If you're interested in helping your neighborhood cats, here are some tips to keep in mind:

Build your feral cats homes that stay dry and accessible in any weather.If your area gets a lot of snow or rain, build the houses on stilts(like in the video) so the doors don't get buried by heavy snowfall andwater doesn't get in during summer rains.
Include two entrances in your cat houses. Cats need an easy escape route so that predators and bully cats can't easily trap them in their homes.
Make sure your cats' houses are accessible to you. Build your feral cat houses so you can easily get in and clean them every year, or to help an injured cat if you need to.
Make any repairs and change the straw before it gets cold. Few cats like change, so give your cats time to acclimate to the new smells before winter hits.
Give your cats access to fresh water -- a rare commodity in low temperatures. A heated water bowl ($20-30) allows for unfrozen water all winter long.

Feral cats often go unnoticed and uncared-for in neighborhoods and
industrial areas, allowing them to increase wildly in numbers, which can
lead to complaints and drastic actions. Practicing TNR and maintaining a
well-cared-for colony will keep the cats as happy and healthy as
possible. Ensuring they are not creating more cats will keep your
neighborhood happy too.

How to Build Feral-Cat Shelters

Preparing Feral Cat Houses for Winter

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