need ballpark price on carport conversion to garage

 

wants ballpark price on enclosing this 2-car garage: (background below)
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Background: He works in pest control & has a classic car that he wants to be able to comfortably shelter and tinker on. Regarding our main “intake questions,” there is no HOA there & he already called the city about permits and they said (“$400-$1200”), but has not filed a permit application yet. He probably will not start the conversion until 5-6 weeks from now when his tax refund should be arriving, then will pay cash.
For meeting you, he has a pretty open schedule on most weekday afternoons (at least until it warms up) or can meet on a Saturday.
location is near 107 ave & olive