Catton postmill stood on Mill Hill just to the east side of St Clement's Hill, adjacent to the towermill.
Harry Apling queried as to whether it was built c.1708.

To be SOLD
A DWELLING HOUSE and piece of LEASEHOLD LAND containing by estimation Two Acres or thereabouts, for the Remainder of a Term of Eighty Years of which there are Thirteen years yet to come and will expire the 10th April 1788.
Also two exceeding good CORN WINDMILLS now in full Business and excellent Repair standing on the said Leasehold Land.
For further Particulars enquire of Mr. North, Attorney in Norwich.
Norfolk Chronicle - 25th February 1775

To be SOLD
TWO WINDMILLS standing out of Magdalen Gates, City of Norwich, commonly called CATTON MILLS.
Also a House, Stables, Brewhouse etc. together with a Piece of Land containing two Acres by Estimation, Leasehold, of which there are 13 Years unexpired.
For further Particulars enquire of Mr. John Nickless of Tasburgh or of him at the Red Lion in St. Stephens on Wednesdays or Saturdays.
Likewise the Lease of a Parcel of Land adjoining to the same containing 17 Acres, more or less, if it be agreeable to the Purchaser. Together with a Barn standing on the Premises.
Norfolk Chronicle - 22nd March 1775

To be SOLD
or LETT for Two Years and a half
An exceeding good WIND MILL, situate within half mile of the City in the Catton Road, containing one Pair of Stones, a Boulting Mill and cylinder; with all necessary Going Geers, Scales, Weights etc.
For Particulars enquire of Mr. Isaac Ayton, Baker or Mr. John Wright, Appraiser, Norwich.
Norfolk Chronicle - 13th August 1785

c.1708: Possible date for mill being built

Poll Book 1768: Thomas Brereton Steward, miller

February 1775: Mill advertised for sale in conjunction with New Catton towermill and the mill house

March 1775: Mill advertised for sale along with New Catton towermilll, the house, stables and brewhouse

August 1785: Mill advertised for sale or let

Poll Book 1784: Thomas Brereton Steward, miller

Poll Book 1785: Isaac Ayton

August 1785: Mill advertised for sale