Map request/help?

I really don't know where this post should go, so I'll drop it here.

I need help in making a map for my new server, which this map will be based around an Assault gametype. (Time to read a little bit)

In a random city the Rebels and Combines are fighting for control. What either team must do is carry their flag to the top of the enemy's main outpost. How do you accomplish such a task? Well you must gain a foothold in the city by holding out in random buildings spread out in the city that happen to give your team a vantage point in the fight. As you clear the next building you move up, inching closer to victory against the opposition.

However, there is a level of detail I would like to have in this map that I just can't do. I lack the patience and experience with Hammer to do this. It would be a great help to my small and barely growing community to get a decent map custom made for the Omegatech Gaming servers that would help us stand out from the rest of the DM servers out there. If anyone is willing to help out that would be greatly appreciated.