Ask HN: Finding contracts for web development agency?

Hi,

I work as a contractor and I typically find work by searching job boards or speaking to recruiters. This has worked great for personal contracts, but I'd like to start taking on some larger projects and possibly bring in a team of devs.

Only problem is that I'm not sure where to find these types of projects. If I search for "web development agency" I see a number of local agencies working with some well known local and national clients, but how do they generally obtain these clients?

Aside from the obvious like having a website how do digital agencies typically find new projects?

If anyone has any experience obtaining clients I'd really appreciate knowing how you do it.

Thanks!