You will need to rip out the old and do anew roof in the right size and slope and that will require a contractoer who does roofing too The slope as it continued will be too low when out to the edge of thepatio. if you keep the same slope for runoff . For me I would not bother unless the uncovered patio is to hot or windy for enjoyment .

You would lose the dormer as the roof tie-in will be almost halfway up the roof to maintain a decent ceiling height.

Keep in mind that when you add a porch roof you automatically darken the adjoining rooms.

This looks like a good spot for a pergola, or a free-standing flat-roof with motorized slats.

The new slab will be 12 feet deep and 35 ft wide (where the tarp is laying on the ground). We definately want ceiling fans and electrical tied in and I'm afraid that with the slope needed, the fans will be hanging at around 7.5 ft off the new slab. The current porch ceiling is right around 9, but after you come out past the over hang by the soffit, it jumps down to 8.5 ft tall.

The half moon window above the porch is not a dormer, its a window to our living room with a 20ft cathedral ceiling with the french doors below. Our kitchen is where the bay windows are on the left.

What about those skylift pergolas? Anyone have one of those? I really want a true built on structure and nothing that's going to require a bunch of maintenance later on, like replacing wood or restaining over time. 🤔

It is still a dormer, just not a truly functional dormer.

" I really want a true built on structure and nothing that's going to require a bunch of maintenance later on, like replacing wood or restaining over time. "

Bite the bullet and rebuild the roof then with the structure built properly.

What about having a gable roof instead of just flat hip roof. I know it's more expensive but it would look better and give more ceiling height for fans. 8ft flat ceiling seems way to low for a fan now having 9-20 ft ceilings in this house. My husband is 6'2" and if he raised his arms the fans might cut his fingers off. Lol!!! ***Adding drawing and new pics for gable reference. ***

Something similar...but obviously would be tied in on both sides to the current U-shaped/hip roof line. We have crows feet beams in our cathedral living room, so this might be a nice option to tie the two together.

What part of the country are you in, and what direction does the porch face?

I think a gable would look odd, with the gables on each side, and the drainage would be intense (I notice you don't have gutters).

Give careful consideration to Norwood Architects' comment about light. If you eliminate the dormer window, and drastically reduce the natural light coming in the living room and kitchen windows, you could have some dreary spaces inside. Is the ceiling fan on the porch (where you could potentially get a breeze) more important that natural light all year long?