bricks

Theme / Subtheme Basic / Supplementaries
Year 1996
Pieces 404
Availability Retired
638 LEGO Lots of Extra Basic Bricks
Retail $19.99
Value $48.86
Growth  +144.4%
Annual growth 3.0%

639 Lots of Extra Basic Bricks

Theme / Subtheme Basic / Supplementaries
Year 1996
Pieces 400
Availability Retired
639 LEGO Lots of Extra Basic Bricks
Retail $19.75
Value $34.63
Growth  +75.3%
Annual growth 1.9%

634 Extra Bricks in Red

Theme / Subtheme Basic / Supplementaries
Year 1996
Pieces 62
Availability Retired
634 LEGO Extra Bricks in Red
Retail $7.49
Value $14.31
Growth  +91.1%
Annual growth 2.2%

635 Extra Bricks in White

Theme / Subtheme Basic / Supplementaries
Year 1996
Pieces 62
Availability Retired
635 LEGO Extra Bricks in White
Retail $7.49
Value $13.96
Growth  +86.4%
Annual growth 1.4%

632 Wheels and Tyres

Theme / Subtheme Basic / Supplementaries
Year 1996
Pieces 60
Availability Retired
632 LEGO Wheels and Tyres
Retail $7.49
Value $15.15
Growth  +102.3%
Annual growth 2.4%

633 Roof Tiles

Theme / Subtheme Basic / Supplementaries
Year 1996
Pieces 50
Availability Retired
633 LEGO Roof Tiles
Retail $7.49
Value $14.70
Growth  +96.3%
Annual growth 2.3%

624 Basic Motor, 9V

Theme / Subtheme Basic / Supplementaries
Year 1996
Pieces 27
Availability Retired
624 LEGO Basic Motor, 9V
Retail $25.99
Value $37.26
Growth  +43.4%
Annual growth 1.5%

636 Pull Back Motor

Theme / Subtheme Basic / Supplementaries
Year 1996
Pieces 14
Availability Retired
636 LEGO Pull Back Motor
Retail $6.49
Value $7.66
Growth  +18.0%
Annual growth 3.3%

629 Three Building Plates

Theme / Subtheme Basic / Supplementaries
Year 1996
Pieces 3
Availability Retired
629 LEGO Three Building Plates
Retail $5.49
Value $13.02
Growth  +137.2%
Annual growth 2.1%

637 Play Table

Theme / Subtheme Basic / Supplementaries
Year 1996
Pieces 3
Availability Retired
637 LEGO Play Table
Retail $44.99
Value $295.51
Growth  +556.8%
Annual growth 6.5%

626 Building Plate, Green

Theme / Subtheme Basic / Supplementaries
Year 1996
Pieces 1
Availability Retired
626 LEGO Building Plate, Green
Retail $4.99
Value $9.34
Growth  +87.2%
Annual growth 2.6%

627 Blue Building Plate

Theme / Subtheme Basic / Supplementaries
Year 1996
Pieces 1
Availability Retired
627 LEGO Blue Building Plate
Retail $5.49
Value $11.74
Growth  +113.8%
Annual growth 3.1%

628 X-Large Baseplate Grey

Theme / Subtheme Basic / Supplementaries
Year 1996
Pieces 1
Availability Retired
628 LEGO X-Large Baseplate Grey
Retail $14.99
Value $23.58
Growth  +57.3%
Annual growth 5.9%

630 Brick Separator, Green

Theme / Subtheme Basic / Supplementaries
Year 1996
Pieces 1
Availability Retired
630 LEGO Brick Separator, Green
Retail $2.49
Value $3.67
Growth  +47.4%
Annual growth 1.3%