Just thought it might be helpful to share this info as it’s a general rule of thumb I use when working out costs on development sites my company buy to see if the figures add up on purchase price, construction cost, potential profit
Lower spec £125 + vat per sq foot
Mid spec £150 +
Top spec £175 +
This is generally for the core construction and it does fluctuate a bit where it is not typical construction. For example trench foundations are considered typical but if you need to do piling it is more expensive or if your concrete floor slab needs to be constructed as a raft with steel reinforcement.
The above prices don’t include specialist fitout ie bathrooms kitchens etc as they are very much driven by the client. I’ve had clients spend 10k on a kitchen and another spend 100k. Also things like underfloor heating might effect the price slightly depending on what system you use and if you want it to be fully compatible with a smart system that runs everything from one device. I use Nu-Heat regularly for underfloor heating as they are fully clued up on smart technology and do a range of systems to suit many situations.
I agree with Neil above regarding Control 4. I put it into our house and it is very user friendly and runs everything - Lighting, PIRs for lights, cctv, alarm, WiFi access points, underfloor heating, upstairs radiators, Sonos zones, all the AV surround sound sky etc. Everything runs back to our plant room.
Here is an example of the screens dotted around our house. They can also be used to video call each other so your wife can tell you to leave the pins alone and come for dinner instead of shouting room to room!
It’s also great being able to program buttons to do a list of tasks. my son in the morning can press a button on way into kitchen and it turns tv on changes channel to CBeebies etc. Or going into my tv room I have a button for football that puts on tv, sky sp 1 and sets the lighting and surround sound to suit. The movie night button therefore sets it up for that etc
Finally also worth remembering
that the lowest quote isn’t necessarily the best. I would always go with an established company who have all the insurances including Contractors All Risk as opposed to a smaller one man band type operation. They may be cheaper but it can be a struggle getting them back to resolve any issues if it is costing them money and they already had a tight price during the works.
Feel free to pm me if I can be of any help
Jon