The phrase "a considerable extension of" is correct and usable in written English.
It can be used when discussing an increase or expansion in scope, size, or duration of something.
Example: "The new policy represents a considerable extension of the previous regulations, aiming to cover more areas of concern."
Alternatives: "a significant expansion of" or "a substantial increase in".
On the contrary, the UK, because of the need to find extensive evidence about supermax prisons, asked for a considerable extension of time to submit information.
Gove's position as chief whip, working with his new deputy and fellow Osborne ally Greg Hands, marks a considerable extension of the chancellor's power base.
During the troubled 1930s, however, Horthy assumed more and more control, and in 1937 the Parliament voted a considerable extension of his powers.
It was, in fact, a considerable extension of the Monroe Doctrine, not a correct historical interpretation of it, but it remained the cornerstone of American policy in the Caribbean at least until 1928.
For there is a considerable extension of time between the visits to the picture gallery, the museum, the library.
A considerable extension of the working window with the absence of each, especially at the anodic region, is observed when GPESMAC is used.
Marketization can require a considerable extension and use of government power.
So here as artist-in-residence he promises to infiltrate the Long Gallery with a work-in-progress scaffolding of TV monitors, record players and strip lighting titled A Considerable Extension In Time And An Insignificant Extension in Space.
Thus, for the moment it cannot be ruled out that T9205C is a benign or mildly deleterious variant, despite the considerable extension of the amino acid chain.
A striking feature in this respect is the considerable extension of some ePK families in some organisms but not in others.
Shirk, however, received considerable extension of meaning throughout the dogmatic development of Islām.
