Here is the Poly-count of every single prefab:

Prefab - Triangles - Vertex

Building _01_V1 - 408K - 694K

Building _01_V2 - 834K - 1.4M

Building _01_V3 - 1.4M - 2.4M

Building _02_V1 - 282K - 449K

Building _02_V2 - 784K - 1.3M

Building _02_V3 - 1.4M - 2.2M

Building _03_V1 - 1.5M - 2.4M

Building _03_V2 - 4.0M - 6.3M

Building _03_V3 - 6.7M - 10.4M

Building _04_V1 - 1.6M - 2.5M

Building _04_V2 - 2.3M - 3.6M

Building _04_V3 - 3.4M - 5.3M

Beech_01 - 24.1K - 28.4K

Beech_02 - 24.1K - 28.4K

Beech_03 - 27.2K - 32.8K

All the Diffuse and Normal Maps are in .png format. Here is the list of textures and their details:

Maps - Dimensions - Types

building_v1_day_diffuse - 2048x2048

building_v2_day_diffuse - 2048x2048

building_v3_day_diffuse - 2048x2048

building_v4_diffuse - 2048x2048

building_v5_day_diffuse - 2048x2048

building_v6_day_diffuse - 2048x2048

building_v7_day_diffuse - 2048x2048

Concrete_normal - 2048x1024

Concrtae_diffuse - 2048x1024

bark01 - 1024x1024

bark01_normal - 1024x1024

beech leaf - 1024x1024

beech leaf_Normal - 1024x1024