The introduction of locked alley gates has boosted security and cut burglaries in terraced housing areas, police say.
Residents are finding gates are helping to cut burglaries
Home security officers claim the number of burglaries in the central part of the county halved over the last year.
Norwich saw more than 400 fewer break-ins during the 12 months to January compared to the same period in the previous year.
Insp Peter Walsh, leading the campaign, says more households will get the gates because they are so effective.
Alley gates are designed to make access to the backs of terraced housing more difficult for intruders.
Saved householders £1m
Insp Walsh said: "These are vulnerable areas and we're aiming to stop unauthorised access.
"In the areas where the gates are installed in Norwich there have been 425 fewer burglaries over the past 12 months to January.
"A Home Office study revealed that a burglary costs about £2,350 in repairs, restoration of goods taken and other things.
"That means the gates have saved the people of Norwich about £1m as well as the considerable distress which accompanies attacks of this kind.
"The gates work alongside more targeted police operations, neighbours looking out for each other and more vigilance all round."