3. The following are specified as permissible purposes or objects additional to those specified in subsection (4) of section 2 (eligibility for registration of social landlords)—
(a)disposing of houses by way of sale at less than the market value to residents of the social landlord;
(b)acquiring, or constructing, or repairing and improving, or creating by the conversion of houses or other property, houses to be disposed of pursuant to equity percentage arrangements;
(c)enabling or assisting any residents of the social landlord—
(i)to acquire, or to acquire and enter into occupation of, houses, or
(ii)to procure the construction of separate dwellings for occupation by those residents (whether alone or with other persons), or to procure such construction and enter into occupation of the dwellings so constructed, by—
(aa)providing grants to or for such residents, or
(bb)in a case falling within sub-paragraph (i) above, by entering into assured percentage arrangements with such residents (or partly in the one way and partly in the other).