Welcome to 30 Columbus St, Waltham—an exceptional new condo conversion offering the perfect single-family alternative. This freestanding detached unit lives much like a single-family home, providing privacy, its own outdoor space, and no shared walls, while being part of a beautifully reimagined 4-unit condominium complex. Completely renovated from top to bottom, this home combines modern design with quality craftsmanship throughout. Offering 5 rooms, 2 bedrooms, and 2.5 baths across two levels, the main level features a stylish galley-style eat-in kitchen, first-floor laundry, and spacious living room. Upstairs offers a private primary suite with walk-in closet, second bedroom, full bath, and flexible office space. Additional features include a private patio, fenced yard, basement storage, and one deeded parking space. Ideally located near Moody Street, Brandeis University, and Routes 95 and 2. A rare opportunity for those seeking the feel and privacy of a single-family home with the convenience of condominium living.
Listed by Richard Carlo · Conway - West Roxbury MLS PIN #73574942 · Updated 10/29/2026, 3:30:00 AM ET
Public Transportation · Shopping · Walk/Jog Trails · Medical Facility
Senior community
No
Management
Developer Control
Development completion
Yes
Owner occupancy source
2
Taxes & property records
Annual property tax
$99
Tax year
2026
Assessed value
$99
Zoning
RES
Registry book
99
Registry page
99
Location & listed schools
City
Waltham
County
Middlesex
State
MA
ZIP code
02451
Listed elementary school
Plympton Elementary School
Listed middle school
John F Kennedy Middle School
Listed high school
Waltham High School
Directions
Main Street to Wellington Street to Columbus Ave
Listing & disclosures
MLS number
73574942
Listing date
2026-09-10
Original entry date
2026-09-10
Status changed
2026-09-10
Listing modified
2026-10-29
Original list price
$739,000
Current list price
$739,000
List price per sqft
$429.15
Days on market
49
Property market time
49
Disclosures
New condominium conversion. Condominium fees are subject to change. Real estate taxes and assessed value have not yet been finalized and will be determined upon reassessment by the municipality. Buyers and their agents are advised to perform their own due diligence.
Disclosure indicator
Y
Lead paint
Unknown
Documents available
Master Deed · Rules & Regs
Price & tax details
Current asking price$739,000
Original asking price$739,000
Listed on2026-09-10
Days on market49
Tax record supplied by MLS
Year
Property tax
Assessed value
2026
$99
$99
These records are supplied by the current listing. Assessed value is not market value; confirm taxes with the local assessor.
Mortgage calculator
Estimate principal and interest using the asking price and your loan assumptions.
Enter an interest rate to calculate. Down payment and term are editable.
Results include principal and interest, plus property tax and HOA when MLS lists them; home and mortgage insurance and utilities are excluded. Tax uses the amount in this listing; a buyer’s actual tax may differ with reassessment or residential exemptions. The rate is your assumption, not a current market quote or loan offer.
SCHOOLS & EDUCATION
Schools & performance
2026 MA DESE
School names, grades and state-reported measures are listed below.
Schools named in the listing
—DESE percentile
MLS-listed elementary
Plympton Elementary School
School name supplied by the listing; confirm with the district.
66DESE percentile
MLS-listed middle
John F Kennedy Middle
Grades 6 · 7 · 8
Progress toward targets 67%
—DESE percentile
MLS-listed high school
Waltham High School
School name supplied by the listing; confirm with the district.
MLS school names do not guarantee attendance. Assignment can vary by school year, grade and admissions policy; confirm with the district before committing.What do these numbers mean?
DESE accountability percentiles (1–99) compare schools administering similar assessments, using up to two years of indicators. These are not test scores out of 100 or GreatSchools 1–10 ratings. Progress toward targets is a separate state measure. Consider programs, support services and your child’s needs as well.
School names link to available school or district websites.