Having had an estimated valuation by Zoopla of £509K in December (in line with two agents view of it being marketed at over £500K) I found in January that the property had been devalued on their NEW and "BETTER" AVM estimating model by over 37% to £320K!!! This despite paying £260K in 2004 and spending £75K in improvements to a 6 bed listed mill owner's house! Utterly ridiculous. If this wasn't bad enough, ALL houses at the same post code suffered the same fate! Yet, 50 yards away all houses on that post code went UP by 25% on average. Another post code 100 yards away went down by 35%. This proves the algorithm is not sophisticated enough. Literally houses on the same street are suffering massive variation in estimates. my dog could provide a better estimate. Zoopla, you're going to regret this new tool... not a threat but common sense will prevail and your brand and reputation will lead to serious commercial impacts for you. Sort it fast. I have complained and they have removed the estimate for my house BUT not for the others on the street - it takes a fairly unsophisticated human to extrapolate. Shut it down or go back to the old model. Just because you've spent money on this unreliable and unpredictable model, it doesn't mean you have to keep exposing yourself to the risk of damage to Zoopla's brand! I'm sure the shareholders might not put up with any 'holding' bullsh%t for too much longer. Thinking of taking this to BBC.