Generally, the more valuable a property and the flats therein, the more a freehold will be worth.
Freeholds are generally more expensive in more sought-after areas.
If you think the cost of Collective Enfranchisement may not be right, and you're unsure about commissioning a Pro-Leagle valuation, then check out our Ballpark Freehold Valuation Calculator intended to give you a very rough idea of how much a freehold will cost.