The operators of Chorley Crematorium are looking to carry out improvement works at the Charnock Richard facility.
It follows complaints from mourners about access, parking and traffic congestion.
A spokesman for Midlands-based Dignity, which runs the crematorium, said: “Charnock Richard Crematorium has 51 car park spaces, a similar amount to other crematoria in Lancashire, but we are considering an extension to the car park and straightening the approach road.
“Service times at Charnock Richard Crematorium are one hour apart, twice as long as at many other crematoria.
“The average service lasts 20 to 30 minutes which means that mourners don’t feel rushed and can enter and leave the car park without seeing another funeral cortege.
“The vast majority of funeral businesses will provide advance warning if they are expecting a large congregation so that we can provide staff to help direct traffic if required.
“However, on September 30, a service at 2pm had the largest congregation since the crematorium opened and some mourners parked on the approach road.
“The funeral business conducting the next service scheduled to start at 3pm arrived 20 minutes early and had not given advance notification this would also be a large congregation. We have previously asked this business to co-operate with adhering to service times so as not to disturb other services or cause congestion.
“The crematorium was designed and constructed by another company that specialise in building crematoria. All appropriate building and planning regulations, including car parking and the approach road, were sought and granted prior to Dignity acquiring the crematorium in 2009.”