I'll offer that some of the 'value' may be determined by the intended use of the house. My primary home is located in the mountains of western NC, a popular spot for 2nd homes. Folks that buy a second home may be more interested in the HA angle beause they want to manage and/or keep tabs on the home while they are away, which is most of the time. This is certainly the case of 2nd home buyers where I live.
I'll also agree with the other posters, certain elements will probably add value. I could see structured wiring as a big plus - plain old Cat 5e is a nice backbone that will provide years of compatability. Sure Cat 6 is 'better', however no local ISP providers offer service with the speed to use the Cat 6 potential. A security system is a nice to have add-on, provided it is not too exoctic - mine is a fairly standard GE Caddx system that pretty much any local alarm company could service. The HA switches, controller, etc, could and likely would be a detractor to all but the most tech savy people. Mind you, mine is not complicated; however, the local alarm folks probably won't be as game to dive into a HA panel as the they would be with the GE Caddx. The IP cameras and the Davis Weather station would be neutral to positive. All of that said, I'll be lucky to break even on the price of all the 'plus' components and I'll likely loose money on the 'neutral' and 'negative' components.
There may well come a time when the industry gets more standardized and HA could help sell a house. Certain technologies, once accepted as a standard, mean that most servicers of equipment could indeed provide a service for said equipment. However, considering most electricians are still frightful of anything but a mechanical one-way, two-way or three-way switch, we are potentially a decade or more away from that point. In addition, realtors will have to become much more familiar with the technology and get comfortable with recommending it. Considering that some can't even come to grips with the ins and outs of a local school system, we might be miles away there as well.
I'll also agree with the other posters, certain elements will probably add value. I could see structured wiring as a big plus - plain old Cat 5e is a nice backbone that will provide years of compatability. Sure Cat 6 is 'better', however no local ISP providers offer service with the speed to use the Cat 6 potential. A security system is a nice to have add-on, provided it is not too exoctic - mine is a fairly standard GE Caddx system that pretty much any local alarm company could service. The HA switches, controller, etc, could and likely would be a detractor to all but the most tech savy people. Mind you, mine is not complicated; however, the local alarm folks probably won't be as game to dive into a HA panel as the they would be with the GE Caddx. The IP cameras and the Davis Weather station would be neutral to positive. All of that said, I'll be lucky to break even on the price of all the 'plus' components and I'll likely loose money on the 'neutral' and 'negative' components.
There may well come a time when the industry gets more standardized and HA could help sell a house. Certain technologies, once accepted as a standard, mean that most servicers of equipment could indeed provide a service for said equipment. However, considering most electricians are still frightful of anything but a mechanical one-way, two-way or three-way switch, we are potentially a decade or more away from that point. In addition, realtors will have to become much more familiar with the technology and get comfortable with recommending it. Considering that some can't even come to grips with the ins and outs of a local school system, we might be miles away there as well.