Garudapurana 1.46.1

1.46.1

śrīgaruḍamahāpurāṇam- 46
hariruvāca /
vāstuṃ saṃkṣepato vakṣye gṛhādau vighnanāśanam /
īsānakoṇādārabhya hyekāśītipade yajet //

The glorious Garuḍa Mahāpurāṇa—[Chapter] 46.
Hari said:
I shall briefly explain the site-plan, which removes obstacles in a house and other [structures].
Beginning from the northeast corner, one should worship upon eighty-one squares.