Deemed deduction for land in construction services applies when transaction includes land value, absent if land not transferred. Construction services for buildings and complexes intended for sale are taxable under the notified construction services entry. If the transaction value includes transfer of land or undivided share, a deemed deduction for land (one third of the value) is allowed irrespective of the actual land value, but only when there is an actual transfer; no deduction applies where land or undivided share is not transferred. Joint venture projects between developers and landowners qualify for the deemed deduction, but units transferred by the developer to the landowner do not.