Professional electricians, plumbers, HVAC,... are trained to handle repairs and brand new installations, and can be held accountable if they do sub-par work.It's a mental trick. 

It is not listed on a reputable stock exchange.

It is difficult to get one with phone numbers because reputable brokers won’t provide the numbers of people who have signed up for D0-Not-Call.

The plumber?

When you do provide it (e.g. applying for loan in your own name), make sure they are a reputable company.Unfortunately identity theft is a real thing and can really screw up your life for year and years once it happens.Oren

Finding a good contractor is a process--however, you may be able to pull leads by calling PM companies and getting their handyman/plumber/electrician contact info. 

Definitely seek the services of a reputable attorney who can memorialize the economic agreement between you and your partner. 

Needing to understand;1) best way to get build plans and find a reputable small multi family builder?

Hello BP community,Seeking recommendations for a reputable carpenter or contractor that has experience in building custom bars for residential basements.

I don't think you need to worry about age or lack of experience if you're working with a reputable bank or a (good) lender.