Please take a look at the following form:
When you test, please enter for successful form: Portland Place, London
To see an unsuccessful entry, please type Perry Vale, London.
The user inputs the location, email and selects bedrooms from a dropdown.
They are then taken to a secondary page, where it displays the monetary value of that specific location/postcode.
We do not require Google API, although it would be a bonus. We have a list of specific postcodes, if the user enters a postcode with a monetary value, they are notified on submission on the second page, how much that area is worth, and can then continue to sign up. Please let me know any questions you have and how quickly you can implement this.