Conservatory to join house to annexe.

[monstergoose]

We've got an annexe next to the house (used to be the garage-converted by previous owners) that we're thinking of joining to the house with a conservatory type building. Ideally I'd like to attach it to the side o the house and knock through the exterior wall (where there currently is no opening) to allow an open plan arrangement with a large archway as the gap( and no doors) my other option is to take it across from the back door but this would be less free flowing although would probably cost less. Is this a builder or conservatory company type job? Don't want to get a botch job and have had previous bad experience with builder in last house. Any tips on joining 2 buildings with a conservatory?

I think you should start with an architect.

You'll need a lintel if there is no current opening, which might need building regs.

You definitely need an architect, but think very hard about having an archway as conservatories are extremely cold in winter and, if you can't shut it off from the rest of the house, it will suck out and lose all the heat from the rest of the house.

Have you thought about an orangery to close/bridge the gap. Less glass but very cool roofs that let loads of light in but aren't as cold as conservatories

Didn't think about needing an architect, thanks that's useful, will google local ones. I'm thinking more orangerie type than conservatory as would like some stone walls rather than all glass.

you could do green oak and glass - i've seen that on some properties and works really well on part old part modern properties.

My neighbour just did this. They used an architect and needed planning permission.