The year 1777 in architecture involved some significant architectural events and new buildings.

Events

• April 21 – The foundation stone of Wesley's Chapel in London is laid.

Buildings and structures

Buildings completed

• Corselitze, Falster, Denmark, designed by Andreas Kirkerup.
• Drumcar House, Ireland.^[1]
• Reformed Church, Lompirt, Romania.^[2]
• Rococo-Classicist Roman Catholic Church in Malý Kiar, The Glorification of the Saint Cross.
• Wenvoe Castle, Vale of Glamorgan, the only building in Wales designed by Robert Adam.^[3]
• Home House, Portman Square, London, completed to the design of Robert Adam.
• Richmond Bridge, London (across the River Thames), designed by James Paine and Kenton Couse.

Births

• February 13 – James Trubshaw, English builder, architect and civil engineer.^[4] (died 1853)
• September 9 — John Holden Greene, American architect based in Providence, Rhode Island (died 1850)
• October 11 – Fop Smit, Dutch architect, shipbuilder, and shipowner (died 1866)

Deaths

• March 3 – Sir Thomas Robinson, 1st Baronet, English nobleman and amateur architect (born c.1703)
• December 23 – Thomas Farnolls Pritchard, British architect and interior designer (born 1723)