The number of buildings and open spaces in Jersey being protected by a 1983 law has increased six-fold.
Islanders can apply for restrictive covenants, a legal agreement preventing alterations being made to the protected area to maintain the "character".
Seven restrictive covenants were successfully applied for this year including a beachfront home in Rozel.
Charles Alluto from the National Trust for Jersey said: "We're delighted. We want to keep the momentum."
He said: "Although there are restrictions they are not unrealistic or impractical, they're simply there to protect the land or the character for the future.
"I think people get scared by the word 'restrictive covenants' but actually its a positive thing."
Mr Alluto said that applying for the legal agreement cost between £500 and £1,000, but did not prevent repairs being made to the building.
He said: "It doesn't stop you selling or gifting it to your children, all it does is ensure that the character stays the same forever."
In 2009 a meadow in St Peter was protected by the agreement, preventing building work taking place on it in the future.
The National Trust said that there was no restriction on which buildings or open spaces qualified for restrictive covenants.