Running into problem with artifacts in rendering

am running into some bad pixlization on flat porch roof and cant figure out how to fix it. have attached an image showing how the standard render looks.

Check for presence of duplicated object (move the object to see if there is another one underneath it) or double vertices (W / remove doubles for selected vertices)

Check your materials are correct

those were the first things I did to check, also materials are correct.

anyone know what settings I need to adjust?

Bump/normal map way too strong?

details on door are not normal map everything is polys

If you share your settings (screen grabs or blend file) maybe someone might have a better idea…