Updated 2026-04-25 · honest, vendor-neutral comparison
Redfin Estimate is Redfin's free AVM, covering ~75% of US homes (smaller footprint than Zillow). On off-market homes, Redfin's reported MdAE is ~6.7%, slightly better than Zestimate's ~7.5%. Twellie is a paid $50 report with a comparable ~7% MdAE plus photo condition grading, a full negotiation playbook, and the closing-day toolkit Redfin doesn't ship. Use Redfin for the free starting-point AVM and listing search; use Twellie for the report that drives the offer decision.
Redfin Estimate is the highest-accuracy free AVM in the US. Redfin's advantage is direct MLS access — they're a brokerage, not a data-aggregator, so their inputs are first-class.
But Redfin is fundamentally a brokerage tool. The free Estimate is a top-of-funnel product designed to capture leads for Redfin agents. The accuracy is good, the depth is shallow.
Twellie is the inverse: paid, and built for the buyer who wants the analysis without the agent funnel.
| Feature | Redfin Estimate | Twellie |
|---|---|---|
| Coverage | ~75% of US homes (MLS-coverage areas) | ~155M US residential addresses (~95%) |
| Pricing | Free | $50 per address; $199/mo for 6 reports |
| AVM accuracy (off-market) | ~6.7% MdAE | ~7% MdAE |
| AVM accuracy (active listings) | ~2.5% MdAE | Comparable when listing photos available |
| Underlying data | Direct MLS feed (Redfin is a brokerage) | MLS via Apify / Zillow / public records |
| Confidence band shown | Yes (range) | Yes (range + per-model output) |
| Comparable sales shown | Yes (with hover details) | 8 comps with full line-item adjustments |
| Photo condition grading | No (off-market) | Yes (room-by-room AI grading) |
| True cost of ownership | Mortgage estimate only | Full: tax + insurance + maintenance + HOA |
| Risk profile | Climate risk + walkability | FEMA flood + climate + environmental |
| Negotiation strategy | No | Yes (recommended offer + walk-away) |
| Inspection-response generator | No | Yes (AI-drafted credits / repairs) |
| Agent-referral incentive | Yes (Redfin Agents) | None |
| Best for | Free AVM in MLS-covered metros | Offer-stage due diligence anywhere in US |
Redfin Estimate wins on:
Twellie wins on:
The right call: Use Redfin Estimate as a free starting-point sanity check on the AVM number. Pull a Twellie report on the 1–3 properties you're going to offer on, where the depth pays for itself many times over against a $25,000 average commission saved.
Try Twellie
Skip the average $25,270 buyer-agent commission and pocket the difference. $50 per report — yours forever.
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