In the mid-1850s Colling was able to establish his architectural practice through contact with the Liverpool banking family, the Naylors, the owners of the Leyland and Bullins Bank. This led to a number of major projects:
Hooton Hall The first of these projects was the partial rebuilding of
Hooton Hall on the Wirral. The Hooton Estate was purchased by Richard Naylor in 1849 from Sir Massy Stanley, who had run up gambling debts. Colling was commissioned to provide plans for a new tower in Italianate style and an orangery. Hooton Hall was demolished in 1932, but some of the columns from the orangery were preserved by
Clough Williams-Ellis at
Portmeirion.
The Albany in Liverpool. The
Albany was erected in 1856 for Richard Naylor, and it was built as a meeting place for cotton brokers. It contained offices and meeting rooms, together with warehousing facilities in the basement. It is one of the earliest examples of
Victorian offices in Liverpool. The central courtyard was originally uncovered, to provide good light for the brokers to examine their cotton samples. To undertake this work Colling formed a partnership with his former pupil John Hubbard Sturgis, now working as an architect at
Leatherhead. Sturgis' father was
Russell Sturgis an American merchant from
Boston who was now chairman of
Barings Bank. This may provide the connection with the Naylors who were major Liverpool bankers. Colling appears to have provided the plans, while Sturgis supervised the work.
Nantclwyd Hall, Denbighshire In 1843
Nantclwyd Hall was purchased from the Kenrick family by Richard Christopher Naylor and in 1857 he got Colling to produce plans for the enlargement of the house which included the south-east wing, in a style matching the original house, except for the substitution of sash windows for mullion-and-transom windows. This part contains a nursery wing with fine plasterwork ceilings.
Ashwicke Hall Colling's next project in 1857–60, (presumably as the result of the Albany), was the building of Ashwicke Hall in
Marshfield, Gloucestershire for the Liverpool Attorney John Orred. This was a massive
castellated Tudor Gothic House with a lofty octagonal tower at the S E. Corner. The octagonal tower is very similar to the octagonal tower at
Leighton Hall, Powys in
Montgomeryshire. Colling is also likely to be the architect for the castelatted gatehouse to Ashwicke Park and Ashwicke Grange.
Garthmyl Hall A further commission was in 1859 from John Naylor, brother of Richard Naylor, who was also a banker and
Montgomeryshire landowner to re-build
Garthmyl Hall, Berriew for his brother-in-law Major-General William George Gold. Colling was given a free hand by the wealthy John Naylor when building Garthmyl Hall, as seen by the use of lavish gilding and plasterwork for ceiling decoration, and for the ornamental terracotta on the exterior. This was an opportunity for him to put into practice some of the designs illustrated in his books.
Church architecture Colling was also responsible for some church architecture and restoration work, including a new
aisle for
Scole church in Norfolk. His most impressive example of church architecture was
St Paul's Church, Hooton, built from his designs for Richard Naylor between 1858 and 1862.
Work in the United States Colling's partner Sturgis became interested in replacing the carved stone with the cheaper
Terracotta, for decorating their buildings and started to bring in commissions from
Boston, using moulded terracotta from
Blashfield's works at
Stamford. In 1869 Colling provided designs for "Pinebank'’ a house in Boston and in 1870 Colling provided some of the designs for the elaborately decorated
Museum of Fine Arts in Boston. Although it was demolished in 1906, it was one of the first major buildings in the US to be decorated with terracotta ornamentation. == Architectural works include ==