advice on new build property

Doozergirl

Don't forget that your usage drops massively
once the heating goes off in spring/summer, evening out your payments over the year.  If you start a new contract in winter, you will find it a bit of a shock!  

The joys of owning a smart meter means monthly bills of 😲, but then I can look historically and see that £160 a month now becomes less than £50 in summer.  

I'm no expert in thermal imaging either, but it's true that window frames can be less thermally efficient than the actual glazing now, so what I see there doesn't surprise me.  What I see are obvious thermal bridge where one would expect to see them.    You can also see where the trickle vents are on your windows.  

RelievedSheff

Don't forget that in a new house it will be drying out for the first 18 months or so. Evaporation causes a cooling effect so your home may not be as warm as you expected for the first winter.

We moved into our new build last April and we have noticed a big improvement in the warmth of the house from the beginning of November when we turned the heating on to now as the house has dried out.

Our house is smaller than yours a two storey three bedroom detached at 900sqft, but our dual fuel direct debit started out at £60pcm but we built up too much credit and it was reduced to £50pcm. We are still in credit at that after this winter and have recently switched to a cheaper tariff so expect our bill will drop further still.