It was a rectory but is now known as Ashe House.
{As to dates, it looks as if it might be around 1750 to me; or would the fanlight make it a bit later?}
Yes, I think your date is just about right. It is early Georgian by any account. But the actual date is hard to decipher! As far as the fanlight, yes, those came in at mid century, but the doors were often cut to accommodate the fanlight. (The first two decades of the 18c features very tall doors :-) and gradually it became a popular practise to reduce the height of the door and replace the upper recess with a fanlight) The spiderweb tracery was very common to early fanlights. The six-panelled door was typical. Another indication of the date of the home is the sash windows. The Building Act of 1709 (for London and 1724 for the rest of England) required windows to be inset by the depth of one brick (four inches). (before this the windows were generally flushed with the wall face which was apparently a fire hazard). The Building Act of 1774 complicated this requirement further by demanding that the window jambs be recessed behind the outer face of the building, which would have left only a thin profile of the sash visible and the window panes themselves would be dramatic. I have a fairly good photograph of the building and the windows do not seem to have this latter feature. The jambs do not appear to be embedded so much that you cannot see the them. The central pediment on top of the door and at the roof were very typical for both early and late Georgian. The brickwork lintels (fanned on top of the windows)were also very typical to the early Georgian period but we also seen late too) 1750 or so sounds good to me ;-) I also have a picture of the drawing room to this house and it's simplicity would fit that date as well. But it is hard to tell, really, I think the inside of the house would have been changed, the fireplace especially.