The estate became dominated by its neo-Elizabethan mansion after a fire of 1843 destroyed one third of the predecessor and various landscape features were added which have resulted in building and grounds being Grade II* listed.

Rebuilt by Daniel Burr in 1848 following a huge fire, the new manor was built in the Elizabethan style, and incorporated the figured wooden staircase, some stained glass, and the chimney stacks from the 1636 house, which was later demolished.

[1][2] Aldermaston Park is an ancient and derelict wood pasture, featuring numerous examples of pollard oak and sweet chestnut.

[3] Robert FitzAchard (1070–1161[5]) was granted the Aldermaston estate in 1100 by Henry I of England; no records of the house at this time have survived.

[1] The estate descended to Peter Achard who died in 1361 with a female heir (daughter); it was inherited by Thomas de la Mare as his son-in-law.

[6] During Humphrey II's lordship, he faced strong disputes with Francis Parkyns (alternatively spelled "Perkins"[7]), who was the brother of the Squire of Ufton and tenant of nearby Padworth Manor.

In 1643, after the First Battle of Newbury, Robert Devereux's Parliamentarians were attacked by Prince Rupert of the Rhine in Padworth Lane.

[9] In October of the following year, a regiment of Parliamentary troops under the command Edward Montagu, 2nd Earl of Manchester camped in the Aldermaston area.

[6] They were defending the crossing at the River Kennet, an operation that came about due to Humphrey Forster's staunch Royalist support.

[12] To install them, the estate's north-west lodge (a dower house[9]) was dissected (removing the 60 square metres (650 sq ft) centre section).

[6] In approximately 1800, Congreve had a stable block built due west of the house; this is extant and until the site's vacancy was used office space.

[17] Aldermaston Manor[n 1] passed into the Court of Chancery, and was eventually purchased in 1849 by Daniel Higford Davall Burr.

He commissioned Philip Charles Hardwick to build today's edifice in a Neoclassical style; the present mansion house was built using as much of the old material as possible that had been saved from the fire.

[20] Keyser, who was born on 10 September 1847 and came from Hertfordshire[21] had previously established a successful career in the City of London, having gained a Master's Degree in Law at Cambridge University.

[22] Keyser's attention was drawn to Aldermaston by his sister Agnes, who said that the court reminded her of her stay at Sandringham House.

Their son, Charles Norman, had no interest in running the estate and his heavy asthma led him to move to Adderbury, Oxfordshire.

[19] Muriel and Sybil, their daughters, had expensive taste with racehorses and ponies, and their brother sold the whole estate to a syndicate, Messrs Cribble, Booth and Shepherd, for £100,000 who auctioned it in lots at Reading Town Hall, beginning on 20 September 1939.

[6][24] After the war, the airfield remained in use and was run by BOAC, who operated it as a pilot training academy then from 1947 to 1950 as a civilian airport.

[28] The house and grounds were purchased by Holaw (420) Ltd. in 1997, who under its former name, Aldermaston Manor, converted it to a hotel and conference centre.