Systems configured to enable isolated client device interaction with building automation and control (BAC) networks, including third-party application access framework

A method configured to enable a third-party app to access data available via a building automation and control network, the method including:

• maintaining a BAC (Building Automation and Control) database of data values presented by each of a plurality of physical devices on a BAC network, wherein the database is isolated from the BAC network such that a user accessing the database does not gain direct access to any physical devices on the BAC network;
• providing an API request handling module which is configured to receive, via an API, requests from a plurality of third-party software platforms, wherein the API request handling module is configured to, in respect of each request:
• (i) determine whether or not the request is to be permitted based on operation of a permissions rules module, wherein the permissions rules module defines access requirements for data in the BAC database;
• and
• (ii) in the case that the request is to be permitted, perform a data access operation in respect of the BAC database thereby to enable fulfilment the request,
• thereby to enable selectively controlled access to the data values presented by each of the plurality of physical devices on the BAC network to a plurality of third-party applications, in an environment that is isolated from the BAC network.