Keith Jefferson

Ronkonkoma NY

Signature Premier Properties

67 Closed Sales

$30.2M Total Value

$310K - $775K Price Range

$450.6K 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, Manufactured, Commercial

Years of Experience: 39

Transaction History

1 Year
2 Year
5 Year

Seller Deals
Total Deals	16
Total Value	$7,324,500
Average Sale Price	$457,781
Price Range	$155K - $725K

1 Year View by Quarter

Seller Deals
Total Deals	29
Total Value	$13,726,000
Average Sale Price	$473,310
Price Range	$155K - $775K

Buyer Deals
Total Deals	2
Total Value	$683,000
Average Sale Price	$341,500
Price Range	$243K - $440K

2 Year View by Quarter

Seller Deals
Total Deals	60
Total Value	$27,707,461
Average Sale Price	$461,791
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

Keith's Active Listings

$609,990
- 3 Beds
- 2 Baths
- 1,909 Sq Ft
113 Southfield Rd

Calverton, NY
Sprawling Manors 3 Bedroom, Features vaulted ceilings, 2 Full baths, Master bedroom suite, All spacious rooms, Wood burning stove, New cesspool, 2 Car attached garage w/rv side space. All appliances STAY! Inground sprinklers. Seated fenced.65 acre, Fenced property, Skylights, Retractable Awnings.Close to all, Schools, Shopping, Splish splash, Beaches, and Wine Country., Additional information:

Keith Jefferson Signature Premier Properties

$399,990
- 3 Beds
- 1 Bath
- 1,400 Sq Ft
914 Osborn Ave

Riverhead, NY
Historical Marvel 3 Br Colonial features Hardwood floors, 1,400 square feet, full basement with an OSE- Bilco doors, Low taxes, Level Property. Detached 2-car garage, spacious bedrooms, very close to schools & shopping, centrally located, investors' delight!

Keith Jefferson Signature Premier Properties

$399,990
- 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
- 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
- 2 Beds
- 1.5 Baths
- 1,093 Sq Ft
364 Hamilton Ave

Riverhead, NY
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Keith Jefferson Signature Premier Properties

Recently Sold

$460,000

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

Riverhead, NY
- 8% Below List
- $657/SF
- 52 Days On Market
- Current Est. Value $466K
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
- $256/SF
- 217 Days On Market
- Current Est. Value $379K
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
- $469/SF
- 25 Days On Market
- Current Est. Value $519K
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
- $182/SF
- 52 Days On Market
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
- $235/SF
- 78 Days On Market
- Current Est. Value $549K
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
- $155/SF
- 43 Days On Market
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
- $530/SF
- 29 Days On Market
- Current Est. Value $533K
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
- $537/SF
- 105 Days On Market
- Current Est. Value $429K
Keith Jefferson Signature Premier Properties

$550,000

Sold Oct 16, 2025
- 3 Beds
- 1 Bath
- 1,104 Sq Ft
44 Goodridge Ave

Riverhead, NY
- 4% Above List
- $498/SF
- 20 Days On Market
- Current Est. Value $558K
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