3 Erie Ave, Brockton, MA 02302
A real address, analyzed in full so you can judge the output before you trust it with your own offers. Two-family, 4 bd / 2 ba, 2,361 sq ft on a quiet dead-end street. The sample listing: $649,000 asking, renovated in 2020 but showing years of tenant wear, both units needing paint, flooring, and kitchen and bath updates. Unit 1 rents for $1,800; unit 2 vacant.
The 5-minute version, exactly as you'll see it
This is a real, unedited screenshot of the free browser analyzer running this listing. Working from the listing text alone, it projects ~$55k of profit at asking - with 70% confidence and four open risk flags telling you not to stop here. Keep reading to see how the researched numbers change the answer.

1 · What is it worth?
The quick estimate's starting ARV ($876k) comes from listing keywords. Research replaces it with evidence:
The keyword ARV overshot Zillow's valuation by roughly $135,000 - a correction big enough to flip the whole deal, which is the point of researching before you offer. In the full workspace, the Web CMA researches sold two-family comps around the subject and attaches sources and tax records, so the ARV is an argument you can audit.
2 · What will the rehab cost?
This is a cosmetic turnover, not a gut: the 2020 renovation updated systems, kitchens, and baths, so the scope is refreshing two tenant-worn units. In the product this list is drafted from your walkthrough photos and priced line by line.
3 · What can you pay?
The full cost stack confirms it. Assumptions: 6 months of financing and holding costs on a two-family (~$34,000), buying costs (~$9,000), and selling costs at ~5% of ARV (~$38,000):
4 · What the correction teaches
- The quick screen said yes; the research said no. At asking, the keyword ARV shows +$55k while the Zestimate-anchored ARV shows −$25k. An ARV is only as good as its evidence.
- The 70% rule is brutal on thin spreads. Even with the property worth more than asking as-is, a flip needs the purchase far below value to survive holding, selling, and surprises. Flip-safe here is ~$477k against a $649k ask.
- A two-family has a second answer. With unit rents around $1,800, buying near asking could still work as a BRRRR or house-hack where the flip math fails - a different analysis the same workspace runs from the same record.
Verdict the report supports: as a flip, do not offer near asking - the deal breaks even around $624,000 and only gets safe well below that. As a rental play, run the BRRRR numbers before walking away.
What the full report adds
Inside a free workspace, this same analysis includes the sold comps it used, clickable source links, tax and assessor records, and stays editable - so the numbers improve after your walkthrough, contractor quote, and lender term sheet. Every AI figure is a draft until you accept it. Here is the comps view from a real workspace project:

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