Change one letter.

[Ade McDade]

Stain

Stein

 

[Suffolk Supper]

Steit

 

[Gerryjo]

Steit

Stint

 

[Suffolk Supper]

PINTS

 

[Ade McDade]

PINTS

Pants

 

[hop-a-long]

Pants

paints

 

[Gerryjo]

Pants

Stamp

 

[Gerryjo]

paints

Six letters.

 

[Suffolk Supper]

Stump

 

[hop-a-long]

Six letters.

Sorry about that, that last 's' shouldn't have been there.

 

[hop-a-long]

Stump

Slump

 

[Suffolk Supper]

Clump

 

[hop-a-long]

Clump

Plump

 

[Suffolk Supper]

Plumb

 

[Wigglebutts Brewery]

Plums

 

[Gerryjo]

Plums

Plume

 

[Suffolk Supper]

Flume

 

[Stu's Brews]

Flume

Fumes

 

[Suffolk Supper]

Smurfs

 

[Stu's Brews]

Smurfs

You seem to have ended up with an extra 's' so I'll ignore the last one...

Farms