Building a treetop walkway in Malabar Hill will now cost the Brihanmumbai Municipal Corporation (BMC) Rs 22 crore, about 40 per cent more than what it had estimated (Rs 12 crore) for the project. After the civic body floated a tender in August this year, only one contractor — M/s HMV associates — came forward with a 50 per cent higher cost than the estimate. However, after negotiations, the final cost for the project has been fixed at a 40 per cent hike. The contractor has cited reasons like difficulties in construction in the hilly region and chances of importing sal wood. 

The walkway is expected to be completed within eight months (excluding monsoon) once the construction work starts.