Interview local residential architects to see their abilities, fee structure, availability, and if you feel they will be easy to work with. The porch addition needs to be sensitively designed so it enhances the existing architecture and area.

What Mark said, and also I'd do something about the concrete retaining wall.

Here are two options to go with porch with bay window from the left and no bay window from the right side.

Just keep in mind that a porch will make the interior much, much darker.

Instead of a porch a covered stoop with built in benched would look darling. Similar to this brick entry.

I think some wide steps oriented towards the front path and some foundation planting would go a long way towards making your house special. What's the storm door? Often, people put cheap, aluminum storm doors over attractive wood doors. Maybe painting or changing the storm door is all you need.

Might also consider painting the white areas above the bay windows to match the siding. My eye goes there when they're white, and you want it to go to the entry.

One of the first things the architect you hire will do is check the local zoning and other restrictions.

Mark is right, of course. Setback requirements could prohibit building anything forward from the existing house.

You don't need to pay to find out setbacks for a porch at your location. Call the Building Department and ask. Regs are online for your city, also.

"You don't need to pay to find out setbacks for a porch at your location. "

Dan is right, but no one thought of checking; hence you may be better off engaging a professional that will think of such things and protect you from advice that is not as thick as two short planks.