First off, this question could probably be worded better. Here's my situation:
I'm a web developer and am creating a template to sell on a popular online marketplace called themeforest.net. The demo of this template is going to mimick a golf course website and is mainly geared toward golf course owners looking to create a website for their course.
Here's an example of a similar template.
I have a ton of high res pictures over the years of golf courses and instead of buying some to use I figured I could just use the ones I've taken myself.
My question is that I'm not sure if I can use these pictures without the individual golf courses permission.
I found a similar question here although that particular one was more for taking pictures of people's homes.
The pictures would be included to use for free in the templates I sell.