NOTE: Please do not panic over renovations done at Portmeirion. Great care is taken to make sure that the exteriors of the buildings are not changed, and the integrity of the village is left intact. Keep in mind that the cottages were rather roughly put together when they were first built, so they have had to have further renovation and updating over the years. This timeline is provided for those who have an architectural interest in the evolution of the buildings or in the use of the village as a film/tv location. Links below lead to more information and/or photos.
| 1126 |
Original Castell Deudraeth built |
| 1830s |
White Horses built |
| 1840s |
Current Castell Deudraeth built |
| 1862 |
Mansion, Gardener's bothy, and stables completed by Mr. J. A. Westmacott |
| 1869? |
Original Castell Deudraeth razed by Sir William Fothergill Cook |
| 1883 |
Birth of Sir Clough Williams-Ellis |
| 1925 |
Conversion of Mansion into original Hotel, Gardener's bothy into Mermaid Cottage, and the stables into Salutation |
| 1925-26 |
Angel and Neptune built |
| 1926 |
Hotel opened at Easter; Watch House built |
| 1927-28 |
Campanile and Prior's Lodging built |
| 1928-29 |
Government House built |
| 1929 |
Toll House built |
| 1930 |
Stone version of Amis Reunis built into the quay |
| 1930s |
Hercules Hall reerected; Pilot House, Battery Cottage, Dolphin/Royal Dolphin, Fountain and Anchor, Trinity House built |
| 1933-34 |
Chantry built |
| 1933 |
Bertrand Russell wrote "Freedom and Organization in 1814-1914" - in the library at the Castell Deudraeth |
| 1935 |
White Horses renovated |
| 1937-38 |
Camera Obscura built |
| 1941 |
Noel Coward wrote "Blithe Spirit" during a one week stay in May 1941; Kipps (starring Michael Redgrave) filmed on the peninsula |
| War time restrictions on building and renovation (1939-1953) |
|
| 1954 |
Lighthouse built |
| 1954-55 |
Gate House built |
| 1956-57 |
Telford's Tower |
| 1958 |
Bristol Colonnade reerected on the green; High Cloister built; Sir Clough received Commander of the British Empire |
| 1958-59 |
Bridge House built |
| 1959 |
Pantheon built; Five episodes of Danger Man/Secret Agent (starring Patrick McGoohan) series filmed |
| 1960 |
Belvedere built |
| 1961-1962 |
Chantry Row built |
| 1962 |
Playhouse built |
| 1963 |
Triumphal Arch and Gothic Pavilion built |
| 1963-64 |
Arches built |
| 1964 |
Gloriette built |
| 1964-65 |
Unicorn built |
| 1966 |
Villa Winch and Piazza built |
| 1966 |
Filming of "The Prisoner" (starring Patrick McGoohan) series |
| 1968-70 |
Cliff House built |
| 1971 |
Clough Williams-Ellis knighted for "services to architecture and the environment" |
| 1973 |
Portmeirion officially scheduled "as of architectural and historic importance" |
| 1976 |
50th Anniversary of Portmeirion; Scenes from Dr. Who series episode "The Masque of Mandragora" filmed |
| 1977 |
Toll Booth built |
| 1978 |
Terrace Self-Service Restaurant built |
| 1978 |
Death of Sir Clough Williams-Ellis on June 7th |
| 1980 |
Episode of "Citizen Smith" series filmed |
| 1981 |
Hotel destroyed by fire; Government House renovated; Scenes for "Brideshead Revisited" mini-series filmed |
| 1982 |
Dolphin/Royal Dolphin renovated |
| 1983 |
Centenary Gazebo opened |
| 1984 |
Death of Lady Williams-Ellis; Trinity and Mermaid renovated; Episode of "The Tripods" series filmed |
| 1985 |
Chantry and Priors Lodging renovated |
| 1986 |
Toll House renovated |
| 1987 |
Bristol Colonnade renovated |
| 1988 |
Hotel reopened; Episode of "Bread" series filmed |
| 1989 |
Bridge House renovated |
| 1990 |
Pantheon and Pilot House renovated |
| 1991 |
Scenes for "Under Suspicion" (starring Liam Neeson) filmed |
| 1992 |
Fountain and Anchor renovated |
| 1993 |
Campanile, Unicorn, and Chantry Row renovated |
| 1994 |
Telford's Tower renovated |
| 1995 |
Salutation renovated |
| 1996 |
Cliff House Annexe renovated |
| 1996 |
Lighthouse renovated |
| 1997 |
Infrastructure redone Jan-Feb |
| 1997 |
generator installed May 15 |
| 1997 |
coach park gates installed |
| 1998 |
Neptune Cottage renovated and converted into Neptune Suite and Neptune 1 |
| 1998 |
Renovation of Castell Deudraeth begins, Autumn |
| 1998 |
Terrace Self-Service Restaurant renovated, Jan-Mar |
| 1998 |
Town Hall Annexe-- prefabricated structure replaced with a new building called the Tudor Room; Opened May 21 |
| 1999 |
Gazebo painted terracotta and reroofed |
| 1999 |
Second toll booth added; mirror image of the original one |
| 1999 |
The Prisoner Shop (Round House) renovated and reopened |
| 2001 | Belvedere repainted a darker pink |
| 2001 | Castell Deudraeth renovated and opended in June 2001 |
| 2002 | Grates added to bottom of fish pond |
| 2002 | Final episode of Cold Feet filmed on the beach past White Horses |