Hey Noah!
Wowzers I'm super impressed by all that you're working on for your community. That's awesome!
I don't know specifically for facilities, but for grants, here's a few spots I know offer various animal welfare grants. You may have looked into these, but just in case: Petco Love Lost, Best Friends Animal Society, HASS (Human Animal Support Services), The Bissell Foundation, PetSmart Charities, ASPCA, HumanePro, Pedigree Foundation, NACA (National Animal Care & Control Association), Banfield Foundation, Lowe's Hometown Grants, & Walmart Charities.
Additionally, not sure if Texas has this, but we have grants through Florida through the sale pet-themed license plates, so we receive grants through them occasionally. Lastly, I recommend checking with your local tax collector office. Our county collector here, chooses a different municipality or nonprofit each quarter to include in their tax collection letter that's mailed to citizens. We received $9K through that alone just last quarter.
Best wishes as you continue to pursue improving your facility to take care of the pets in your community!
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Sarah Sukhram
Vol. & Foster Coordinator
Pasco County Animal Services
Land O' Lakes, FL
https://www.pascocountyfl.net/408/Animal-Services------------------------------