16015 Mark Dr, Brookfield, WI Under Contract $750,000 - listed by Katherine Sprague — Under Contract $750,000

Katherine Sprague listing agent for 553 N 60th St, Milwaukee, WI - sold for $470,000 — Sold $470,000

1065 Lower Ridgeway, Elm Grove, WI For Sale $939,900 - listed by Katherine Sprague — For Sale $939,900

Katherine Sprague buyer's agent for 6232 Washington Cir, Milwaukee, WI - sold for $1,450,000 — Sold $1,450,000

158 N 92nd St, Milwaukee, WI For Sale $324,900 - listed by Katherine Sprague — For Sale $324,900

Katherine Sprague listing agent for 14285 W North Oak Blvd, New Berlin, WI - sold for $593,000 — Sold $593,000

Katherine Sprague

Wauwatosa WI

Firefly Real Estate, LLC

152 Closed Sales

$81.4M Total Value

$285K - $1.5M Price Range

$535.7K Average Price

Prior 5 years

About Katherine

Home Types: Condo, Multifamily, House, Lot/Land, Other

Years of Experience: 14

Transaction History

1 Year
2 Year
5 Year

Seller Deals
Total Deals	32
Total Value	$15,355,950
Average Sale Price	$479,873
Price Range	$190K - $1.1M

Buyer Deals
Total Deals	9
Total Value	$6,944,900
Average Sale Price	$771,656
Price Range	$295K - $1.5M

1 Year View by Quarter

Seller Deals
Total Deals	51
Total Value	$26,317,367
Average Sale Price	$516,027
Price Range	$190K - $1.1M

Buyer Deals
Total Deals	13
Total Value	$9,822,900
Average Sale Price	$755,608
Price Range	$290K - $1.5M

2 Year View by Quarter

Seller Deals
Total Deals	124
Total Value	$62,788,577
Average Sale Price	$506,359
Price Range	$190K - $1.5M

Buyer Deals
Total Deals	28
Total Value	$18,631,300
Average Sale Price	$665,404
Price Range	$150K - $1.5M

5 Year View

Neighborhoods Katherine is Experienced In

Katherine's Listings and Deals

Katherine's Active Listings

$939,900
- 4 Beds
- 3.5 Baths
- 2,723 Sq Ft
1065 Lower Ridgeway

Elm Grove, WI
Summer 2026 Updates Per Seller Include: new roof with 15 year transferrable warranty, updated private well to current codes/standards, upstairs wood floors refinished (all 3 bedrooms and upstairs landing). Lovingly cared for by owner for over 50 years. Entry hall welcomes you to foyer, w/ arched doorways & classic center staircase. Crown molding, wide plank wood floors & intricate millwork. LR

Katherine Sprague Firefly Real Estate, LLC

$324,900
- 4 Beds
- 2 Baths
- 1,343 Sq Ft
158 N 92nd St

Milwaukee, WI
Outstanding opportunity for owner-occupants or investors in a convenient Milwaukee location near MCW, shopping, dining, and freeway access! Move-in ready or ideal as a turnkey short-term rental, with all furniture/decor included if desired. Bright living room, updated kitchen with stainless steel appliances and ample storage, plus 2 bedrooms and full bathroom on the main level. Spacious

Katherine Sprague Firefly Real Estate, LLC

$750,000

Under Contract
- 4 Beds
- 2.5 Baths
- 4,114 Sq Ft
16015 Mark Dr

Brookfield, WI
First time offered since built in 1976, this meticulously maintained Brookfield Colonial has been lovingly cared for by its original owner for 50 years. Located in sought-after Willaura West on a picturesque .53-acre lot (per city record), this home offers timeless craftsmanship and generous living space. Features include 4 BRs, 2.5 BAs, and a 3-car attached garage. Formal LR and DR, paneled FR

Katherine Sprague Firefly Real Estate, LLC

Recently Sold

$470,000

Sold Aug 20, 2026
- 4 Beds
- 2 Baths
- 1,582 Sq Ft
553 N 60th St

Milwaukee, WI
- 9% Above List
- 2 Days On Market
- $297/SF
- Current Est. Value $414K
Katherine Sprague Firefly Real Estate, LLC

$899,900

Sold Aug 14, 2026
- 5 Beds
- 2.5 Baths
- 3,663 Sq Ft
12500 Stephen Place

Elm Grove, WI
- 2 Days On Market
- $246/SF
- Current Est. Value $897K
Katherine Sprague Firefly Real Estate, LLC

$593,000

Sold Jul 24, 2026
- 3 Beds
- 4 Baths
- 3,052 Sq Ft
14285 W North Oak Blvd

New Berlin, WI
- 6% Above List
- 2 Days On Market
- $194/SF
- Current Est. Value $587K
Katherine Sprague Firefly Real Estate, LLC

$680,000

Sold Jul 17, 2026
- 4 Beds
- 2.5 Baths
- 2,149 Sq Ft
2608 N 71st St

Milwaukee, WI
- 13% Above List
- 4 Days On Market
- $316/SF
- Current Est. Value $591K
Katherine Sprague Firefly Real Estate, LLC

$390,000

Sold Jul 10, 2026
- 3 Beds
- 1.5 Baths
- 1,543 Sq Ft
8138 Gridley Ave

Milwaukee, WI
- 6 Days On Market
- $253/SF
- Current Est. Value $447K
Katherine Sprague Firefly Real Estate, LLC

$355,000

Sold Jun 2, 2026
- 3 Beds
- 1 Bath
- 1,374 Sq Ft
321 N 74th St

Milwaukee, WI
- 18% Above List
- 2 Days On Market
- $258/SF
- Current Est. Value $311K
Katherine Sprague Firefly Real Estate, LLC

$850,000

Sold Jun 1, 2026
- 3 Beds
- 2.5 Baths
- 2,292 Sq Ft
2162 N 74th St

Milwaukee, WI
- 6% Above List
- 4 Days On Market
- $371/SF
- Current Est. Value $799K
Katherine Sprague Firefly Real Estate, LLC

$600,000

Sold May 22, 2026
- 3 Beds
- 1.5 Baths
- 1,960 Sq Ft
2536 N 88th St

Milwaukee, WI
- 7% Above List
- 4 Days On Market
- $306/SF
- Current Est. Value $589K
Katherine Sprague Firefly Real Estate, LLC

$415,000

Sold May 21, 2026
- 4 Beds
- 1.5 Baths
- 1,697 Sq Ft
7926 W Wright St

Milwaukee, WI
- 15% Above List
- 1 Day On Market
- $245/SF
- Current Est. Value $400K
Katherine Sprague Firefly Real Estate, LLC

Katherine Sprague

(414) 250-0584

Firefly Real Estate, LLC

(414) 250-0584

Homes for Sale by City

Katherine Sprague

About Katherine

Transaction History

Seller Deals

Buyer Deals

Production Over Time

1 Year View by Quarter

Seller Deals

Buyer Deals

Production Over Time

2 Year View by Quarter

Seller Deals

Buyer Deals

Production Over Time

5 Year View

Neighborhoods Katherine is Experienced In

Katherine's Listings and Deals

Katherine's Active Listings

Recently Sold