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Diane Keegan

Diane Keegan
Real Estate Agent (Salesperson)
Wantagh NY

Salesperson (NY: 40KE0842398)

30 years experience

REALTOR® 2 Active Listings Serves Nassau County, NY
View on Realtor.com

Contact Information

Brokerage
All Island Estates Realty Corp

Office Website
Office Address
3242 Railroad Ave
Wantagh, NY  11793
(Nassau County)
Office Phone
516-783-5600
Office Fax
Mobile
516-458-1864
Email
dian*@****************.com

Service Areas

East Meadow: NY Seaford: NY North Bellmore: NY Levittown: NY Wantagh: NY North Wantagh: NY Merrick: NY Bellmore: NY North Merrick: NY North Massapequa: NY Plainedge: NY South Farmingdale: NY East Massapequa: NY Massapequa: NY North Lindenhurst: NY West Babylon: NY Lindenhurst: NY East Farmingdale: NY Copiague: NY Garden City: NY Rockville Centre: NY Garden City South: NY Lakeview: NY Malverne Park Oaks: NY West Hempstead: NY

About Diane Keegan

With two decades of unwavering commitment to the real estate industry, this agent prioritizes the needs of clients above all else. Their extensive experience is complemented by a genuine passion for helping individuals navigate the complexities of buying and selling properties.

Nassau County, NY Real Estate Market Analysis (Single Family Homes)

$1,433,811
Avg. Listing Price
From Diane's portfolio
4.1 / 3.0
Avg. Beds/Baths
Typical property size
2,485 sf
Avg. Square Footage
Interior living space
2985
Active Listings
Current inventory

Nassau County's real estate market represents one of New York's most dynamic and valuable suburban landscapes, with properties consistently ranking among the highest-priced in the nation. This Long Island powerhouse attracts buyers seeking premium coastal living, top-tier school districts, and convenient Manhattan access, creating a marketplace where million-dollar homes are commonplace and inventory moves quickly despite premium pricing.

The county's real estate ecosystem supports 11,944 total actively licensed agents, with all 11,944 agents maintaining email contact information, reflecting the market's technological sophistication and professional connectivity. This robust agent network serves diverse communities from Hempstead's affordable starter homes to Old Westbury's sprawling estates, each requiring specialized market knowledge and relationship management.

Major Nassau County, New York Real Estate Markets

The Gold Coast communities of Manhasset, Port Washington, and Roslyn dominate Nassau's luxury segment, where historic estates and waterfront properties command prices exceeding $3 million. Meanwhile, established neighborhoods like Garden City, Rockville Centre, and Westbury offer premium suburban living with strong resale values, while emerging markets in Freeport and Uniondale present opportunities for first-time buyers and investors seeking appreciation potential.

Nassau's geography creates distinct micro-markets along the North Shore's prestigious waterfront communities versus the South Shore's beach-adjacent neighborhoods like Long Beach and Atlantic Beach. Each region maintains unique pricing dynamics, with proximity to transportation hubs like the Long Island Rail Road stations significantly impacting property values and market velocity throughout communities from Great Neck to Hicksville.

Market Dynamics and Geographic Complexity

Nassau County's real estate market operates on compressed inventory cycles, where desirable properties in sought-after school districts like Jericho or Syosset often receive multiple offers within days of listing. This competitive environment demands agents who understand hyperlocal nuances, from flood zone implications in waterfront areas to the impact of property taxes that can exceed $30,000 annually on premium homes.

The market's complexity extends beyond pricing to encompass co-op buildings in communities like Great Neck Plaza, new construction developments in previously industrial areas, and the ongoing conversion of larger estates into luxury subdivisions. These varied property types require agents with specialized expertise in everything from co-op board approval processes to new construction warranties and municipal approval procedures.

Why Businesses Need Nassau County, New York Agent Contact Data

Mortgage lenders, home inspection companies, and luxury service providers targeting Nassau County's affluent market need direct access to the county's extensive agent network to capture high-value transactions. With average home prices significantly exceeding national norms, each successful business relationship with local agents can generate substantial revenue through premium-priced services and repeat referral opportunities.

Technology companies, marketing firms, and financial services businesses benefit from connecting with Nassau's digitally-connected agent community to introduce innovative tools and services. Given the market's competitive nature and sophisticated clientele, agents actively seek resources that provide competitive advantages, creating opportunities for B2B companies offering everything from virtual staging software to client management platforms and investment analysis tools.

Current Property Listings

As of 2/7/2026, Diane Keegan has 2 properties for sale in Wantagh and surrounding areas.

$669,000

Listed 2026-01-21

6 Arden Ln
Farmingville, NY  11738

Beds: 5.0
Baths: 2.5
Sq Ft: 2,800
Lot: 13,068 sf
Single Family Map
View Full Details

$669,000

Listed 2026-01-21

6 Arden
Farmingville, NY  11738

Beds: 5.0
Baths: 2.5
Sq Ft: 2,800
Lot: 13,068 sf
Single Family Map
View Full Details

Current Property Rentals

Diane Keegan currently has no rental properties available in Wantagh and surrounding areas. Check back later.