21 Allen Ave Newton — Photo 1 of 28
$1,399,000
Investment Analysis — 21 Allen Ave
Newton, MA 02468 — Waban
Based on HUD Small Area Fair Market Rent for Boston-Cambridge-Quincy, MA-NH HUD Metro FMR Area, a 4-bedroom in 02468 carries an estimated $4,860/mo in gross rent — about a 2.34% cap rate and $32,713/yr in estimated NOI at the $1,399,000 list price. Adjust every assumption in the calculator below.
Beds
4
Baths
1.5
SqFt
1,936
Style
Single Family
Built
1932
Classic Colonial in desirable Waban, offering timeless character, thoughtful updates, and a private, tree-lined setting. This 4BR, 1.5BA home features beautiful hardwood floors and fresh paint throughout. An elegant fire place living room, formal dining room, an eat-in kitchen with a cozy breakfast nook. Updates over the past 3 years include a new roof, wood-framed windows, cedar shingles, a new deck and new stainless appliances. The walk-up attic with high ceilings offers excellent storage and future expansion potential. The finished basement offers flexible space. One-car garage and freshly paved driveway are accessed via a private abutters-only roadway. An additional lot with mature trees provides exceptional privacy. Conveniently located near parks, shops, restaurants, the Waban T station, and the Zervas Elementary School. Convenient access to major routes. Commuter OH 9/25 Friday 4:30-7pm, Sat and Sun 9/26 & 27 OH 12-2.
ADU Potential
Massachusetts allows one accessory dwelling unit by right in single-family zoning districts statewide (M.G.L. c. 40A §3; 760 CMR 71.00, effective Feb 2025). Estimated maximum ADU size for this property: 900 sq ft (the lesser of 900 sq ft or half the 1,936 sq ft principal dwelling). Lot size: 9,395 sq ft.
Based on listing data, which indicates the property type — not the zoning district. Local dimensional, septic (Title 5), and historic-district requirements still apply. Not legal advice — verify with the municipality.
Estimates — not financial advice
These figures are illustrative estimates for informational purposes only — not an appraisal, valuation, or guarantee of rent, income, or returns, and not financial, tax, or investment advice. Rent is either the figure reported on the MLS listing — in-place rent that may differ from market and is not verified against the actual leases — or, where the listing reports none, an estimate from HUD Small Area Fair Market Rents, a government benchmark that may differ from actual market rent. Each figure is labelled with its source. Cap rate, NOI, and returns depend on the assumptions shown, which you can change. MLS and other third-party data may be inaccurate or out of date. Verify all figures independently and consult your own financial, tax, and legal advisors before making any investment decision.
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Property Details
Financials
Parking
Interior Specifications
Climate & Utilities
Building & Exterior
Property & Lot
Amenities & Appliances
Gas Water Heater • Range • Dishwasher • Disposal • Microwave • Refrigerator
Neighborhood
Public Transportation • Shopping • Tennis Court(s) • Park • Walk/Jog Trails • Conservation Area
Geography
Floorplan Breakdown
Structural Layout
Living Room
Lvl Main,First12 x 21
Flooring - Hardwood, French Doors, Open Floorplan, Crown Molding
Dining Room
Lvl Main,First12 x 12
Flooring - Hardwood, French Doors, Wainscoting, Lighting - Overhead, Crown Molding
Kitchen
Lvl First11 x 8
Flooring - Vinyl, Dining Area, Countertops - Stone/Granite/Solid, Breakfast Bar / Nook, Recessed Lighting, Stainless Steel Appliances, Gas Stove, Lighting - Overhead
Family Room
Lvl Basement18 x 15
Flooring - Vinyl, Lighting - Overhead
Primary Bedroom
Lvl Second12 x 14
Closet, Flooring - Hardwood, Flooring - Wall to Wall Carpet, Lighting - Overhead
Bedroom 2
Lvl Second11 x 10
Bedroom 3
Lvl Second11 x 9
Closet, Flooring - Hardwood, Flooring - Wall to Wall Carpet, Lighting - Overhead
Bedroom 4
Lvl Second15 x 7
Walk-In Closet(s), Flooring - Hardwood, Lighting - Overhead
Bathroom 1
Lvl Second9 x 8
Bathroom - Full, Bathroom - Tiled With Tub & Shower, Closet - Linen, Flooring - Stone/Ceramic Tile, Lighting - Overhead
Bathroom 2
Lvl First3 x 5
Bathroom - Half, Flooring - Vinyl, Lighting - Overhead
Listing Agent: Carol Henriquez
Listing Office: Coldwell Banker Realty - Cambridge
MLS® Number: 73582016
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