Sir,
Sl. No 12 of Notification No. 25/2012-ST dated 20.6.2012 as amended exempts services provided to the Government, a local authority or a governmental authority by way of construction, erection, commissioning, installation, completion, fitting out, repair, maintenance, renovation, or alteration of (i) a historical monument, archaeological site or remains of national importance, archaeological excavation, or antiquity specified under the Ancient Monuments and Archaeological Sites and Remains Act, 1958 (24 of 1958), (ii) canal, dam or other irrigation works and (iii) pipeline, conduit or plant for (i) water supply (ii) water treatment, or (iii) sewerage treatment or disposal. This Sl. No. does not stipulate a condition regarding entrance of an agreement prior to 1st March 2015.
Sl. No. 12A of Notification No. 25/2012-ST dated 20.6.2012 as amended exempts services provided to the Government, a local authority or a governmental authority by way of construction, erection, commissioning, installation, completion, fitting out, repair, maintenance, renovation, or alteration of (i) a civil structure or any other original works meant predominantly for use other than for commerce, industry, or any other business or profession (ii) a structure meant predominantly for use as (i) an educational, (ii) a clinical, or(iii) an art or cultural establishment and (iii) a residential complex predominantly meant for self-use or the use of their employees or other persons specified in the Explanation 1 to clause (44) of section 65 B of the said Act.
For the purpose of Sl. No. 12A the notification stipulates a condition that a contract which had been entered into prior to the 1st March, 2015 and on which appropriate stamp duty, where applicable, had been paid prior to such date. since in your case date of entering into contract is not disclosed. You have stated that order is received on 26.03.2015. If the order itself is treated as agreement then you are not eligible to avail the exemption. If the agreement entered into is on different date then you may be eligible to avail the exemption.