At this stage your brief is far too vague to start throwing around definitive solutions. You should probably have a think about defining your needs, your priorities and and your expectations. You might also want to think about budgets. I realise this is a chicken and egg question, but if you have some rough expectations then at least that's a start.



You can go entirely Sonos with products such as Playbar, Sub, Play Ones for the TV rooms, then standalone speakers for other areas. Or you could mix Sonos with 3rd party products such as in-ceiling speakers or even full Dolby Atmos/DTX surround systems.





Options to investigate:



TV Room(s):

- Playbar/Playbase, Sub, 2x Play One

- Conventional AV Receiver + 5.1/7.1 speaker system + option of Atmos/DTX in-ceiling speakers + add-on Sonos Connect streaming player





Open plan areas:

Question - Do you want multiple zones i.e. kitchen + dining area + seating area (3 zones) or do you want to run the whole area as one?



- Consider the Play One/3/5 speakers with or without a sub

- Consider Sonos Connect Amp(s) + in-ceiling speakers / or architecturally invisible speakers





All the Sonos items are priced on the web.



In-ceiling speakers - budget around £300/$400 per pair + £50/$70 per fire hood for any and all installed where there's a living space in the area above. .Check with local fire code regarding requirements to fit hoods where there's vacant loft space above. Code varies from contry to country. Belt & braces is also to check with the insurers too.



Home cinema gear - prices range from £1000/$1200 for a decent basic 5.1 receiver + 5.1 speaker package with app control and 4K HDR compatibility to over £20,000/$24,000+ for an all-singing 7.4.4 home cinema kit that would be the envy of the whole town. Add Sonos gear as appropriate to needs).







Further considerations: Do you want sound outside?





Final thoughts for now - If the install is likely to involve a lot of architectural products (structured wiring, network infrastructure, in0ceiling speaker etc) then have a think about involving a specialist Audio Visual installation company. Don't be tempted to leave this in the hands of an electrician and hope for the best. They rarely understand AV in sufficient detail to avoid mistakes that are costly to rectify later on. See this thread as an example https://en.community.sonos.com/what-to-get-228989/need-some-help-with-designing-my-setup-connect-amp-s-6796072

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