When the Prince of Wales took possession in August 1783,
Sir William Chambers was appointed as architect, but after a first survey, he was quickly replaced by Henry Holland. Both Chambers and Holland were proponents of the
French neoclassical style of architecture, and Carlton House would be extremely influential in introducing the
Louis XVI style to England. Holland began working first on the State Apartments along the garden front, the principal reception rooms of the house. Construction commenced in 1784; when these rooms were visited in September 1785 by the usually critical
Horace Walpole, he was impressed, writing that when completed, Carlton House would be "the most perfect in Europe". The chimney-pieces were added 1783 to 1785 by the London sculptor
Thomas Carter the Younger. Construction at Carlton House came to a halt at the end of 1785 due to the Prince of Wales's mounting debts, with his unpaid bills following his secret
morganatic marriage to
Maria Fitzherbert amounting to £250,000.
Parliament appointed a commission to investigate the huge cost overruns at Carlton House, and to draw up estimates on how much would be needed to complete the project. In May 1787, the Prince of Wales contritely approached his father, King
George III, and persuaded him to provide the money to finish the house. When work resumed in the summer of 1787, with a budget of £60,000, it was with the assistance of many of France's leading furniture makers and craftsmen, under the design supervision of the Parisian
marchand-mercier Dominique Daguerre, interior decorator for
Marie Antoinette, who acted as the agent through whom furniture by
Adam Weisweiler was imported. A stained glass window was supplied by
William Raphael Eginton. Circa 1816, he described it thus: When completed, Carlton House was approximately long, and deep. Visitors entered through a
hexastyle portico of Corinthian columns, which led to a foyer that was flanked on either side by anterooms. The building was unusual in that visitors entered on the main floor, in contrast to most London mansions and palaces of the time, which followed the Palladian architectural concept of a low ground floor (or rustic) with the principal floor above. From the foyer, visitors would enter the two-story top-lit entrance hall, decorated with Ionic columns of yellow marble
scagliola. Beyond the hall was an octagonal room that was also top lit. The octagonal room was flanked on the right by the grand staircase and flanked on the left by a courtyard, while straight ahead was the main anteroom. Once in the anteroom, visitors could turn left into the private apartments of the Prince of Wales, or right into the formal reception rooms: Throne Room, drawing room, music room and dining room. The lower ground floor comprised a suite of low-ceilinged rooms, including a gothic dining room, a library for the Prince, a Chinese drawing room, and a
perpendicular gothic conservatory constructed of cast iron and stained glass. This suite of rooms was equipped with folding doors which when opened created an
enfilade of eight rooms terminating in the conservatory allowing, on one occasion, the entire length to be set out as a single banqueting table. The ground floor rooms gave directly onto the garden facing the Mall, which had a landscaping scheme by the fashionable designer
Humphry Repton. An earlier garden design by
William Kent had been undertaken for the Prince's grandmother
Princess Augusta but had been swept away. Besides the French décor and furniture, Carlton House was hung with a collection of works of art, of which many collected by the Prince are now in the
Royal Collection. The Prince patronized contemporary artists such as
Reynolds,
Gainsborough, and
Stubbs. With
Francis Seymour-Conway, 3rd Marquess of Hertford and Sir
Charles Long acting as his art advisors, the Prince also bought
Old Master paintings by
Rembrandt,
Rubens,
van Dyck,
Cuyp and
Jan Steen. An 1816 inventory of Carlton House showed 136 pictures in the State Rooms, a further 67 in the Prince of Wales's private suite, and another 250 in other parts of the house. ==Demolition==