The best thing to do is to get a written quote – or 4 – then sit down with it and figure out what else you are going to need to finish the job.
You can make a good start by going here to see an in depth article about What are the most popular conservatories & how much do they cost?
Sash windows prices & Bifold windows prices are likely to be the highest. Next in line are tilting, with casement usually being the least costly. See a more accurate breakdown here: https://www.mylocalprices.co.uk/cost-guide/double-glazing-prices/
Lean-to conservatories, especially those with UPVC frames and a poly-carbonate roof can easily be considered the best option when it comes to value for money and for the ability to fit into small spaces nicely.
Softwood doors with a hardwood veneer can be some of the cheapest, with UPVC being a close second. Aluminium and composites will cost more. UPVC is a good choice because it’s relatively inexpensive, a good insulator and lasts a long time.
If you are seriously considering fitting a new set of patio doors, you should check out this article: https://www.doubleglazingpriceguide.org.uk/how-much-do-upvc-patio-doors-cost/
if you are thinking of patio door options then consider these exterior door designs:
To protect the framework, you also must frequently repaint or re-varnish it with coatings that have anti-repellent mixture. And of course, keeping it clean would dissipate the termites.
How much do sash windows cost? – find out more here: https://www.upvcwindowsfitted.co.uk/double-glazing-cost/
Through careful forethought, planning and soil preparation you can construct an awesome garden room space, a true extension to your home’s internal living area, and add considerable value to your home at the same time.
Go here for more info & price guides: localconservatoryprices.co.uk/how-much-does-a-modern-conservatory-cost