Offering a planning application, site assessment and drafting service. Any point?

Hi. I'm a civil engineer working with a multinational consultancy.

As a means of earning a little extra income I'm considering whether it is a) possible and b) worthwhile at getting into offering a service for submitting planning applications and doing site assessments/precolation tests, drafting etc for domestic projects and farms. My brother did it some time ago as a side before emigrating.

I'm hoping someone can advise me as to what I would be likely to be facing into, if it is even worth it or perhaps, even, if I am half cracked and this is a complete non runner!!.

I'd obviously need PI. What can I expect to pay and if I give up the gig do I need to keep on for a certain number of years?

One major major obstacle I see in this is that I'm not yet chartered so cannot fulfil an assigned certifier role. I would imagine most people building would favour a one-stop-shop for site assessment, drafting, planning, and assigned certifier. Does this mean it is a no-go?


Then there's the issue of potential moonlighting - I'm working with a large consultancy that generally deal with large infrastructural projects. The is a no-compete clause in my contract but to be fair there wouldn't be any competition as the company I work for wouldn't be involved in small domestic stuff anyway. And from what I hear most are tipping away at a few nixers on sly, it's a given and a blind eye is turned and nothing is said.... What do ye think here?

Thank you all!