The blaze, which started at about 6pm on Friday at a garage in Buckfield Road in the Baron's Cross area of the town, spread to four semi-detached properties.
Firefighters wearing breathing apparatus split into two teams to battle the blaze, while Cadent and Western Power Distribution were called in to isolate gas and electricity supplies.
Crews from Leominster, Worcester, Hereford, Leintwardine, Kingsland, Tenbury Wells, Ewyas Harold, Peterchurch and Eardisley were all called out to deal with the fire, and black smoke was seen over the town for hours.
A fire service spokesperson said: "Crews were called at 18:06 on 8 July to a fire which involved a garage and spread to four semi-detached houses, which were well alight.
"The incident was sectorised into two sectors, with eight firefighters wearing breathing apparatus.
"The fire was fought using three main jets and three hosereel jets as well as a safety jet. An aerial ladder platform and the service drone from Ledbury Fire Station were also deployed.
"There were no casualties and West Mercia Police were also in attendance."
Group Commander Dave Swallow said: “Crews found a rapidly developing fire on their arrival and worked hard from the outset.
“Although two properties were significantly damaged by fire, the two adjoining properties have been saved by the hard work of fire crews to stop the fire spreading.”
Crews were continuing to damp down on Saturday morning, with one relief crew currently in place.
Firefighter Dave Swallow tweeted: "Good, assertive firefighting attack in hot conditions this evening by @HWFireLeominstr and @HWFireKingsland to prevent further spread of this well-developed fire. Great support from @HWFireControl @HWFireTenbury,@HWFireEwHaroldand @HWFireHereford
Good, assertive firefighting attack in hot conditions this evening by @HWFireLeominstr and @HWFireKingsland to prevent further spread of this well-developed fire. Great support from @HWFireControl @HWFireTenbury @HWFireEwHarold and @HWFireHereford pic.twitter.com/R25uyCHCsP— Dave Swallow (@SwallowDave) July 8, 2022