Pull sold comps (last 3–6 mo, same area, similar sqft/beds/baths) from Redfin or Zillow "recently sold". Ignore the Zestimate. Later: PropStream comps or MLS via a licensed partner.
Ask condition (roof/HVAC/systems age; "light freshen, moderate, or full gut?"), apply the $/sqft band above, and get photos or a video walkthrough texted to you. Pad it — you can't see it. On live deals, let the end buyer verify during the inspection period.
Two-touch: on the call qualify + get their number + request photos; then pull comps (5–10 min) and present the offer. Only quote a range live if it's hot.
contracts/ and require attorney review before use. Playbook + scenario deep-dives: docs/seller-negotiation-playbook.md.