Every residential sale closed between April 2025 and March 2026, with computed price-per-square-foot, sale-to-assessment ratios, Zestimate deltas, and anomaly flags — plus deep case studies on DOM manipulation tactics.
The $1M–$2M corridor accounts for 55.5% of volume. Price per square foot is remarkably flat across bands ($501–$590), but smaller homes command premium unit pricing while 7-bed properties show the lowest $/sf ($486) — reflecting diminishing returns above 5 bedrooms. Compass controls 26% of transactions overall and 49% of the $2.5M+ segment.
| Band | Sales | % | Med $/sf | Med Sq Ft |
|---|---|---|---|---|
| Under $1M | 16 | 8.4 | $501 | 1,636 |
| $1M–$1.5M | 55 | 28.8 | $581 | 2,141 |
| $1.5M–$2M | 51 | 26.7 | $563 | 2,998 |
| $2M–$2.5M | 34 | 17.8 | $554 | 4,186 |
| $2.5M–$3M | 21 | 11.0 | $565 | 4,779 |
| $3M+ | 14 | 7.3 | $590 | 6,002 |
| Beds | Sales | Med Price | Med $/sf | Range |
|---|---|---|---|---|
| 2 bed | 6 | $922K | $617 | $650K–$1.07M |
| 3 bed | 53 | $1.23M | $617 | $790K–$2.0M |
| 4 bed | 56 | $1.60M | $532 | $600K–$2.85M |
| 5 bed | 46 | $2.37M | $575 | $1.25M–$4.65M |
| 6 bed | 24 | $2.45M | $536 | $1.43M–$4.2M |
| 7 bed | 6 | $2.27M | $486 | $1.73M–$3.75M |
| Brokerage | Sales | Share | Entry (<$1.5M) | Mid ($1.5–2.5M) | Premium ($2.5M+) |
|---|---|---|---|---|---|
| Compass | 50 | 26.2% | 15 | 18 | 17 |
| BHGRE – The Shanahan Group | 28 | 14.7% | 13 | 12 | 3 |
| Coldwell Banker – Lexington | 15 | 7.9% | 4 | 9 | 2 |
| Keller Williams – Boston NW | 14 | 7.3% | 6 | 7 | 1 |
| Advisors Living – Winchester | 13 | 6.8% | 1 | 7 | 5 |
| Barrett Sotheby's Intl Realty | 8 | 4.2% | 4 | 3 | 1 |
| Gibson Sotheby's Intl Realty | 6 | 3.1% | 2 | 3 | 1 |
| Leading Edge Real Estate | 6 | 3.1% | 5 | 1 | 0 |
| All others (23 firms) | 51 | 26.7% | 21 | 25 | 5 |
MLS PIN (Massachusetts) resets the days-on-market counter after 60 days off-market. Consumer portals show only current-cycle DOM. Zillow's price history is the strongest consumer tool for detecting resets — it preserves every listing event across all MLS numbers, brokerages, and cycles tied to the parcel address.
| Signal | Detection Method | Avg Outcome |
|---|---|---|
| Multiple MLS numbers | 2+ "Listed for sale" events without intervening closed sale | Sold below original ask (all but 1 in sample) |
| Agent/brokerage change | Different broker name between listing cycles | −11.4% from original ask |
| Seasonal withdrawal | Listed spring/summer → withdrawn Oct/Nov → relisted Jan/Feb | 60-day rule exploited for DOM reset |
| 2+ price reductions | Multiple price change events in Zillow history | −12.8% from original ask |
| Tax ratio > 1.5× | Sale price / tax assessment > 1.5 | 17 properties flagged in dataset |
| Metric | Clean (single cycle) | Manipulated (multi-cycle) |
|---|---|---|
| Avg true DOM | 35 days | 163 days |
| Avg reported DOM | 35 days | 42 days |
| Avg price gap from original ask | +2.0% | −10.3% |
| Price reductions | 0 | 2.1 avg |
Reported DOM for manipulated properties averaged 42 days. True DOM averaged 163 days. That 3.7× inflation represents a systematic information asymmetry that disadvantages buyers in every negotiation.
Every sale in ZIP 01890 over the trailing 12 months. Sortable by any column. Flags highlight statistical outliers within each bedroom segment.
| # | Address | Sale Price | Beds | Baths | Sq Ft | $/sf | Broker | Tax Assessed | Sale/Tax | Zestimate | vs Zest | Sale Date | Flags |
|---|
| Finding | n | Confidence | Notes |
|---|---|---|---|
| 37% manipulation rate | 19 | Med | Deep sample by price tier, not random |
| 163-day avg true DOM | 7 | Low–Med | Small sample, directionally reliable |
| 35-day avg clean DOM | 7 | Med | Consistent with market-wide data |
| Compass 26% share | 191 | High | Full dataset |
| $/sf by bed count | 191 | High | Full dataset |
| New construction outperformance | 5 | Low | Directional only |
Sale dates are approximated from Zillow's "daysOnZillow" field (days since sale as of April 6, 2026). Tax assessments and Zestimates are point-in-time values from the Zillow scrape and may differ from current figures. DOM manipulation findings are based on a 20-property deep sample with listing history research via Zillow, Redfin, and brokerage sites.
Sources: Zillow.com property data (scraped April 6, 2026); Zillow and Redfin price histories; MLS PIN DOM policy; Barrett Sotheby's market reports; brokerage websites. This report is for informational purposes only.