How much for an architect & structural engineer?

[LittleMilla]

We're hoping to knock through back of our house (kitch/diner/outbuidling) and add a 2.3mx3.5m single story extension to create a big open plan living space.

On the recommendation of a builder I have had over (and like - he seems to be v.good and also comes highly recommended) we have an architect coming in a couple of weeks.

Naiively I have NO idea how much an architect charges? Builder also talking about needing to have a structural engineer to work out where there will need to be additional support etc.

Before we lay a brick, how much should we expect to pay? Should I shop around for architects in the same way I am planning with the builder. i.e. get in a couple of quotes?

What's the protocol on all of this?

Thanks

Yes I also know this thread is old but we thought we knew what we wanted originally, but fortunately we got a proper architect and they basically gave us options to layout downstairs differently, which wasn't at all what we expected. We're paying out over 10k before the builders even turn up (Monday morning!) but I suppose it's always going to be cheaper in the short term to build the wrong thing.
At the end of the day I think if you're spending thousands, am architect would be wasteful, but for tens of thousands, you won't regret it. They just think in a different way from you and I, in a good way!

I know this is a v old post but @Pendeen, are you still out there?! If so, where are you based?

Replying to NoMoreMissusNiceGuy

Paying an engineer £100, what is that for making you a cuppa?

Or are you expecting them to:

• Calculate permanent and variable actions acting on your building.
• Designing your structure with appropriate engineering materials i.e. steel, concrete, masonry and timber in accordance with British and European standards.
• Produce engineering drawings with tender and construction level detail.

No engineer worth his salt would ever work for £100. Any "engineer" willing to do so will be producing absolute rubbish.