The Moolasthanam of Pulikkal Shankarodath Kovilakam is situated towards the south of Nalambalam. The present Kovilakam is designed as Thewarakattu, Ettukettu.
The Kovilakam houses an inner Thevarapura as well as the idols of Vasuki, Thakshaka, Eriyarapuram Subramanian and Nagakanyaka, who are worshiped by Thampuratis of the Kovilakam. Sankalpa form of worship is followed for Vellamassery Garuda.
In the inner Thevarapura, Nagendhraswamy (Shankarabharanam), Karinagayakshiamma and Thriprangottappan (the Paradevatha of the Kovilakam), are enshrined. The pujas and rituals in the Thevarapura can be performed only by the Thirumanass, who is ordained as Ambotti Thampuran in a generation. Thirumanass, who is enthroned as Ambotti Thampuran resides in the Kovilakam.
In the western courtyard of Kovilakam, is the sanctum (Srilakam) of Vettakarappan (Kirathamurthy), the nucleus deity of the Kovilakam. The sanctum is eastward facing and Thevaram is also performed for the Thevaramurthys of Shankarodath family (Tirur Narasimhamoorthy, Goshala Krishnan, Navamukundan, Vettath Bhagavathy, Chamravattath Ayyappan, Alathiyur Perumthrikovilappan, Keraladhiswarathappan, Kakkat Ganapati, Mangalath Mahavishnu, Thrikkandiyurappan) who are enshrined in the sanctum of Vettakarappan. Adjacent to this sanctum of Vettakarappan, the ancient Thevaramurthys of Sage Kashyapa, Nagarajaswamy, Nagayakshiamma, Sarpayakshiamma, Nagakanyaka and Naga Chamundi are consecrated facing the east.