I should've been more explicit, I meant against bringing it in-house. My partner is an experienced commercial real estate lawyer so, really, I'm just reflecting her view - she's worked on both sides, in-house and private practice. The only reason, in her experience, that companies don't bring that sort of work in-house is insurance and the hassle of liability being worn by the law firm rather than the company. Also, it allows the client (i.e. manager at the client) to have someone to blame when it all goes tits up.