Ownership intelligence

Who controls the opportunity?

Owner of record from public deeds, plus portfolio, hold profile and investor signals where the data supports them. Included with a plan.

Owner contacts

Can we reach the decision maker?

Skip-traced phones and e-mails of the owner. Included with a plan.

Debts

What is owed, to whom, and when it comes due

Recorded lenders, amounts and estimated maturities of the owner's loan book — included with a plan.

Property tax · 2018

What does the county charge?

$4k

Tax billed · 2018

Assessed value · 2024$469k

Assessed land$126k

Assessed improvement$343k

Effective rate0.91%

Value estimate

· Oct 2026

$280k

$252k – $308k

Realmo valuation models over county records and 12 qualifying comparable sales.

Recently sold

What actually traded nearby?

$3,725/SF

ZIP average, outlier-cleaned · 21 recorded sales of this use type

Observed band · Q1–Q3$189 – $7,097

Qualifying comparables12

Cap rate analysis

How does the asset earn?

No income signal is modeled for this parcel yet — the Cap Rates tab runs the workflow.

Zoning insight

What can be built here?

JurisdictionBOSTON

Location intelligence

Which uses thrive at this corner?

Best fit: Law Firm

Demand heat for this use is drawn on the map · LocInt grid

Demand index

Law Firm67.0

Realty agency42.6

Dental Office26.0

21 Creston St Dorchester, MA 02121-2038

County assessor Recorded deeds · not on file 12 qualifying comp sales Zoning catalog

Every figure names its source: public record, benchmark, or modeled. Coverage varies by property — thin data is stated as missing, never invented.

Comparables

6 recorded sales · 6 properties nearby

Address Sale price Sold Size

107-111 Erie, Dorchester, MA 02121 $1,777,777 Jan 2025 5,222 SF

56 Brunswick, Dorchester, MA 02121-1857 $77,500,000 Jun 2024 4,824 SF

208 Harold, Dorchester, MA 02121-1427 $1,195,000 Oct 2021 4,350 SF

336-336B Blue Hl, Dorchester, MA 02121 $50,000 Sep 2021 4,680 SF

383-385 Blue Hl, Dorchester, MA 02121 $862,500 Aug 2020 4,617 SF

324-324A Blue Hl, Dorchester, MA 02121 $462,000 Mar 2019 4,603 SF

Sale prices and dates as our records hold them, one row per building. A deed can cover more of a building than the size shown, so read the price against the size rather than dividing one by the other.

Comparable nearby

Value Estimation
$740,000

4,764 SF

374-374A Blue Hl Ave

OFFICE/RESIDENTIAL (MIXED USE)

374-374A Blue Hl Ave, Dorchester, MA 02121

View Details
Value Estimation
$800,000

5,162 SF

322-322A Blue Hl Ave

OFFICE/RESIDENTIAL (MIXED USE)

322-322A Blue Hl Ave, Dorchester, MA 02121

View Details
Value Estimation
$840,000

5,304 SF

345-345A Washington St

OFFICE/RESIDENTIAL (MIXED USE)

345-345A Washington St, Dorchester, MA 02121

View Details
Value Estimation
$695,000

4,416 SF

367-369 Blue Hl Ave

OFFICE/RESIDENTIAL (MIXED USE)

367-369 Blue Hl Ave, Dorchester, MA 02121

View Details
Value Estimation
$660,000

3,600 SF

20 Bowdoin Ave

OFFICE/RESIDENTIAL (MIXED USE)

20 Bowdoin Ave, Dorchester, MA 02121-3930

View Details
Value Estimation
$555,000

3,384 SF

55 Glenway St

OFFICE/RESIDENTIAL (MIXED USE)

55 Glenway St, Dorchester, MA 02121-4036

View Details

Research This Page with AI

Rey answers here. ChatGPT, Grok and Claude get the same data packet.

Includes: Price & PSF · Cap rate · Location · Zoning

Ask Rey → ChatGPT Grok Claude

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21 Creston St Dorchester, MA 02121