St Luċija chapel is located in Tarxien Road on the outskirts of Santa Luċija and close to the borders of Gudja and Għaxaq. It is composed of a single room, late mediaeval chapel with an east-end apse with an altar and a west facing door.

The roof is slightly pitched and the façade consists of a plain square-headed door with a small window on each side. A bell cot stands on the roof directly above the door and is a later addition.

In 1744 the sacristy was built on the northern flank and a cemetery added in front of the parvis. The cemetery was most probably heavily disturbed when the present road was constructed in the 1970s. The apse behind the main altar was walled up in 1839 and this date is incised on the wall.

Of interest are a number of tubular ducts running beneath the chapel to channel rainwater and to act as an air flow to prevent humidity. The chapel has a parvis at the front and has a small landscaped area around it. The chapel has recently undergone 'maintenance' and repairs.

Mepa scheduled St Luċija chapel in Santa Luċija as a Grade 1 national monument as per Government Notice number 628/08 in the Government Gazette dated July 12, 2008.