The designs and specifications of the development works to be provided in a colony shall include:—
(a) metalling of roads and paving of footpaths;
(b) turfing and plantation 122[of] trees 5[in] open spaces;
(c) street lighting;
(d) adequate and wholesome water supply;
(e) sewers and drains both for storm and sullage water and necessary provision for their treatment and disposal; and
(f) any other works that the Director may think necessary in the interest of proper development of the colony 123[:]
124[Provided that in case of a low-density eco-friendly colony, installation and development of solar farm, compost plant, sewerage treatment plant and bio-gas plant as per specified norms and specifications at sites approved in the layout plan shall also constitute part of development works.]