Zoopla accuracy

[INeedABarbieDreamhouse]

I understand that Zoopla is an algorithm but how accurate is the estimated house value?
My own house has sold just above the top estimate and I have done significant internal work since I bought it.

I'm interested in a property that has been on the market more than 6 months. It's currently empty and needs new kitchen, bathroom etc. It was valued significantly (as in over 20% more) above the current asking price but has been reduced since. It's still £60k over the zoopla price. I offered in this ballpark which I think is a fair price based on the area, but more than 10% under asking. They refused it understandably.

I'm reluctant to increase my offer but there's nothing else on the market and I think I'd be sad if someone else buys it because it has so much potential -heart talking.

I don't want to pay significantly over for something that isn't going to be worth that when all of the work has been done - head talking.

Any thoughts?

I don't understand the Zoopla estimates at al, I live on a street of identical houses and our top value is the same as next doors bottom -yet ours has had far more work done

Wildly inaccurate for our last house, which we sold in August for £20 k less than the lowest Zoopla estimate (but £30 k above the asking price as indicated by three local EAs). The values for the whole road of similar houses are way out, I think, as our neighbours’ house (same as ours but very high-end decor and a larger garden) sold for £30 k less than its lowest Zoopla estimate. Both sold for nearly £100k less than the highest Zoopla estimate.

Ridiculously off - they had our last place as worth 380K and it sold for 450K (but we think they based it on the top floor flat - smaller, no garden, 60 year lease). Don't put any store by it whatsoever.

Zoopla has my place listed with less bedrooms, and as a leasehold not freehold.
The listing is completely incorrect and the price reflects their mistake.
I don’t think they have any way of correcting these errors.

Zoopla randomly said that our house was £100k more expensive than other similar ones on the street, this is on houses that are generally around £300k, it was ridiculous.

it's rubbish.

ours is about 40% undervalued on it