Agree with @Welshmum2010
Buy somewhere scruffy, do it up, move or extend, buy another dump, do it up, move etc.
Flat 1 (2 bed) - no heating, 1950s kitchen, aerosoled gold ceilings
, took 4 years.
House1 (2 bed) - contained the possessions of previous, deceased occupant. No heating, no kitchen, damp from crumbling mortar, no insulation etc. took 9 years.
House 2 (3 bed) - rain running through mid bedroom and down dining room walls, earth floor in the cupboard under the stairs
. Took 9 years
House 3 (4 bed) - after 10 years, warm, dry, new windows, doors, kitchen, boiler, wiring. Reroofing booked for next spring.
Not easy with DCs in tow though. I only did the last one with DS around.