This mod contains no esp and is just textures and meshes that have been optimized with COA to work with SSE.
All credit goes to the original creators of the Mod, Percevan/elinen.  All I have done is port it to SSE, so please if you want to endorse this mod,  endorse it here and thank them for the valuable resourses.  Without mods like this, Skyrim would be so much less.

The LE version of Whiterun house foundations


I have copied thier words from the LE pages

The Whiterun houses can be hard to build with as they lack proper foundations. Percevan made these new foundation models for Hoddminir so
we build in a more varied terrain, and we like to share these with you.
There is a new models that match each of the Whiterun houses that lack
foundations.

This modders resource contains:
* Foundations for the 16 Whiterun houses that lack foundations in the original models.
* There are two types of stoop with steps, a long and a short, that can be added under the house steps if needed.

Textures:
The foundations use original Skyrim textures, with the exception of the ground on the stoop models, here Blakflag/HyperactivChilds grass_dirt02 texture is used.

Install
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Un-zip files
Copy textures dds files to the SkyrimDataTexturelandscape
Copy nif files to the SkyrimDataMeshesarchitecturewhiterunfoundations


Other mods by sattyre:

Unofficial Skyrim Modder's Patch - USMP SE

Unofficial Skyrim Modders Patch - USMP Patch Emporium
sattyre's patch and esp replacer collection
Various Mystic Condensor Patches
Tharash Dol - Orc Stronghold and Player Home
Paarthurnax Choices plus3
Hi-Resgar - High Hrothgar in HD
RDO - Infinite Gold for Merchants Patch
Merging NPC Overhauls made easy.
A Novice Guide to Modding
TM Thalmor Overhaul SSE
Another Whiterun Patch SE
College Students SE
Whiterun house foundations