Calculate your LSA return on ad spend (ROAS) by dividing the revenue generated from LSA leads by your total LSA ad spend.
For example, if you spend $2,000 on LSA and those leads generate $8,000 in revenue, your ROAS is 4x.
To get a more useful number, track the full customer journey: LSA lead... qualified lead.... booked job...closed sale... revenue. This helps you separate leads that look good in the LSA dashboard from leads that actually make you money.
Also factor in your average job value, gross profit, lead-to-customer conversion rate, and agency management fees if applicable. A high lead volume does not necessarily mean a strong ROAS if those leads rarely turn into paying customers.