Indeed, escrow is highly regulated in some states, including CA. There are a few third party services that provide an API for escrow among other things: http:/

Indeed, escrow is highly regulated in some states, including CA. There are a few third party services that provide an API for escrow among other things: http://www.armorpayments.com/ http://www.armorpayments.com/ and http://promisepay.com/ http://promisepay.com/. Stripe and Braintree can also support some versions of escrow, depending on how long you want to hold the money for and the amount.