How many pieces are in the Build My City Accessory Set?

Build My City Accessory Set contains 100 pieces.

What age is the Build My City Accessory Set recommended for?

This set is recommended for ages 6+.

When was the Build My City Accessory Set released?

Build My City Accessory Set was released in 2017.

LEGO Build My City Accessory Set set 40170

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🏛 City

Set #40170

Build My City Accessory Set

The Build My City Accessory Set is a great way to add detail to any LEGO City layout.

Before you buy

Who it's for: Ages 6+ · Beginner build Ideal for kids and LEGO City fans looking to add small details to their layouts.
Build: 100 pieces · about 1 hours Build time is an estimate.
Price: $9.99 list price · 10.0¢ per piece
Availability: Retired at LEGO

★★★☆☆ 3.6 community rating from 116 ratings

Fans appreciate this set for its ability to enhance LEGO City layouts with small, detailed builds, though some feel the piece count is low for the price. It's generally well-received as a supplementary set rather than a standalone purchase.

$9.99

Check price on eBay

📝 Our Take

AI-assisted editorial summary, grounded in our LEGO database and public community discussions. How we use AI

The Build My City Accessory Set is a great way to add detail to any LEGO City layout. This set provides a variety of small builds that enhance the realism and playability of your LEGO world, making it feel more alive and bustling with activity.

This set is perfect for LEGO City enthusiasts and kids looking to expand their urban landscapes. The builds are straightforward and fun, offering a quick and satisfying addition to any existing LEGO City setup.

Skip this if you are looking for a complex or challenging build experience. This set is designed for simplicity and expanding existing layouts; consider larger LEGO City sets for more intricate building.

✨ New

Ask BlockTalk about this set

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BlockTalk

Hi! I'm BlockTalk, your LEGO expert. Ask me anything about the Build My City Accessory Set - building tips, investment potential, comparisons, or anything else!

Try asking:

How does this set compare to other LEGO City accessory packs in terms of piece variety? What are some creative ways to incorporate these accessories into a larger LEGO City display? Is this set a good value for adding detail to a LEGO City layout? How can I use these parts to build my own custom city accessories?

🧱 Building Experience

AI-assisted build estimate, grounded in our LEGO database and public community discussions. How we use AI

🧩

100

Pieces

⏱

Estimated Build Time

📊

Beginner

Difficulty

📏

15cm × 14cm × 6cm

Dimensions

Build Highlights:

Quick and easy builds suitable for younger builders.
Variety of small models to enhance playability.
Great for adding detail to existing LEGO City layouts.
Includes elements to create street furniture and greenery.

📈 Investment Analysis

AI-assisted investment analysis, grounded in our LEGO database and public community discussions. How we use AI

Not enough price history for a trend

C+

Investment Grade

⏳ Retired

The Build My City Accessory Set, while retired, is a relatively small set with a focus on enhancing play rather than collectibility. Its investment potential is moderate. The piece count is low, and while it adds value to a LEGO City layout, it's not a set that's likely to see significant price appreciation. Its value lies more in its utility for MOC builders and those looking to expand their LEGO City scenes. Demand will likely remain steady among LEGO City fans, but expect modest returns rather than substantial gains.

Not Financial Advice: Content is for educational purposes only. Past performance doesn't guarantee future results. Full disclaimer

⚖ Compare Similar Sets

Main Square

City • 1,517 pcs

$199.99

Gaming Tournament Truck

Compared to other LEGO City accessory sets, the Build My City Accessory Set offers a diverse range of small builds to enhance a city layout. While larger sets like the LEGO City Square (60271-1) provide more comprehensive city elements, this set is a cost-effective option for adding smaller details and enhancing existing builds. It's a good choice for those who want to add quick and easy details without investing in larger sets.

📦 Parts Inventory

Official piece count: 100
Parts cataloged in this inventory: 67 unique parts, 102 pieces

LEGO counts 100 pieces. This inventory comes from a separate parts catalog and lists 102; the two do not always count the same elements, so their totals differ. Spare parts are counted in neither figure.

Missing a piece? Check this set piece by piece, with look-alike colors flagged and element IDs for replacements.

Brick Curved 2 x ...

Part #: 11477 1× Light Bluish Gray

Road Sign Clip-on...

Part #: 15210 1× White

Brick Round 2 x 2...

Part #: 15395 1× White

Plate Special 1 x...

Part #: 15573 4× Light Bluish Gray

Steering Wheel Sm...

Part #: 16091 1× Light Bluish Gray

Brick Special 1 x...

Part #: 22885 1× Red

Tile Round 1 x 1 ...

Part #: 25269 4× Light Bluish Gray

Brick 1 x 2

Part #: 3004 1× Dark Tan

Brick 1 x 2

Part #: 3004 1× White

Brick 1 x 4

Part #: 3010 1× Dark Tan

Part #: 3020 2× Light Bluish Gray

Plate 2 x 3

Part #: 3021 1× Light Bluish Gray

Tool Jackhammer /...

Part #: 30228 1× Dark Bluish Gray

Plate 1 x 2

Part #: 3023 1× Blue

Road Sign Clip-on...

Part #: 30259 1× Light Bluish Gray

Road Sign Clip-on...

Part #: 30261 1× White

Plate 4 x 4

Part #: 3031 3× Light Bluish Gray

Plate 4 x 4

Part #: 3031 1× Black

Plate 4 x 4

Part #: 3031 1× Green

Brick Special 1 x...

Part #: 30414 1× White

Hinge Cylinder 1 ...

Part #: 30553 1× Light Bluish Gray

Brick Round 1 x 1...

Part #: 3062b 1× Trans-Light Blue

Brick Round 1 x 1...

Part #: 3062b 1× White

Tile 2 x 2 with G...

Part #: 3068b 1× White

Tile 2 x 2 with N...

Part #: 3068bpr0201 1× White

Tile 1 x 2 with G...

Part #: 3069b 1× Trans-Yellow

Tile 1 x 1 with G...

Part #: 3070b 1× Light Bluish Gray

Plant, Apple

Part #: 33051 1× Green

Plant, Banana

Part #: 33085 1× Yellow

Plant, Carrot

Part #: 33172 1× Orange

Animal, Frog

Part #: 33320 1× Green

Sticker Sheet for...

Part #: 34585 1× [No Color/Any Color]

Plate 1 x 3

Part #: 3623 2× Black

Plate 1 x 6

Part #: 3666 1× Blue

Plant, Flower Stem

Part #: 3741 1× Green

Plant, Flower - S...

Part #: 3742 3× Red

Equipment Brush /...

Part #: 3836 1× Reddish Brown

Equipment Shovel ...

Part #: 3837 1× Dark Bluish Gray

Equipment Cup / M...

Part #: 3899 1× Yellow

Bar 1 x 4 x 2 wit...

Part #: 4083 1× Yellow

Tile 1 x 8 with G...

Part #: 4162 1× White

Hinge Plate 1 x 2...

Part #: 44301b 1× Light Bluish Gray

Hinge Plate 1 x 2...

Part #: 44302a 1× Light Bluish Gray

Dish 2 x 2 Invert...

Part #: 4740 1× Trans-Dark Blue

Plate Special 1 x...

Part #: 48336 2× Blue

Panel 1 x 2 x 1 [...

Part #: 4865b 2× Tan

Plate Special 1 x...

Part #: 49668 1× Black

Plate Special 1 x...

Part #: 60470b 1× Light Bluish Gray

Window 1 x 2 x 2 ...

Part #: 60592 1× Red

Window 1 x 4 x 3 ...

Part #: 60594 1× Dark Bluish Gray

Wave / Flame Roun...

Part #: 6126a 1× Trans-Light Blue

Plate Round 1 x 1...

Part #: 6141 1× Trans-Orange

Plate Round 1 x 1...

Part #: 6141 1× Trans-Green

Plate Round 1 x 1...

Part #: 6141 1× Trans-Yellow

Plate Round 1 x 1...

Part #: 6141 2× Blue

Plate Round 1 x 1...

Part #: 6141 1× Trans-Red

Container Box 2 x...

Part #: 61780 1× Green

Bar 1 x 4 x 3 [En...

Part #: 62113 1× Dark Bluish Gray

Panel 1 x 1 x 1 C...

Part #: 6231 4× Tan

Plant, 1 x 1 x 2/...

Part #: 6255 1× Bright Green

Bar 6L with Stop ...

Part #: 63965 1× Reddish Brown

Bicycle Frame, Re...

Part #: 65574 1× Medium Azure

Hinge Plate 1 x 4...

Part #: 73983 1× Blue

Plate Round 1 x 1...

Part #: 85861 1× Black

Brick Special 1 x...

Part #: 87087 3× Black

Panel 1 x 2 x 3 [...

Part #: 87544 1× Trans-Brown

Plate Special 2 x...

Part #: 87580 2× Green

Hinge Plate 2 x 2...

Part #: 92582 1× Light Bluish Gray

Wheel Bicycle, Fi...

Part #: 92851 2× Trans-Clear

Brick Curved 4 x ...

Part #: 93273 1× White

Equipment Bottle

Part #: 95228 1× Trans-Clear

Tile Round 1 x 1

Part #: 98138 1× Trans-Clear

Tile Round 1 x 1

Part #: 98138 1× Light Bluish Gray

Tile Special 2 x ...

Part #: 98549 2× Light Bluish Gray

Bar 1 x 12 with 1...

Part #: 99784 1× Light Bluish Gray

The set includes a variety of small parts in useful colors like Light Bluish Gray and Tan, making it a good source for adding details to city-themed MOCs. The inclusion of jumper plates and corner panels adds versatility for creating intricate designs.

🛒 Where to Buy

eBay

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💎 Notable Parts

Light Bluish Gray Plate Special 1 x 2 with 1 Stud with Groove and Inside Stud Holder (Jumper) (4x) $0.60

Tan Panel 1 x 1 x 1 Corner (4x) $0.80

Light Bluish Gray Tile Round 1 x 1 Quarter (4x) $0.40

Black Brick Special 1 x 1 with Stud on 1 Side (3x) $0.45

Est. BrickLink Part Value

$2.25

💡 MOC Potential

🏙 Create custom street furniture like benches, bus stops, and newspaper stands.

🌳 Expand park areas with more trees, flower beds, and small landscaping features.

🚗 Design small service vehicles like bicycles, scooters, or maintenance carts.

Community Insights

Real opinions from Reddit and YouTube

What Reddit Says

No Reddit discussions found for this set.

What YouTubers Say

1 video found

BlockTalk AI

The 4K speed build by Audio Library showcases the LEGO City 40170 accessory set's various buildable items, such as the streetlight, stoplight, and fountain, designed to enhance city layouts. The reviewer highlights the set's ability to improve and enhance the overall play experience by adding a variety of city details.