Smirke was involved in Building restoration, several commissions coming to him via his post in the Office of Works:
Gloucester Cathedral (1807), Gothic screen behind the high altar; removed 1873.

Carlisle Cathedral (1809–11), repairs and alterations to the Fratry.

Powis Castle (1815–18), restoration of battlements, window mullions etc.

Savoy Chapel (1820–21), rebuilt south wall and added the west tower.

Bodleian Library, Oxford (1830) repaired the roof and inserted a new ceiling in the upper reading room in the schools quadrangle.

Clarendon Building, Oxford (1831) fitted up the interior as university offices.

York Minster after the arson attack on the chancel of the cathedral in 1829, Smirke oversaw the restoration (1830–32), which involved rebuilding the roof and vaults plus the recreation of the choir stalls
Palace of Westminster, (1834–37) he refaced the interior of Westminster Hall after the fire of 1834 and erected a temporary House of Lords in the Painted Chamber and a temporary House of Commons in the remains of the former House of Lords.

Banqueting House, Whitehall (1835–38) repairs and internal alterations.

Mansion House, London (1836), redesign of the external steps to the portico.

St. James's Palace (1836–37) refitted the interior of the Chapel Royal.

St James's Church, Piccadilly (1836), repairs to the roof
Serjeant's Inn (1836–39) extensive reconstruction work, destroyed 1940 during the London Blitz.
Smirke was involved in Building restoration, several commissions coming to him via his post in the Office of Works:
Gloucester Cathedral (1807), Gothic screen behind the high altar; removed 1873.
Carlisle Cathedral (1809–11), repairs and alterations to the Fratry.
Powis Castle (1815–18), restoration of battlements, window mullions etc.
Savoy Chapel (1820–21), rebuilt south wall and added the west tower.
Bodleian Library, Oxford (1830) repaired the roof and inserted a new ceiling in the upper reading room in the schools quadrangle.
Clarendon Building, Oxford (1831) fitted up the interior as university offices.
York Minster after the arson attack on the chancel of the cathedral in 1829, Smirke oversaw the restoration (1830–32), which involved rebuilding the roof and vaults plus the recreation of the choir stalls
Palace of Westminster, (1834–37) he refaced the interior of Westminster Hall after the fire of 1834 and erected a temporary House of Lords in the Painted Chamber and a temporary House of Commons in the remains of the former House of Lords.
Banqueting House, Whitehall (1835–38) repairs and internal alterations.
Mansion House, London (1836), redesign of the external steps to the portico.
St. James's Palace (1836–37) refitted the interior of the Chapel Royal.
St James's Church, Piccadilly (1836), repairs to the roof
Serjeant's Inn (1836–39) extensive reconstruction work, destroyed 1940 during the London Blitz.
Robert Smirke (architect)