A double closing for instance wouldn't be practical since capital gains and a property tax (6% of sales price) are immediatly due - twice.

I also have been reading/studying/jumping around What Every Real Estate Investor Needs To Know About Cash Flow.I hope to put a plan in place in the next few months, and then practice running deals until I am in financial position to act on a deal. 

Property prices in my area which consist of 4 Bedrooms 2 bathrooms start at £250k, I believe.

If you want solid results then you need to be consistent.

Lesson Learned: if it doesn't serve a purpose in your life, let it go early, move forward, and gain ground on purpose.Now, I find myself wanting to get serious and work a wealth-building model that will create wealth through passive income and long term asset growth by solving problems and meeting needs.My high level business model consists of flipping properties (wholesale & rehab) to generate cash down to purchase commercial and MFR properties with reduced financing balances to generate long-term positive cash flows.

We asked the broker to show us the center either during or right after a rain came through so we could see the real issues; as if the consistent water stains on the walls, columns and ceilings weren't enough to know the roofs were in really bad shape. 

Practically zero.

Like you said, mortgage rates are between 3.5-4.75% for residential loans on 30 year mortgages, when you then factor in an expected average inflation rate of about 2% and the fact that you can deduct interest that's practically free money.

Also, a consistency of income will play into it.

There may be a few legitimate ones, but that is not a common practice here in CA, and there are as many bad stories as good.