For example, houses can be built with future extensions in mind.

The society has proposed future extensions of their line, possibly into or near the city centre.

A large amount of land lies behind the station, for future extensions of the line.

A future extension could eventually reach the airport, completing the line as envisioned.

However, the design allows for future extensions that could increase the capacity to 6,500 spectators.

The said interchange was built in 1984, designed to allow for future extension northward.

The tracks on both levels extend past the station for possible future extensions.

There are many plans for future extensions and two projects are in active development.

The tracks continue into short tunnels in the hill, allowing for a future extension.

In this case, any future extension through the horizon is non-unique.