7,061

Mason County, KY Homes

Section Image
    • 8147 Day Pike, Maysville, KY 41056
      8147 Day Pike, Maysville, KY 41056
      8147 Day Pike, Maysville, KY 41056
      /19

      Est $162,627 Not Listed For Sale

      8147 Day Pike, Maysville, KY 41056

      • 5 Beds
      • 3 Baths
      • 1,800 Sq Ft
      • Built 1990
      8147 Day Pike, Maysville, KY 41056

      Last Sold Summary

      • 145% Above List Price
      • $37/SF
      • 8 Days On Market

      Last Sold Price $66,500

      Last Listing Agent Barbara Bashaw Bashaw Realty & Auction, LLC

    • 9046 Wagel Ln, Maysville, KY 41056
      9046 Wagel Ln, Maysville, KY 41056
      9046 Wagel Ln, Maysville, KY 41056
      /31

      Est $339,469 Not Listed For Sale

      9046 Wagel Ln, Maysville, KY 41056

      • 3 Beds
      • 2 Baths
      • 1,748 Sq Ft
      • Built 1980
      9046 Wagel Ln, Maysville, KY 41056

      Last Sold Summary

      • 33% Above List Price
      • $146/SF
      • 13 Days On Market

      Last Sold Price $255,000

      Last Listing Agent Mark Mattox Mark Mattox Real Estate Broker & Auctioneer, Inc

    • 7103 Orangeburg Rd, Maysville, KY 41056
      7103 Orangeburg Rd, Maysville, KY 41056
      7103 Orangeburg Rd, Maysville, KY 41056
      /18

      Est $128,385 Not Listed For Sale

      7103 Orangeburg Rd, Maysville, KY 41056

      • 3 Beds
      • 2 Baths
      • 1,579 Sq Ft
      • Built 1960
      7103 Orangeburg Rd, Maysville, KY 41056

      Last Sold Summary

      • 257% Above List Price
      • $23/SF
      • 25 Days On Market

      Last Sold Price $36,000

      Last Listing Agent Barbara Bashaw Bashaw Realty & Auction, LLC

    • 8021 Day Pike, Maysville, KY 41056
      8021 Day Pike, Maysville, KY 41056
      8021 Day Pike, Maysville, KY 41056
      /88

      Est $388,165 Not Listed For Sale

      8021 Day Pike, Maysville, KY 41056

      • 3 Beds
      • 4 Baths
      • 3,600 Sq Ft
      • Built 1994
      8021 Day Pike, Maysville, KY 41056

      Last Sold Summary

      • 19% Above List Price
      • $91/SF
      • 463 Days On Market

      Last Sold Price $327,515

      Last Listing Agent Marty J. Hunter KY Property Hunters

    • 7215 Taylor Mill Rd, Maysville, KY 41056
      7215 Taylor Mill Rd, Maysville, KY 41056
      7215 Taylor Mill Rd, Maysville, KY 41056
      /49

      Est $209,198 Not Listed For Sale

      7215 Taylor Mill Rd, Maysville, KY 41056

      • 3 Beds
      • 1.5 Baths
      • 1,344 Sq Ft
      • Built 2001
      7215 Taylor Mill Rd, Maysville, KY 41056

      Last Sold Summary

      • 136% Above List Price
      • $66/SF
      • 27 Days On Market

      Last Sold Price $88,660

      Last Listing Agent Doug Garner CENTURY 21 Garner Properties

    • 3100 Pickett Ln, Maysville, KY 41056
      3100 Pickett Ln, Maysville, KY 41056
      3100 Pickett Ln, Maysville, KY 41056
      /7

      Est $228,232 Not Listed For Sale

      3100 Pickett Ln, Maysville, KY 41056

      • 3 Beds
      • 2 Baths
      • 1,800 Sq Ft
      • Built 1998
      3100 Pickett Ln, Maysville, KY 41056

      Last Sold Summary

      • 63% Above List Price
      • $78/SF
      • 345 Days On Market

      Last Sold Price $140,299

      Last Listing Agent Christopher Stevens RealHome Services and Solutions

    • 5008 Trails End Dr, Mayslick, KY 41055
      5008 Trails End Dr, Mayslick, KY 41055
      5008 Trails End Dr, Mayslick, KY 41055
      /12

      Est $148,936 Not Listed For Sale

      5008 Trails End Dr, Mayslick, KY 41055

      • 3 Beds
      • 1.5 Baths
      • 1,036 Sq Ft
      • Built 1977
      5008 Trails End Dr, Mayslick, KY 41055

      Last Sold Summary

      • 113% Above List Price
      • $68/SF
      • 106 Days On Market

      Last Sold Price $70,000

      Last Listing Agent Barbara Bashaw Bashaw Realty & Auction, LLC

    • 5059 Raymond Rd, Mayslick, KY 41055
      5059 Raymond Rd, Mayslick, KY 41055
      5059 Raymond Rd, Mayslick, KY 41055
      /48

      Est $191,570 Not Listed For Sale

      5059 Raymond Rd, Mayslick, KY 41055

      • 3 Beds
      • 1 Bath
      • 1,696 Sq Ft
      • Built 1900
      5059 Raymond Rd, Mayslick, KY 41055

      Last Sold Summary

      • 54% Above List Price
      • $74/SF
      • 57 Days On Market

      Last Sold Price $124,800

      Last Listing Agent Tammy Alburg KY Property Hunters

    • 4017 Clarks Run Rd, Maysville, KY 41056
      4017 Clarks Run Rd, Maysville, KY 41056
      4017 Clarks Run Rd, Maysville, KY 41056
      /21

      Est $331,213 Not Listed For Sale

      4017 Clarks Run Rd, Maysville, KY 41056

      • 4 Beds
      • 4 Baths
      • 2,484 Sq Ft
      • Built 1991
      4017 Clarks Run Rd, Maysville, KY 41056

      Last Sold Summary

      • 84% Above List Price
      • $72/SF
      • 15 Days On Market

      Last Sold Price $180,000

      Last Listing Agent Barbara Bashaw Bashaw Realty & Auction, LLC

    • 3285 Tuckahoe Rd, Dover, KY 41034
      3285 Tuckahoe Rd, Dover, KY 41034
      3285 Tuckahoe Rd, Dover, KY 41034
      /32

      Est $625,829 Not Listed For Sale

      3285 Tuckahoe Rd, Dover, KY 41034

      • 3 Beds
      • 1 Bath
      • 1,908 Sq Ft
      3285 Tuckahoe Rd, Dover, KY 41034

      Last Sold Summary

      • 145% Above List Price
      • $134/SF
      • 8 Days On Market

      Last Sold Price $255,000

      Last Listing Agent Marty Hunter Hoffman International Properties

    • 3200 Tuckahoe Rd, Dover, KY 41034
      3200 Tuckahoe Rd, Dover, KY 41034
      3200 Tuckahoe Rd, Dover, KY 41034
      /59

      Est $315,026 Not Listed For Sale

      3200 Tuckahoe Rd, Dover, KY 41034

      • 3 Beds
      • 2 Baths
      • 2,036 Sq Ft
      3200 Tuckahoe Rd, Dover, KY 41034

      Last Sold Summary

      • 92% Above List Price
      • $81/SF
      • 34 Days On Market

      Last Sold Price $164,500

      Last Listing Agent Marty Hunter Hoffman International Properties

    • 3051 Lees Creek Rd, Dover, KY 41034
      3051 Lees Creek Rd, Dover, KY 41034
      3051 Lees Creek Rd, Dover, KY 41034
      /26

      Est $97,220 Not Listed For Sale

      3051 Lees Creek Rd, Dover, KY 41034

      • 3 Beds
      • 1 Bath
      • 1,510 Sq Ft
      • Built 1910
      3051 Lees Creek Rd, Dover, KY 41034

      Last Sold Summary

      • 105% Above List Price
      • $31/SF
      • 28 Days On Market

      Last Sold Price $47,500

      Last Listing Agent Gigi Dales HER Realtors

    • 4052 Pumpelly Ln, Mayslick, KY 41055
      4052 Pumpelly Ln, Mayslick, KY 41055
      4052 Pumpelly Ln, Mayslick, KY 41055
      /56

      Not Listed For Sale

      4052 Pumpelly Ln, Mayslick, KY 41055

      • 3 Beds
      • 2 Baths
      • 1,500 Sq Ft
      • Built 1996
      4052 Pumpelly Ln, Mayslick, KY 41055

      Last Sold Summary

      • $140/SF
      • 296 Days On Market

      Last Sold Price $210,000

      Last Listing Agent Marty J. Hunter KY Property Hunters

    • 51020 U S 62, Mayslick, KY 41055
      51020 U S 62, Mayslick, KY 41055
      51020 U S 62, Mayslick, KY 41055
      /88

      Not Listed For Sale

      51020 U S 62, Mayslick, KY 41055

      • 5 Beds
      • 2 Baths
      • Built 2001
      51020 U S 62, Mayslick, KY 41055

      Last Sold Summary

      • 476 Days On Market

      Last Sold Price $80,000

      Last Listing Agent Thomas White White Realty, LLC

    • 51178 U S 62, Mayslick, KY 41055
      51178 U S 62, Mayslick, KY 41055
      51178 U S 62, Mayslick, KY 41055
      /10

      Est $166,383 Not Listed For Sale

      51178 U S 62, Mayslick, KY 41055

      • 3 Beds
      • 1 Bath
      • 1,856 Sq Ft
      51178 U S 62, Mayslick, KY 41055

      Last Sold Summary

      • 623% Above List Price
      • $12/SF
      • 54 Days On Market

      Last Sold Price $23,000

      Last Listing Agent Mark Mattox Mark Mattox Real Estate Broker & Auctioneer, Inc

    • 3409 Mary Ingles Hwy, Dover, KY 41034
      3409 Mary Ingles Hwy, Dover, KY 41034
      /2

      Not Listed For Sale

      3409 Mary Ingles Hwy, Dover, KY 41034

      • 4 Beds
      • 1 Bath
      • 1,360 Sq Ft
      3409 Mary Ingles Hwy, Dover, KY 41034

      Last Sold Summary

      • $74/SF
      • 0 Days On Market

      Last Sold Price $100,000

      Last Listing Agent Andrew Wilson National Real Estate

    • 5010 Raymond Rd, Mays Lick, KY 41055
      5010 Raymond Rd, Mays Lick, KY 41055
      5010 Raymond Rd, Mays Lick, KY 41055
      /78

      Est $229,438 Not Listed For Sale

      5010 Raymond Rd, Mays Lick, KY 41055

      • 4 Beds
      • 2 Baths
      • 3,150 Sq Ft
      • Built 1900
      5010 Raymond Rd, Mays Lick, KY 41055

      Last Sold Summary

      • 109% Above List Price
      • $35/SF
      • 533 Days On Market

      Last Sold Price $110,000

      Last Listing Agent Marty Hunter Keller Williams Commonwealth

    • 6005 Ky Highway 3170, Maysville, KY 41056
      6005 Ky Highway 3170, Maysville, KY 41056
      6005 Ky Highway 3170, Maysville, KY 41056
      /13

      Est $139,808 Not Listed For Sale

      6005 Ky Highway 3170, Maysville, KY 41056

      • 2 Beds
      • 1 Bath
      • 1,199 Sq Ft
      • Built 1961
      6005 Ky Highway 3170, Maysville, KY 41056

      Last Sold Summary

      • 414% Above List Price
      • $23/SF
      • 117 Days On Market

      Last Sold Price $27,200

      Last Listing Agent Barbara Bashaw Bashaw Realty & Auction, LLC

    • 51020 Bucktown Rd, Mayslick, KY 41055
      51020 Bucktown Rd, Mayslick, KY 41055
      51020 Bucktown Rd, Mayslick, KY 41055
      /29

      Not Listed For Sale

      51020 Bucktown Rd, Mayslick, KY 41055

      • 5 Beds
      • 2 Baths
      • 1,927 Sq Ft
      • Built 2001
      51020 Bucktown Rd, Mayslick, KY 41055

      Last Sold Summary

      • $42/SF
      • 476 Days On Market

      Last Sold Price $80,000

      Last Listing Agent Unknown Member White Realty, LLC

    • 4078 Barrett Pike, Maysville, KY 41056
      4078 Barrett Pike, Maysville, KY 41056
      4078 Barrett Pike, Maysville, KY 41056
      /8

      Not Listed For Sale

      4078 Barrett Pike, Maysville, KY 41056

      • 3 Beds
      • 2 Baths
      • 960 Sq Ft
      • Built 1989
      4078 Barrett Pike, Maysville, KY 41056

      Last Sold Summary

      • $53/SF
      • 101 Days On Market

      Last Sold Price $50,880

      Last Listing Agent Barry Purvis Story Realty

    • 7022 Lake Ridge Dr, Maysville, KY 41056
      7022 Lake Ridge Dr, Maysville, KY 41056
      7022 Lake Ridge Dr, Maysville, KY 41056
      /11

      Not Listed For Sale

      7022 Lake Ridge Dr, Maysville, KY 41056

      • 3 Beds
      • 2 Baths
      • 1,284 Sq Ft
      • Built 1988
      7022 Lake Ridge Dr, Maysville, KY 41056

      Last Sold Summary

      • $33/SF
      • 11 Days On Market

      Last Sold Price $42,000

      Last Listing Agent Barbara Bashaw Bashaw Realty & Auction, LLC

    • 4050 Johnson Ln, Mays Lick, KY 41055
      4050 Johnson Ln, Mays Lick, KY 41055
      4050 Johnson Ln, Mays Lick, KY 41055
      /34

      Est $459,761 Not Listed For Sale

      4050 Johnson Ln, Mays Lick, KY 41055

      • 3 Beds
      • 1 Bath
      • 1,125 Sq Ft
      • Built 1951
      4050 Johnson Ln, Mays Lick, KY 41055

      Last Sold Summary

      • 12% Above List Price
      • $364/SF
      • 35 Days On Market

      Last Sold Price $410,000

      Last Listing Agent TJ Burton Poe's Realty & Auction

    • 8005 Cobb Ln, Maysville, KY 41056
      8005 Cobb Ln, Maysville, KY 41056
      8005 Cobb Ln, Maysville, KY 41056
      /16

      Not Listed For Sale

      8005 Cobb Ln, Maysville, KY 41056

      • 4 Beds
      • 1 Bath
      • Built 1989
      8005 Cobb Ln, Maysville, KY 41056

      Last Sold Summary

      • 13 Days On Market

      Last Sold Price $69,000

      Last Listing Agent TJ Burton Poe's Realty & Auction

    • 000 Cobb Ln, Maysville, KY 41056
      000 Cobb Ln, Maysville, KY 41056
      000 Cobb Ln, Maysville, KY 41056
      /11

      Not Listed For Sale

      000 Cobb Ln, Maysville, KY 41056

      000 Cobb Ln, Maysville, KY 41056

      Last Sold Summary

      • 13 Days On Market

      Last Sold Price $100,000

      Last Listing Agent TJ Burton Poe's Realty & Auction

    • 6281 Helena Rd, Mayslick, KY 41055
      6281 Helena Rd, Mayslick, KY 41055
      6281 Helena Rd, Mayslick, KY 41055
      /6

      Not Listed For Sale

      6281 Helena Rd, Mayslick, KY 41055

      6281 Helena Rd, Mayslick, KY 41055

      Last Sold Summary

      • 154 Days On Market

      Last Sold Price $65,000

      Last Listing Agent TJ Burton Poe's Realty & Auction

    • 235 Bon Haven Rd, Maysville, KY 41056
      235 Bon Haven Rd, Maysville, KY 41056
      235 Bon Haven Rd, Maysville, KY 41056
      /47

      Est $366,563 Not Listed For Sale

      235 Bon Haven Rd, Maysville, KY 41056

      • 4 Beds
      • 3.5 Baths
      • 3,047 Sq Ft
      • Built 1987
      235 Bon Haven Rd, Maysville, KY 41056

      Last Sold Summary

      • 20% Above List Price
      • $100/SF
      • 18 Days On Market

      Last Sold Price $305,000

      Last Listing Agent William Sowers ERA Select Real Estate

    • 6088 Ky Highway 419, Maysville, KY 41056
      6088 Ky Highway 419, Maysville, KY 41056
      6088 Ky Highway 419, Maysville, KY 41056
      /20

      Not Listed For Sale

      6088 Ky Highway 419, Maysville, KY 41056

      • 3 Beds
      • 2 Baths
      • 1,792 Sq Ft
      • Built 1998
      6088 Ky Highway 419, Maysville, KY 41056

      Last Sold Summary

      • $25/SF
      • 40 Days On Market

      Last Sold Price $45,377

      Last Listing Agent Barbara Bashaw Bashaw Realty & Auction, LLC

    • 0 Lee's Creek Rd, Dover, KY 41034
      0 Lee's Creek Rd, Dover, KY 41034
      0 Lee's Creek Rd, Dover, KY 41034
      /24

      Not Listed For Sale

      0 Lee's Creek Rd, Dover, KY 41034

      0 Lee's Creek Rd, Dover, KY 41034

      Last Sold Summary

      • 30 Days On Market

      Last Sold Price $135,000

      Last Listing Agent Liz Earick Dykes HER Realtors

    • 2282 Hill City View, Maysville, KY 41056
      2282 Hill City View, Maysville, KY 41056
      2282 Hill City View, Maysville, KY 41056
      /12

      Est $146,336 Not Listed For Sale

      2282 Hill City View, Maysville, KY 41056

      • 3 Beds
      • 1 Bath
      • 1,050 Sq Ft
      • Built 1984
      2282 Hill City View, Maysville, KY 41056

      Last Sold Summary

      • 144% Above List Price
      • $57/SF
      • 166 Days On Market

      Last Sold Price $60,000

      Last Listing Agent Barbara Bashaw Bashaw Realty & Auction, LLC

    • 31082 Ky Highway 435, Dover, KY 41034
      31082 Ky Highway 435, Dover, KY 41034
      31082 Ky Highway 435, Dover, KY 41034
      /12

      Est $113,516 Not Listed For Sale

      31082 Ky Highway 435, Dover, KY 41034

      • 2 Beds
      • 1 Bath
      • 1,320 Sq Ft
      • Built 1900
      31082 Ky Highway 435, Dover, KY 41034

      Last Sold Summary

      • 711% Above List Price
      • $11/SF
      • 210 Days On Market

      Last Sold Price $14,000

      Last Listing Agent Mark Mattox Mark Mattox Real Estate Broker & Auctioneer, Inc

    • 7242 Ky Highway 11, Maysville, KY 41056
      7242 Ky Highway 11, Maysville, KY 41056
      7242 Ky Highway 11, Maysville, KY 41056
      /63

      Est $920,182 Not Listed For Sale

      7242 Ky Highway 11, Maysville, KY 41056

      • 5 Beds
      • 4 Baths
      • 6,088 Sq Ft
      • Built 1853
      7242 Ky Highway 11, Maysville, KY 41056

      Last Sold Summary

      • 8% Below List Price
      • $164/SF
      • 227 Days On Market

      Last Sold Price $1,000,000

      Last Listing Agent Julie M Thornhill Turf Town Properties

    • 0 Cabin Creek Rd, Maysville, KY 41056
      0 Cabin Creek Rd, Maysville, KY 41056
      0 Cabin Creek Rd, Maysville, KY 41056
      /11

      Not Listed For Sale

      0 Cabin Creek Rd, Maysville, KY 41056

      0 Cabin Creek Rd, Maysville, KY 41056

      Last Sold Summary

      • 623 Days On Market

      Last Sold Price $95,000

      Last Listing Agent Denise Barnes Carriage Gate, Ltd.

    • 5220 Us Highway 62, Maysville, KY 41056
      5220 Us Highway 62, Maysville, KY 41056
      5220 Us Highway 62, Maysville, KY 41056
      /10

      Est $170,034 Not Listed For Sale

      5220 Us Highway 62, Maysville, KY 41056

      • 3 Beds
      • 1 Bath
      • 1,140 Sq Ft
      • Built 1958
      5220 Us Highway 62, Maysville, KY 41056

      Last Sold Summary

      • 983% Above List Price
      • $14/SF
      • 37 Days On Market

      Last Sold Price $15,700

      Last Listing Agent Christopher Stevens RealHome Services and Solutions

    • 1 Tuckahoe Rd, Dover, KY 41034
      1 Tuckahoe Rd, Dover, KY 41034
      1 Tuckahoe Rd, Dover, KY 41034
      /3

      Not Listed For Sale

      1 Tuckahoe Rd, Dover, KY 41034

      1 Tuckahoe Rd, Dover, KY 41034

      Last Sold Summary

      • 321 Days On Market

      Last Sold Price $33,600

      Last Listing Agent Marty Hunter Rector Hayden Realtors

    • 502 Jail St, Maysville, KY 41056
      502 Jail St, Maysville, KY 41056
      502 Jail St, Maysville, KY 41056
      /18

      Est $168,098 Not Listed For Sale

      502 Jail St, Maysville, KY 41056

      • 3 Beds
      • 1 Bath
      • 1,642 Sq Ft
      • Built 1965
      502 Jail St, Maysville, KY 41056

      Last Sold Summary

      • 367% Above List Price
      • $22/SF
      • 296 Days On Market

      Last Sold Price $36,000

      Last Listing Agent Barbara Bashaw Bashaw Realty & Auction, LLC

    • 7018 Baxter Ln, Maysville, KY 41056
      7018 Baxter Ln, Maysville, KY 41056
      7018 Baxter Ln, Maysville, KY 41056
      /11

      Not Listed For Sale

      7018 Baxter Ln, Maysville, KY 41056

      • 3 Beds
      • 2 Baths
      • 1,568 Sq Ft
      • Built 1990
      7018 Baxter Ln, Maysville, KY 41056

      Last Sold Summary

      • $31/SF
      • 145 Days On Market

      Last Sold Price $49,000

      Last Listing Agent Anthony M McDaniel Rector Hayden Realtors

    • 6175 Metcalf Mill Rd, Ewing, KY 41039
      6175 Metcalf Mill Rd, Ewing, KY 41039
      6175 Metcalf Mill Rd, Ewing, KY 41039
      /20

      Not Listed For Sale

      6175 Metcalf Mill Rd, Ewing, KY 41039

      • 3 Beds
      • 2 Baths
      • 1,996 Sq Ft
      • Built 1996
      6175 Metcalf Mill Rd, Ewing, KY 41039

      Last Sold Summary

      • $29/SF
      • 8 Days On Market

      Last Sold Price $58,000

      Last Listing Agent Barbara Bashaw Bashaw Realty & Auction, LLC

    • 6009 Green House Rd, Mayslick, KY 41055
      6009 Green House Rd, Mayslick, KY 41055
      6009 Green House Rd, Mayslick, KY 41055
      /13

      Not Listed For Sale

      6009 Green House Rd, Mayslick, KY 41055

      • 3 Beds
      • 2 Baths
      • 2,464 Sq Ft
      • Built 1980
      6009 Green House Rd, Mayslick, KY 41055

      Last Sold Summary

      • $18/SF
      • 6 Days On Market

      Last Sold Price $45,000

      Last Listing Agent Barbara Bashaw Bashaw Realty & Auction, LLC

    • 6107 Ky Highway 3170, Maysville, KY 41056
      6107 Ky Highway 3170, Maysville, KY 41056
      6107 Ky Highway 3170, Maysville, KY 41056
      /24

      Est $147,798 Not Listed For Sale

      6107 Ky Highway 3170, Maysville, KY 41056

      • 2 Beds
      • 1 Bath
      • 1,736 Sq Ft
      • Built 1900
      6107 Ky Highway 3170, Maysville, KY 41056

      Last Sold Summary

      • 252% Above List Price
      • $24/SF
      • 176 Days On Market

      Last Sold Price $42,000

      Last Listing Agent Jonathan Wood Sandy Stuart Realty

    • 6380 Strodes Run, Maysville, KY 41056
      6380 Strodes Run, Maysville, KY 41056
      6380 Strodes Run, Maysville, KY 41056
      /44

      Not Listed For Sale

      6380 Strodes Run, Maysville, KY 41056

      • 3 Beds
      • 2 Baths
      • 1,680 Sq Ft
      • Built 1998
      6380 Strodes Run, Maysville, KY 41056

      Last Sold Summary

      • $41/SF
      • 50 Days On Market

      Last Sold Price $69,000

      Last Listing Agent Marty Hunter Keller Williams Commonwealth

Showing Results 641 - 680, Page 17 of 18

Kentucky Mason County

Real Estate & Homes

How to Buy a Home How to Finance a Home How to Sell a Home

Disclaimer: Certain information contained herein is derived from information provided by parties other than Homes.com. All information provided is deemed reliable, but is not guaranteed to be accurate and should be independently verified.

Homes.com Licensing Information

§ 442-H New York Standard Operating Procedures

New York Fair Housing Notice

TREC: Information about brokerage services, Consumer protection notice

California DRE #01937601

Contact Homes.com Brokerage

Copyright © 2026 CoStar Group