81 South St
+12.5%vs the Waltham ZIP median sale $/ft² ($474)
Sales Performance
3 arms-length sales on record for this building.
Unit Mix & Floor PlansThe building's recurring floor plans, found by grouping units with identical beds, baths and square footage in county records. Larger groups are the building's standard layouts; leftover units have one-off sizes.
Ownership & Financing
Recent SalesThe latest recorded arms-length sales in the building, newest first.
Values are TopHap estimates, not appraisals. Sales, ownership and tax figures come from recorded county documents via ATTOM and can lag by several weeks.
Property Facts
Assigned SchoolsThe public schools this address is zoned for. Boundaries change, so confirm with the district before you count on it.
District: Waltham School District
Neighborhood · ZIP 02453These are comparison scores, not percentages. 100 equals the national average, so 150 means about 50% above average.
Index scale: 100 = US average (tick). Lower is better.
All UnitsEvery property record the county has at this street address, such as the units in a condo building. Prices shown are our estimates, not asking prices.
Data by ATTOM. Valuations are automated estimates, not appraisals. Photos from Google Street View and may not depict the current property state.
About 81 South St
How many units are in 81 South St, Waltham, MA?
81 South St, Waltham, MA has 2 residential units across built in 2005, according to county assessor records.
What is a unit at 81 South St, Waltham, MA worth?
The median TopHap Estimate across the 2 units at 81 South St, Waltham, MA is $680,411. That works out to $533 per square foot. Units run from 1,276 to 1,276 square feet. Estimates are modelled from recorded sales and assessments, not appraisals.
Is 81 South St, Waltham, MA expensive for Waltham?
Units at 81 South St, Waltham, MA carry a median of $533 per square foot, 12% above the Waltham median of $474 per square foot.
How often do units sell at 81 South St, Waltham, MA?
0 units at 81 South St, Waltham, MA sold in the last 12 months, out of 3 recorded arms-length sales all time. That is a turnover rate of 0.0% of the building per year.
What floor plans does 81 South St, Waltham, MA have?
The most common plan at 81 South St, Waltham, MA is a 2-bedroom of 1,276 square feet, repeated 2 times, with a median estimate of $680,411. TopHap identifies 1 recurring plans in the building.
More homes on South St
- 713 South St$834K3 bd · 1.5 ba · 1,440 ft² · Sold $830K · Jun 2026
- 707 South St$816K3 bd · 2.5 ba · 1,483 ft² · Sold $810K · May 2026
- 54 South St # 564 bd · 4 ba · 3,392 ft² · Sold $1.6M · Apr 2026
- 84 South St # 3$414K1 bd · 1 ba · 856 ft² · Sold $408K · Sep 2025
- 73 South St # 1$987K3 bd · 3.5 ba · 2,720 ft² · Sold $970K · Aug 2025
- 218 South St # 3$806K2 bd · 2.5 ba · 1,440 ft² · Sold $805K · Aug 2024
- 701 South St$900K3 bd · 1 ba · 1,372 ft² · Sold $865K · Jul 2024
- 685 South St$820K3 bd · 1.5 ba · 1,260 ft² · Sold $800K · Jun 2024
- 75 South St # 1$964K3 bd · 3.5 ba · 2,584 ft² · Sold $926K · May 2024
- 43 South St4 bd · 3 ba · 2,152 ft² · Sold Jan 2023
- 679 South St$869K3 bd · 1.5 ba · 1,975 ft² · Sold $1.4M · Dec 2022
- 218 South St # 182 bd · 2.5 ba · 1,440 ft² · Sold $707K · Nov 2022
Closest homes
- 85 South St$650K0 ft · 2 bd · 1.5 ba · 1,276 ft² · Sold $420K · Jun 2006
- 85 South St$675K0 ft · 2 bd · 1.5 ba · 1,276 ft² · Sold $550K · Jul 2018
- 89 South St$650K0 ft · 2 bd · 1.5 ba · 1,276 ft² · Sold $560K · Feb 2019
- 81 South St$685K0 ft · 2 bd · 1.5 ba · 1,276 ft² · Sold $290K · Nov 2014
- 89 South St$666K0 ft · 2 bd · 1.5 ba · 1,276 ft² · Sold $572K · Oct 2019
- 91 South St # 9390 ft · 6 bd · 6 ba · 3,364 ft² · Sold Aug 1981
- 71 South St$989K121 ft · 3 bd · 3.5 ba · 2,590 ft² · Sold $725K · Mar 2020
- 75 South St$949K121 ft · 3 bd · 3.5 ba · 2,560 ft² · Sold $705K · Jun 2018
More homes in Waltham 02453
- 17 Washington Ave$870K3 bd · 2 ba · 1,847 ft² · Sold $870K · Aug 2026
- 95 Central St8 bd · 2.5 ba · 2,245 ft² · Sold $649K · Aug 2026
- 79 Cedarwood Ave$920K3 bd · 1.5 ba · 1,536 ft² · Sold $920K · Aug 2026
- 61 Parmenter Rd$820K3 bd · 2.5 ba · 1,730 ft² · Sold $820K · Aug 2026
- 36 Prospect St$720K2 bd · 1.5 ba · 1,168 ft² · Sold $720K · Aug 2026
- 111 Warren St$790K2 bd · 2.5 ba · 1,344 ft² · Sold $790K · Aug 2026
- 6 Virginia Rd$838K4 bd · 1 ba · 1,778 ft² · Sold $838K · Aug 2026
- 74 Rose Hill Way$1.1M3 bd · 2.5 ba · 1,868 ft² · Sold $1.1M · Aug 2026
- 68 Adams St4 bd · 2.5 ba · 2,536 ft² · Sold $1.1M · Jul 2026
- 17 Ash St9 bd · 4.5 ba · 4,609 ft² · Sold $2.3M · Jul 2026
- 79 Cherry St6 bd · 4.5 ba · 2,738 ft² · Sold $1.3M · Jul 2026
- 14 Kenmore Rd$601K3 bd · 1 ba · 1,188 ft² · Sold $600K · Jul 2026
Assigned schools
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