
12 SUMNER Crescent
Grimsby, Ontario
3 bed • 3 bath • Single Family
Set on a quiet crescent just steps from the lake, this Grimsby home offers the peaceful and established lifestyle buyers are searching for. Inside, over 2,300 sq. ft of well-designed living space delivers both comfort and versatility. The main floor welcomes you with a grand, airy entrance and soaring ceilings. At the heart of the home, a spacious kitchen with large island and breakfast bar overlooking the family room with gas fireplace and walkout to the bonus sunroom, creating the perfect backdrop for summer dinners, morning coffee, or a cozy reading retreat overlooking the rear yard. A separate open concept living and dining area provides space for entertaining, celebrations, or quiet evenings in. Also included on this level is main floor laundry, inside entry to garage, and guest half bath. Upstairs, a thoughtfully laid out upper level offers three generously sized bedrooms, including a private primary retreat overlooking the backyard, complete with a walk-in closet and a spacious 5 piece ensuite with separate shower and soaker tub. Two additional bedrooms share a large main bath, with ample storage throughout. The lower level is a blank canvas, with excellent potential for a recreation room, home gym, office, or additional living space. With thoughtful updates and worry-free maintenance already completed, including full interior painting (2026), heat pump (2023), washer and dryer (2020), and shingles (2019), this is a move-in-ready opportunity to enjoy a refined home in an exceptional lakeside neighbourhood. Located in one of Grimsby’s most sought-after neighbourhoods, you’re a short walk to Lake Ontario, waterfront parks, and scenic trails, while still enjoying quick access to the QEW for an easy commute to Niagara or the GTA. It’s a setting that perfectly blends nature, convenience, and community.
Price History
Property
- Lot Size
- 0.15 acres
Schools
Elementary
- Nelles Public School1.1 km
Public · DSB Niagara · 290 students
Grade 3 reading: 100% met the provincial standard · Grade 6 math: 85% met the provincial standard
- St Joseph Catholic Elementary School1.2 km
Catholic · Niagara CDSB · 225 students
Grade 3 reading: 79% met the provincial standard · Grade 6 math: 56% met the provincial standard
- Park Public School1.3 km
Public · DSB Niagara · 110 students
Grade 3 reading: 100% met the provincial standard · Grade 6 math: 75% met the provincial standard
Secondary
- West Niagara Secondary School2.8 km
Public · DSB Niagara · 1655 students
Grade 10 literacy: 88% met the provincial standard
- Blessed Trinity Catholic Secondary School3 km
Catholic · Niagara CDSB · 1085 students
Grade 10 literacy: 94% met the provincial standard
Straight-line distance. Nearby schools are not necessarily the assigned schools — confirm catchment with the school board. Scores are EQAO provincial test results for 2024-2025.
Community
Postal area L3M
- Population
- 28,433
- Private dwellings
- 11,465
- Median age
- 44.8
- Average household size
- 2.5
- Median household income
- $104,000
Source: Statistics Canada, 2021 Census of Population, catalogue 98-401-X2021013. Adapted from Statistics Canada. This does not constitute an endorsement by Statistics Canada of this product.
Local market
Single Family in Grimsby · last 12 months
- Median sold price
- $715,000
- Homes sold
- 379
- Median days on market
- 27
- Sale-to-list price
- 96.7%
Based on 379 recorded sales of single family properties in Grimsby over the last 12 months.
Location
Mortgage Calculator
$189,800
Estimated Monthly Payment
$4,662
Investment Analysis
No recent nearby lease data. Enter a rent to see the numbers.
Mortgage: $4,662/mo (20% down, 5.5%)
Taxes: $0/mo · Insurance: $237/mo
Estimates only. Consult a financial advisor.
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