Keith Jefferson Real Estate Agent - Signature Premier Properties

107 Constable Dr, Riverhead, NY Pending $599,990 - listed by Keith Jefferson — Pending $599,990

Keith Jefferson listing and buyer's agent for 914 Osborn Ave, Riverhead, NY - sold for $375,000 — Sold $375,000

427 Doctors Path, Riverhead, NY For Sale $399,990 - listed by Keith Jefferson — For Sale $399,990

Keith Jefferson buyer's agent for 20 Dogwood Ln, Manorville, NY - sold for $243,000 — Sold $243,000

842 Osborn Ave, Riverhead, NY Pending $369,990 - listed by Keith Jefferson — Pending $369,990

Keith Jefferson

Ronkonkoma NY

Signature Premier Properties

68 Closed Sales

$30.6M Total Value

$310K - $775K Price Range

$449.5K Average Price

Prior 5 years

About Keith

When you work with Keith Jefferson, you tap into the collective experience of the best, most experienced Realtors on Long Island. Contact him today to discuss how Signature Premier Properties and he can help you market and sell your property successfully or find your perfect home

Home Types: House, Condo, Co-op, Townhouse, Mobile Homes, Commercial

Years of Experience: 39

Transaction History

1 Year
2 Year
5 Year

Seller Deals
Total Deals	13
Total Value	$5,689,500
Average Sale Price	$437,654
Price Range	$155K - $675K

1 Year View by Quarter

Seller Deals
Total Deals	27
Total Value	$12,891,000
Average Sale Price	$477,444
Price Range	$155K - $775K

Buyer Deals
Total Deals	1
Total Value	$243,000
Average Sale Price	$243,000

2 Year View by Quarter

Seller Deals
Total Deals	61
Total Value	$28,082,461
Average Sale Price	$460,368
Price Range	$124K - $775K

Buyer Deals
Total Deals	7
Total Value	$2,485,400
Average Sale Price	$355,057
Price Range	$170K - $575K

5 Year View

Neighborhoods Keith is Experienced In

Corona

1 Sale

Keith's Listings and Deals

Keith's Active Listings

$399,990
- 3 Beds
- 1 Bath
- 778 Sq Ft
427 Doctors Path

Riverhead, NY
Investors Delight 3 Br Ranch features Corner Lot, Low taxes Needs TLC Vinyl Siding Newer Roof (6 Years), Gas Heat, 8 years young boiler. Close to schools & Shopping!

Keith Jefferson Signature Premier Properties

$599,990

Pending
- 3 Beds
- 2 Baths
- 1,371 Sq Ft
107 Constable Dr

Riverhead, NY
Sprawling 3 Bd Ranch Features All Wood Floors, 2 Full Baths, Master Suite, Full Bsmt,, 1-Car Garage, Trex Deck, FencedProperty, Low taxes, Formal Dining Room, Close to Schools & Shopping! Friendly Neighborhood!

Keith Jefferson Signature Premier Properties

$369,990

Pending
- 3 Beds
- 1 Bath
- 1,224 Sq Ft
842 Osborn Ave

Riverhead, NY
Investors Delight 3Br, 1 Bth, full Bsmt Colonial, Needs TLC. Features 10 year old roof, Vinyl siding, Spacious fenced in backyard.Close to schools & shopping, low taxes!

Keith Jefferson Signature Premier Properties

$399,990

Pending
- 3 Beds
- 1 Bath
- 792 Sq Ft
17 Brown St

Riverhead, NY
Cozy 3Bd Ranch Features Hardwoof floors 3 year young boiler, 10-15 Year old roof, full Basement, Detached 1 Car Garage, Low Taxes, Fenced Property, Close to school & Park

Keith Jefferson Signature Premier Properties

$649,990

Pending
- 5 Beds
- 2 Baths
- 1,795 Sq Ft
112 Priscilla Ave

Riverhead, NY
Spacious 5 Br Ranch Features Newer Roof, 10 year Young Windows 2 Full Bath 10 Rooms Large Family Dream, Laundry Room with Pantry Low Taxes fenced .78 Acre with tons of privacy & potential 2 car detached garage parking galore. Close to All.

Keith Jefferson Signature Premier Properties

$199,999

Pending
- 2 Beds
- 1.5 Baths
- 1,093 Sq Ft
364 Hamilton Ave

Riverhead, NY
.

Keith Jefferson Signature Premier Properties

Recently Sold

$375,000

Sold Jul 24, 2026
- 3 Beds
- 1 Bath
- 1,400 Sq Ft
914 Osborn Ave

Riverhead, NY
- 6% Below List
- 20 Days On Market
- $268/SF
- Current Est. Value $410K
Keith Jefferson Signature Premier Properties

$460,000

Sold Jun 16, 2026
- 3 Beds
- 1 Bath
- 700 Sq Ft
257 Flanders Rd

Riverhead, NY
- 8% Below List
- 52 Days On Market
- $657/SF
- Current Est. Value $464K
Keith Jefferson Signature Premier Properties

$405,000

Sold Mar 30, 2026
- 3 Beds
- 2 Baths
- 1,584 Sq Ft
805 Doane Ave

Bellport, NY
- 1% Above List
- 217 Days On Market
- $256/SF
- Current Est. Value $406K
Keith Jefferson Signature Premier Properties

$505,000

Sold Jan 2, 2026
- 3 Beds
- 2 Baths
- 1,076 Sq Ft
45 Malcolm Way

Riverhead, NY
- 1% Below List
- 25 Days On Market
- $469/SF
- Current Est. Value $529K
Keith Jefferson Signature Premier Properties

$175,000

Sold Dec 17, 2025
- 3 Beds
- 2 Baths
- 960 Sq Ft
433 Mill Rd

Unit 4

Calverton, NY
- 52 Days On Market
- $182/SF
Keith Jefferson Signature Premier Properties

$539,500

Sold Dec 4, 2025
- 4 Beds
- 2 Baths
- 2,300 Sq Ft
72 Propose Rd

Shirley, NY
- 2% Below List
- 78 Days On Market
- $235/SF
- Current Est. Value $559K
Keith Jefferson Signature Premier Properties

$155,000

Sold Nov 28, 2025
- 3 Beds
- 1 Bath
- 1,000 Sq Ft
433 Mill Rd

Unit 57

Calverton, NY
- 6% Below List
- 43 Days On Market
- $155/SF
Keith Jefferson Signature Premier Properties

$525,000

Sold Nov 24, 2025
- 3 Beds
- 2 Baths
- 990 Sq Ft
11 Segal Ave

Riverhead, NY
- 5% Above List
- 29 Days On Market
- $530/SF
- Current Est. Value $544K
Keith Jefferson Signature Premier Properties

$425,000

Sold Nov 24, 2025
- 2 Beds
- 1.5 Baths
- 792 Sq Ft
23 Grove St

Riverhead, NY
- 13% Below List
- 105 Days On Market
- $537/SF
- Current Est. Value $433K
Keith Jefferson Signature Premier Properties

Awards and Designations

NAR - National Association of Realtors

Agent License: New York #30JE0668615

Keith Jefferson

(516) 407-8410

Homes for Sale by City

Keith Jefferson

About Keith

Transaction History

Seller 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 Keith is Experienced In

Keith's Listings and Deals

Keith's Active Listings

Recently Sold

Awards and Designations