In the early 2000s, the MBTA modified key surface stops with raised platforms for accessibility.
Brookline Hills was not among those initially outfitted with portable lifts, nor was it retrofitted with raised platforms.
However, portable lifts were installed by 2003.

Around 2006, the MBTA added wooden mini-high platforms on both platforms, allowing level boarding on older Type 7 LRVs.
These platforms were installed at eleven Green Line stations in 2006–07 as part of the settlement of Joanne Daniels-Finegold, et al.
v. MBTA.

The station is being renovated with fully accessible platforms as part of an expansion of Brookline High School, which includes a new school building partially over the eastern end of the platforms.
Construction is expected to last from late 2019 to mid-2021.
In the early 2000s, the MBTA modified key surface stops with raised platforms for accessibility. Brookline Hills was not among those initially outfitted with portable lifts, nor was it retrofitted with raised platforms. However, portable lifts were installed by 2003. 
Around 2006, the MBTA added wooden mini-high platforms on both platforms, allowing level boarding on older Type 7 LRVs. These platforms were installed at eleven Green Line stations in 2006–07 as part of the settlement of Joanne Daniels-Finegold, et al. v. MBTA.
The station is being renovated with fully accessible platforms as part of an expansion of Brookline High School, which includes a new school building partially over the eastern end of the platforms. Construction is expected to last from late 2019 to mid-2021.
Brookline Hills station