1) Please allocate some free/spare to walk from your office to the parking lot which is located five blocks away.
2) I usually buy more parking time than I would need.
3) I usually buy 15 minutes of extra/spare parking time, just in case if I won't be able to get there on time.
* Are the sentences written correctly? Hope somebody will help me. Thanks
I'm not a teacher of English, but I have spoken it for (almost) all of my life....
Thanks for replying and rephrasing the sentences for me.