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99 Sumner St # 506, Boston MA 02128

Boston, MA 02128 • East Boston
$850,000
Est. $6,219/month
1
Beds
1
Baths
783
Sq Ft
$1,086
Price/Sq Ft
2020
Year Built
Condominium
Type
25
Days on Market
Active Open House Listed Mar 23, 2026 • MLS# 73490155 Copied!

About this home

Bright, well-appointed 1+ den opportunity with parking at The Mark on East Boston’s waterfront. Elegant & distinctive interior finishes throughout the building & home. Oversized windows flood the open living space with natural light & courtyard/water views. The kitchen features Silestone quartz counter tops, Bosch appliances & an island perfect for entertaining. The Primary bedroom has charming views of courtyard and water, and the versatile den is perfect for a home office/second bedroom. Enjoy ample closet space and storage solutions throughout including a deeded storage unit conveniently located on the same floor. The Mark is a full service building with amenities including: 24/7 concierge, fitness center with flex studio, harbor view resident terrace with grills and fire pits, golf simulator, conference rooms, entertainment suite, and pet spa. Modern community in a prime Eastie location — easy access to dining, transit and waterfront. A turnkey opportunity for seamless city living.

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Public Records

Current Owner

Owner MOK GLORIA S
Mailing Address PO BOX 51602, BOSTON, MA, 02205

Land Use

Use Code 108
Description Multiple Housing
Style High Rise

Tax Information

Assessed Value $70,000
Tax Rate $10.29 per $1,000
Base Tax $720
CPA Surcharge 1% ($0)
Estimated Annual Tax $720

Municipal Context: BOSTON

Median Home Value $745,000
Avg SF Tax Bill $4,523
Residential Tax Rate $10.29/1000
CPA Surcharge 1%
County Suffolk

Property Data Comparison

Discrepancies found between MLS and assessor records.

Field Assessor MLS Match
Year built 2,019 2,020 ✗
Match: address_condo (90.0% confidence) · Data as of Mar 8, 2026

Property Overview

Property Type
Condominium
Listing Type
For Sale
Year Built
2020
Bedrooms
1
Full Bathrooms
1
Living Area
783 sq ft
Total Rooms
5
Stories
1
Entry Level
5

Open House Schedule

19
Apr
Sunday, April 19
11:00 AM - 1:00 PM EDT

Facts & Features

1 Car Garage
Central AC

Home Facts

Type Residential
Style Condominium
Year Built 2020
Living Area 783 sq ft
Bedrooms 1
Full Baths 1
Total Rooms 5

Interior

Heating Forced Air
Cooling Central Air
Flooring None
Appliances None
Fireplace None
Basement N
Laundry None
Features None

Exterior

Construction None
Architecture None
Roof None
Features None
Pool None
Spa None
Fencing None
Patio/Porch None

Parking

Garage Spaces 1
Has Garage Yes
Features Attached, Under, Deeded, Off Street
Total Spaces 1

Utilities

Electric None
Water Public
Sewer Public Sewer
Gas None
Other None

Financial

Annual Tax $9,081
Assessed Value $784,200

Interior Features

Flooring:
Appliances:
Interior Features:
Windows:
Basement: N
Laundry:
Security: Concierge

Construction & Materials

Year Built: 2020
Structure Type: Mid-Rise
Exterior Materials:
Roof:
Foundation:
Stories: 1

Heating, Cooling & Utilities

Heating: Forced Air
Cooling: Central Air
Hot Water:
Water Source: Public
Sewer: Public Sewer
Energy Features:

Exterior & Lot

Exterior Features:
Patio & Porch:
Fencing:
Other Structures:
Lot Features:
Road Surface:

Parking & Garage

Garage Spaces: 1
Garage Type: Attached
Total Parking Spaces: 1
Parking Features: Attached, Under, Deeded, Off Street

Special Features

Waterfront: Yes
Waterfront Type: Waterfront, Harbor
Community Amenities: Public Transportation, Shopping, Park, Walk/Jog Trails, Medical Facility, Laundromat, Bike Path, Highway Access, House of Worship, Private School, Public School, T-Station

Location

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Neighborhood

East Boston

99 Sumner St # 506, Boston MA 02128

Boston, MA 02128

Walkability

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Nearby Schools

E

Elementary Schools

10 schools
East Boston Central Catholic School
0.3 mi
Grades PK-08
B+
Alighieri Dante Montessori School
0.3 mi | #5 of 12 | Score: 45.3
Improved 124 spots from last year
-12.9 below state avg
109 students Diverse
Rising School
Grades PK-06
D
McKay K-8 School
0.4 mi | #332 of 352 | Score: 27.6
Dropped 36 spots from last year
-30.7 below state avg
640 students Less Diverse
Grades PK-08
D
Adams Elementary School
0.5 mi | #767 of 824 | Score: 31.2
Dropped 88 spots from last year
-27 below state avg
237 students Moderate
Grades PK-06
A
Eliot K-8 Innovation School
0.5 mi | #48 of 352 | Score: 57.2
Improved 2 spots from last year
-1.1 below state avg
784 students Diverse
Strong Attendance
Grades PK-08
St. John Elementary School
0.6 mi
Grades PK-08
C-
Kennedy Patrick J Elementary School
0.6 mi | #670 of 824 | Score: 37.5
Improved 47 spots from last year
-20.7 below state avg
279 students Less Diverse
Rising School
Grades PK-06
C+
Mario Umana Academy
0.7 mi | #11 of 16 | Score: 26.9
Improved 333 spots from last year
-31.3 below state avg
634 students Less Diverse
Rising School
Grades PK-08
C+
Otis Elementary School
0.7 mi | #551 of 824 | Score: 42.9
Dropped 160 spots from last year
-15.3 below state avg
408 students Moderate
Grades PK-06
D
O'Donnell Elementary School
0.7 mi | #777 of 824 | Score: 30.7
Dropped 52 spots from last year
-27.5 below state avg
256 students Less Diverse
Grades PK-06
M

Middle Schools

10 schools
Middle School Academy
2.5 mi
F
Higginson/Lewis K-8 School
4.0 mi | #349 of 352 | Score: 23.6
Improved 3 spots from last year
-34.6 below state avg
213 students Diverse
Grades 03-08
A
Uncommon Schools - Roxbury Preparatory Dorchester Campus Middle School
4.3 mi | #4 of 16 | Score: 41.9
Improved 187 spots from last year
-16.3 below state avg
1,126 students Diverse
Rising School College Ready Curriculum
Grades 05-08
Nativity Prep School
4.4 mi
Grades 05-08
Dearborn Middle School
4.6 mi
Mother Caroline Academy
4.7 mi
Grades 05-08
Epiphany School
5.4 mi
Grades 05-08
C
Ohrenberger School
9.2 mi | #265 of 352 | Score: 34.9
Improved 20 spots from last year
-23.3 below state avg
477 students Diverse
Rising School Diverse Student Body
Grades 03-08
Edwards Middle
1.4 mi
UP Academy
2.5 mi
H

High Schools

10 schools
C-
East Boston High School
1.0 mi | #305 of 346 | Score: 37.3
Improved 31 spots from last year
-20.9 below state avg
1,252 students Less Diverse
14 sports • 584 athletes
Early College Program Rising School
Grades 07-12
D
Charlestown High School
1.2 mi | #322 of 346 | Score: 31.0
Improved 49 spots from last year
-27.2 below state avg
754 students Diverse
11 sports • 488 athletes
Early College Program Rising School
Grades 07-12
C
Quincy Upper School
1.8 mi | #268 of 346 | Score: 44.6
Improved 4 spots from last year
-13.6 below state avg
557 students Very Diverse
12 sports • 208 athletes
High Graduation Rate Diverse Student Body
Grades 06-12
Newman School
2.3 mi
Grades 07-12
Cathedral High School
2.3 mi
9 sports • 430 athletes
Grades 07-12
B
Dearborn STEM Academy
3.5 mi | #13 of 25 | Score: 31.7
Improved 356 spots from last year
-26.6 below state avg
565 students Diverse
10 sports • 242 athletes
Early College Program Rising School
Grades 07-12
C
Ruth Batson Academy
3.5 mi | #19 of 25 | Score: 27.6
Improved 346 spots from last year
-30.6 below state avg
604 students Diverse
8 sports • 128 athletes
Early College Program Rising School
Grades 07-12
A-
O'Bryant School of Math & Science
3.5 mi | #90 of 346 | Score: 61.1
Improved 94 spots from last year
+2.9 above state avg
1,509 students Very Diverse
High Graduation Rate Rising School College Ready Curriculum Diverse Student Body
Grades 07-12
A+
Boston Latin School
3.6 mi | #19 of 346 | Score: 73.3
Improved 61 spots from last year
+15.1 above state avg
2,424 students Very Diverse
18 sports • 2,006 athletes
Strong AP Program High Graduation Rate Rising School Strong Athletics
Grades 07-12
A+
Boston Latin Academy
4.2 mi | #2 of 25 | Score: 63.9
Improved 214 spots from last year
+5.7 above state avg
1,693 students Very Diverse
17 sports • 1,298 athletes
High Graduation Rate Rising School Strong Athletics Diverse Student Body
Grades 07-12
Learn about these ratings
School data provided by BMN Schools

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Loan Amount
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Including down payment
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Down: $0
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Monthly Payment Breakdown

Principal & Interest $0
Property Tax $757
Homeowners Insurance $200
HOA Fee $964/mo
PMI (if <20% down) $0

Loan Summary

Total of 360 payments $0
Total principal paid $0
Total interest paid $0

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Payment Over Time

Interest
Principal
Year 1
95% Interest
Year 15
50/50
Year 30
95% Principal
* Estimates only. Actual payments may vary. Consult with a lender for accurate figures.

Property History

Property Timeline

🏠
Listed for Sale
Mar 23, 2026
$850,000
Original listing
Agent: Alexandria Lyons Office: JD Advisors, Inc

Price & Status History

Date Event Price Change
Mar 23, 2026 New Listing Added $850,000 —

Market Statistics

Days on Market
25 days
Price per Sq Ft
$1,086

Tax History

Year Taxes Assessment
2025 $9,081 $784,200

Financial Details

Annual Property Tax
$9,081
Tax Year 2025
HOA Fee
$964
Monthly
Assessed Value
$784,200

Listing Information

Listing Agent Alexandria Lyons
Listing Office JD Advisors, Inc
Agent MLS ID CN215803
Office MLS ID AN8458
Listing Data Updated Mar 30, 2026 12:14 PM EDT
Listing information is deemed reliable but not guaranteed. Data provided by MLS Property Information Network, Inc. All information should be independently verified.

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