This is a paid asset, but now you can download Resources Vol.1 – Construction for FREE, but please remember this package is provided only for learning purposes or to be able to test before buying the product, NOT FOR COMMERCIAL PURPOSES.
Detail this asset from Unity Store: Original Link
Resources Vol.1 – Construction v1.0
“If possible, please buy the package to support the developer”
Set of stylized construction game resources.
Contains 33 unique prefab assets.
Unique PBR Metal-Rough Textures for all objects
Texture resolution 512×512
Average polygon count per object is ~ 600