In reply to kipper12:
Leaseholds are unattractive for many, many reasons.
Legally they are complicated, often they have defective clauses on maintenance and ownership. It seems rare to get two solicitors with the same opinion and attitude to risk.
The freeholder can change and a good relationship can be replaced with one where the charges are extortionate. You have no control as a leaseholder.
Leases often have restrictive clauses which have been ignored by current owners.
Buying the freeholds, or extending the lease can be horrifically complicated and also expensive. You have no legal right to extend until you've lived there two years.
Emotionally, certainly for a house, people probably don't like the idea of still not owning actual assets made of bricks, especially if they've been renting for a long time to save up. Buyers are more wary these days, much more risk averse.
Your solution is to buy the freehold. £2k is a snip and it will make your property more attractive. Continuing down the same path just assuming that buyers are stupid is the road to disappointment and a lengthy sale.
*my experience is from trying to sell a leasehold flat for over two years. I know, not a house.