Prime Location Meets Contemporary Luxury! This custom-designed duplex offers nearly 1,600 sq ft of sophisticated living across two levels in a welcoming Charlestown neighborhood. The bright open-concept layout features hardwood floors throughout, windows on three sides equipped with custom remote-control shades, and a striking double-sided gas fireplace connecting the foyer to the living area.A chef’s kitchen boasts stainless appliances, granite countertops, wood cabinetry, and a breakfast bar. The spacious primary suite features dual closets and a newly remodeled spa-style bath, complemented by a generous second bedroom and guest half-bath.Additional upgrades include a new furnace and tankless water heater. Enjoy the convenience of private deeded parking, central air, in-unit laundry, and extra storage. Live steps from Whole Foods and Charlestown’s best dining, including Monument Restaurant & Prima, and Warren Tavern. With easy access to parks and transit.
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| Year | Land | Building | Total | Change |
|---|---|---|---|---|
| FY2023 | $0 | $988,700 | $988,700 | — |
| Date | Price | Book/Page |
|---|---|---|
| Apr 29, 2022 | $979,000 | 67563/328 |
| Feb 17, 2022 | $1,510,000 | 67194/342 |
| Oct 21, 2021 | $1,150,000 | 66518/245 |
| Apr 23, 2021 | $855,000 | 65301/146 |
| Aug 21, 2020 | $960,000 | 63607/312 |
| Aug 14, 2020 | $9 | 63572/1 |
| Issued | Type / Work | Status | Value |
|---|---|---|---|
| Oct 6, 2025 |
Electrical Permit
ELECTRICAL
Electrical
Permit #E1782087
|
Open | $1,000 |
| Sep 30, 2025 |
Gas Permit
GAS
Gas
Permit #G1782092
|
Open | $1,000 |
| Sep 15, 2024 |
Gas Permit
GAS
Gas
Permit #G1650430
|
Open | $5,000 |
| Jun 9, 2021 |
Long Form/Alteration Permit
INTREN
Renovations - Interior NSC
Permit #ALT1191492
|
Open | $2,850 |
| Field | Assessor | MLS | Match |
|---|---|---|---|
| Year built | 1,920 | 1,920 | ✓ |
Charlestown
21 Oak St # 1, Boston MA 02129
Boston, MA 02129
| Date | Event | Price | Change | $/sqft | Details |
|---|---|---|---|---|---|
| 05/17/2026 | 📋 Status: Active under contract | - | - | - | Active → Active Under Contract |
| 05/06/2026 | ⏳ Pending Sale | - | - | - | Offer accepted, sale pending |
| 04/18/2026 | ↓ Price Reduced | $1,197,500 | $100,000 | - | From $1,297,500 to $1,197,500 (-7.7%) |
| 03/25/2026 | 🏠 Listed for Sale | $1,297,500 | - | - | Original listing |
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