Information regarding the location of Paulsgrove House

Paulsgrove House appears to have been demolished in 1970 to make way for the M27, but I've been unable to accurately identify where this was located on a map.

Based on old maps and the shape of the surrounding land, I believe it was roughly here, but am unsure:

Can anyone confirm or deny?

Thanks!
LP

I love a bit of map/other types of research. Using the very book-markable website of the National Library of Scotland, I found some helpful images. This website has a considerable number of search and viewing possibilities, so you may wish to read some or all of the help section before you start. There is a large number of maps you can look at in order to see what you want. Experimentation is useful, or it has been for me in the past.

I used a couple of different historic maps to get the best images.

1) Here's an image of Paulsgrove. I believe the house is the oblong shape on the right, with a footpath around it.

2) Next is an image of the same historical map side by side with its modern counterpart. When you're on the actual website you can move a cursor around and it shows you the same spot on the modern map, which here you can see at the small cross in the trees. That's where I think the house was. The trees, which must have been planted after the 1970 demolition.

3) Finally, a fun image which is really specific - an overlay of old and new maps. You can vary this yourself. One other thing I was interested to note was that the modern land edge is different from the original one - it's been infilled. You should to be able to go straight to this at
https://maps.nls.uk/geo/explore/print/#zoom=18.0&lat=50.84696&lon=-1.10181&layers=6&b=ESRIWorld&o=60.

Hope this helps!