1,621

Recently Sold Sandy Springs, SC Homes

Section Image Section Image
  • 811 Northlake Dr Unit 8K, Anderson, SC 29625
    811 Northlake Dr Unit 8K, Anderson, SC 29625
    811 Northlake Dr Unit 8K, Anderson, SC 29625
    /40

    $145,000 Sold Jan 30, 2026

    811 Northlake Dr Unit 8K, Anderson, SC 29625

    • 2 Beds
    • 2 Baths
    • 1,200+ Sq Ft

    Last Sold Summary

    • 22% Below List Price
    • $121/SF
    • 75 Days On Market

    Last Listing Agent Lynn Blanton Keller Williams Greenwood

    811 Northlake Dr Unit 8K, Anderson, SC 29625
  • 2000 Northview Ave, Anderson, SC 29625
    2000 Northview Ave, Anderson, SC 29625
    2000 Northview Ave, Anderson, SC 29625
    /27

    $251,000 Sold Mar 19, 2025

    2000 Northview Ave, Anderson, SC 29625

    • 3 Beds
    • 2 Baths
    • 1,833 Sq Ft
    • Built 1940

    Last Sold Summary

    • 9% Below List Price
    • $137/SF
    • 29 Days On Market

    Current Estimated Value $248,106

    Last Listing Agent Carmen Estrada-Valdez Prime Realty, LLC

    2000 Northview Ave, Anderson, SC 29625
  • 1516 Johanna Cir, Anderson, SC 29621
    1516 Johanna Cir, Anderson, SC 29621
    1516 Johanna Cir, Anderson, SC 29621
    /40

    $185,000 Sold Apr 11, 2025

    1516 Johanna Cir, Anderson, SC 29621

    • 3 Beds
    • 2 Baths
    • 1,400+ Sq Ft

    Last Sold Summary

    • 8% Below List Price
    • $132/SF
    • 3 Days On Market

    Last Listing Agent Tammy Woodbury eXp Realty - Clever People

    1516 Johanna Cir, Anderson, SC 29621
  • 2 P St, Anderson, SC 29625
    2 P St, Anderson, SC 29625
    2 P St, Anderson, SC 29625
    /13

    $50,000 Sold Jan 20, 2026

    2 P St, Anderson, SC 29625

    • 3 Beds
    • 1 Bath
    • 1,200+ Sq Ft
    • Built 1950

    Last Sold Summary

    • 41% Below List Price
    • $42/SF
    • 362 Days On Market

    Last Listing Agent Luke Martin Charles H. Knight, LLC

    2 P St, Anderson, SC 29625
  • 200 Tiffany Dr, Anderson, SC 29625
    200 Tiffany Dr, Anderson, SC 29625
    200 Tiffany Dr, Anderson, SC 29625
    /43

    $265,000 Sold Dec 29, 2025

    200 Tiffany Dr, Anderson, SC 29625

    • 3 Beds
    • 2.5 Baths
    • 2,000+ Sq Ft
    • Built 1982

    Last Sold Summary

    • $132/SF
    • 0 Days On Market

    Last Listing Agent Tammy Woodbury eXp Realty - Clever People

    200 Tiffany Dr, Anderson, SC 29625
  • 116 Cherokee Cir, Anderson, SC 29621
    116 Cherokee Cir, Anderson, SC 29621
    116 Cherokee Cir, Anderson, SC 29621
    /36

    $620,000 Sold Jun 13, 2025

    116 Cherokee Cir, Anderson, SC 29621

    • 5 Beds
    • 4.5 Baths
    • 4,600+ Sq Ft
    • Built 1967

    Last Sold Summary

    • 17% Below List Price
    • $135/SF
    • 281 Days On Market

    Current Estimated Value $635,516

    Last Listing Agent Rhonda Collins Western Upstate Keller William

    116 Cherokee Cir, Anderson, SC 29621
  • 3040 Sunset Forest Rd, Anderson, SC 29626
    3040 Sunset Forest Rd, Anderson, SC 29626
    3040 Sunset Forest Rd, Anderson, SC 29626
    /44

    $250,000 Sold Sep 30, 2025

    3040 Sunset Forest Rd, Anderson, SC 29626

    • 3 Beds
    • 2 Baths
    • 1,400+ Sq Ft

    Last Sold Summary

    • 7% Below List Price
    • $179/SF
    • 83 Days On Market

    Current Estimated Value $245,957

    Last Listing Agent Rhonda Justice Casey Group Real Estate - Ande

    3040 Sunset Forest Rd, Anderson, SC 29626
  • 4 Robin Dr, Anderson, SC 29626
    4 Robin Dr, Anderson, SC 29626
    4 Robin Dr, Anderson, SC 29626
    /37

    $265,000 Sold Mar 17, 2025

    4 Robin Dr, Anderson, SC 29626

    • 3 Beds
    • 2 Baths
    • 1,339 Sq Ft
    • Built 2016

    Last Sold Summary

    • 12% Below List Price
    • $198/SF
    • 18 Days On Market

    Current Estimated Value $274,732

    Last Listing Agent Stacey Matsuda Bluefield Realty Group

    4 Robin Dr, Anderson, SC 29626
  • 302 Hemlock Ave, Anderson, SC 29625
    302 Hemlock Ave, Anderson, SC 29625
    302 Hemlock Ave, Anderson, SC 29625
    /35

    $215,000 Sold Sep 29, 2025

    302 Hemlock Ave, Anderson, SC 29625

    • 3 Beds
    • 1.5 Baths
    • 1,000+ Sq Ft
    • Built 1979

    Last Sold Summary

    • $215/SF
    • 78 Days On Market

    Current Estimated Value $212,789

    Last Listing Agent Whitney Ray Real Broker, LLC

    302 Hemlock Ave, Anderson, SC 29625
  • 209 Range View Rd, Anderson, SC 29626
    209 Range View Rd, Anderson, SC 29626
    209 Range View Rd, Anderson, SC 29626
    /27

    $205,000 Sold Jul 14, 2025

    209 Range View Rd, Anderson, SC 29626

    • 2 Beds
    • 1.5 Baths
    • 1,000+ Sq Ft

    Last Sold Summary

    • 2% Below List Price
    • $205/SF
    • 19 Days On Market

    Current Estimated Value $202,361

    Last Listing Agent Diane Naylor Keller Williams Seneca

    209 Range View Rd, Anderson, SC 29626
  • 817 Sharonwood Dr, Anderson, SC 29621
    817 Sharonwood Dr, Anderson, SC 29621
    817 Sharonwood Dr, Anderson, SC 29621
    /29

    $375,000 Sold May 19, 2025

    817 Sharonwood Dr, Anderson, SC 29621

    • 4 Beds
    • 2 Baths
    • 1,600+ Sq Ft

    Last Sold Summary

    • 1% Below List Price
    • $234/SF
    • 10 Days On Market

    Current Estimated Value $378,253

    Last Listing Agent Sergey Kisel Upstate Realty Brokers

    817 Sharonwood Dr, Anderson, SC 29621
  • 905 Northlake Dr, Anderson, SC 29625
    905 Northlake Dr, Anderson, SC 29625
    905 Northlake Dr, Anderson, SC 29625
    /48

    $170,000 Sold Oct 31, 2025

    905 Northlake Dr, Anderson, SC 29625

    • 3 Beds
    • 2 Baths
    • 1,298 Sq Ft
    • Built 1988

    Last Sold Summary

    • 6% Below List Price
    • $131/SF
    • 12 Days On Market

    Current Estimated Value $170,946

    Last Listing Agent At Home Associates BHHS C Dan Joyner - Anderson

    905 Northlake Dr, Anderson, SC 29625
  • 209 Tiger Lily Dr, Anderson, SC 29621
    209 Tiger Lily Dr, Anderson, SC 29621
    209 Tiger Lily Dr, Anderson, SC 29621
    /23

    $508,965 Sold Sep 10, 2025

    209 Tiger Lily Dr, Anderson, SC 29621

    • 4 Beds
    • 2.5 Baths
    • Built 2025

    Move in Ready Sold Summary

    • 13 Days On Market

    Hunter Quinn Homes The Meadows at Midway

    209 Tiger Lily Dr, Anderson, SC 29621
  • 215 Islay Way, Anderson, SC 29621
    215 Islay Way, Anderson, SC 29621
    215 Islay Way, Anderson, SC 29621
    /50

    $192,290 Sold Aug 01, 2025

    215 Islay Way, Anderson, SC 29621

    • 3 Beds
    • 2.5 Baths
    • 1,411 Sq Ft
    • Built 2025

    Move in Ready Sold Summary

    • $136/SF
    • 9 Days On Market

    McGuinn Homes Clarke Townes

    215 Islay Way, Anderson, SC 29621
  • 403 Crestcreek Dr, Anderson, SC 29621
    403 Crestcreek Dr, Anderson, SC 29621
    403 Crestcreek Dr, Anderson, SC 29621
    /23

    $304,990 Sold Oct 10, 2025

    403 Crestcreek Dr, Anderson, SC 29621

    • 3 Beds
    • 2.5 Baths
    • 2,265 Sq Ft
    • Built 2025

    Move in Ready Sold Summary

    • $135/SF
    • 5 Days On Market

    DRB Homes Village at Midway

    403 Crestcreek Dr, Anderson, SC 29621
  • 222 Leisure Ln, Anderson, SC 29621
    222 Leisure Ln, Anderson, SC 29621
    222 Leisure Ln, Anderson, SC 29621
    /23

    $304,990 Sold Sep 17, 2025

    222 Leisure Ln, Anderson, SC 29621

    • 3 Beds
    • 2.5 Baths
    • 2,278 Sq Ft
    • Built 2025

    Move in Ready Sold Summary

    • $134/SF
    • 49 Days On Market

    DRB Homes Village at Midway

    222 Leisure Ln, Anderson, SC 29621
  • 104 Patagonia Rd, Anderson, SC 29625
    104 Patagonia Rd, Anderson, SC 29625
    104 Patagonia Rd, Anderson, SC 29625
    /25

    $250,000 Sold May 30, 2025

    104 Patagonia Rd, Anderson, SC 29625

    • 3 Beds
    • 2.5 Baths
    • 1,400+ Sq Ft
    • Built 2019

    Last Sold Summary

    • 9% Below List Price
    • $179/SF
    • 167 Days On Market

    Current Estimated Value $260,896

    Last Listing Agent Santez Bowie Keller Williams DRIVE

    104 Patagonia Rd, Anderson, SC 29625
  • 126 Tanglewood Dr, Anderson, SC 29621
    126 Tanglewood Dr, Anderson, SC 29621
    126 Tanglewood Dr, Anderson, SC 29621
    /50

    $365,000 Sold Mar 06, 2025

    126 Tanglewood Dr, Anderson, SC 29621

    • 5 Beds
    • 3 Baths
    • 3,300 Sq Ft
    • Built 1977

    Last Sold Summary

    • $111/SF
    • 50 Days On Market

    Current Estimated Value $373,397

    Last Listing Agent Tina Brown BHHS C Dan Joyner - Anderson

    126 Tanglewood Dr, Anderson, SC 29621
  • 107 Cold Water Ln, Anderson, SC 29624
    107 Cold Water Ln, Anderson, SC 29624
    107 Cold Water Ln, Anderson, SC 29624
    /39

    $175,777 Sold Jun 17, 2025

    107 Cold Water Ln, Anderson, SC 29624

    • 1 Bed
    • 1 Bath
    • 512 Sq Ft
    • Built 2020

    Last Sold Summary

    • 1% Above List Price
    • $343/SF
    • 3 Days On Market

    Current Estimated Value $176,592

    Last Listing Agent Mya Brown Keller Williams DRIVE

    107 Cold Water Ln, Anderson, SC 29624
  • 501 Cromer Rd, Anderson, SC 29624
    501 Cromer Rd, Anderson, SC 29624
    501 Cromer Rd, Anderson, SC 29624
    /25

    $83,400 Sold Dec 18, 2025

    501 Cromer Rd, Anderson, SC 29624

    • 2 Beds
    • 1 Bath
    • 700+ Sq Ft

    Last Sold Summary

    • 24% Below List Price
    • $119/SF
    • 156 Days On Market

    Last Listing Agent Justin Bailey Century 21 Blackwell & Co. Rea

    501 Cromer Rd, Anderson, SC 29624
  • 3138 Lullwater Dr, Anderson, SC 29624
    3138 Lullwater Dr, Anderson, SC 29624
    3138 Lullwater Dr, Anderson, SC 29624
    /7

    $270,500 Sold Nov 26, 2025

    3138 Lullwater Dr, Anderson, SC 29624

    • 3 Beds
    • 2 Baths
    • 1,542 Sq Ft

    Last Sold Summary

    • $175/SF
    • 0 Days On Market

    Last Listing Agent Darlene Gould Access Realty, LLC

    3138 Lullwater Dr, Anderson, SC 29624
  • 231 Lookover Dr, Anderson, SC 29621
    231 Lookover Dr, Anderson, SC 29621
    231 Lookover Dr, Anderson, SC 29621
    /29

    $155,000 Sold Dec 19, 2025

    231 Lookover Dr, Anderson, SC 29621

    • 3 Beds
    • 2 Baths
    • 1,000+ Sq Ft
    • Built 2006

    Last Sold Summary

    • 6% Below List Price
    • $155/SF
    • 41 Days On Market

    Last Listing Agent Rachael Watson BHHS C Dan Joyner - Sptbg

    231 Lookover Dr, Anderson, SC 29621
  • 212 Wedgewood Dr, Anderson, SC 29621
    212 Wedgewood Dr, Anderson, SC 29621
    212 Wedgewood Dr, Anderson, SC 29621
    /36

    $487,900 Sold Apr 30, 2025

    212 Wedgewood Dr, Anderson, SC 29621

    • 4 Beds
    • 3.5 Baths
    • 2,528 Sq Ft
    • Built 2024

    Last Sold Summary

    • $193/SF
    • 49 Days On Market

    Current Estimated Value $500,254

    Last Listing Agent Johnny Pack Magnolia Rental Prop Management

    212 Wedgewood Dr, Anderson, SC 29621
  • 133 Cedar Rd, Anderson, SC 29624
    133 Cedar Rd, Anderson, SC 29624
    133 Cedar Rd, Anderson, SC 29624
    /36

    $235,000 Sold Dec 19, 2025

    133 Cedar Rd, Anderson, SC 29624

    • 3 Beds
    • 2 Baths
    • 1,650 Sq Ft
    • Built 1977

    Last Sold Summary

    • 2% Above List Price
    • $142/SF
    • 64 Days On Market

    Last Listing Agent Whitney Ray Real Broker, LLC

    133 Cedar Rd, Anderson, SC 29624
  • 719 Burdine Rd, Anderson, SC 29624
    719 Burdine Rd, Anderson, SC 29624
    719 Burdine Rd, Anderson, SC 29624
    /45

    $520,000 Sold Aug 12, 2025

    719 Burdine Rd, Anderson, SC 29624

    • 8 Beds
    • 4 Baths
    • 4,260 Sq Ft
    • Built 2003

    Last Sold Summary

    • 5% Below List Price
    • $122/SF
    • 99 Days On Market

    Last Listing Agent Michael Mcgreevey Herlong Sotheby's International Realty

    719 Burdine Rd, Anderson, SC 29624
  • 202 Woodoak Dr, Anderson, SC 29621
    202 Woodoak Dr, Anderson, SC 29621
    202 Woodoak Dr, Anderson, SC 29621
    /18

    $235,000 Sold Mar 13, 2025

    202 Woodoak Dr, Anderson, SC 29621

    • 3 Beds
    • 2 Baths
    • 1,800+ Sq Ft
    • Built 1978

    Last Sold Summary

    • 3% Above List Price
    • $131/SF
    • 3 Days On Market

    Current Estimated Value $255,486

    Last Listing Agent Heidi Putnam Coldwell Banker Caine/Williams

    202 Woodoak Dr, Anderson, SC 29621
  • 609 Wh Kay Ln, Anderson, SC 29621
    609 Wh Kay Ln, Anderson, SC 29621
    609 Wh Kay Ln, Anderson, SC 29621
    /40

    $478,000 Sold Mar 21, 2025

    609 Wh Kay Ln, Anderson, SC 29621

    • 4 Beds
    • 3.5 Baths
    • 2,600+ Sq Ft
    • Built 2024

    Last Sold Summary

    • 5% Above List Price
    • $184/SF
    • 30 Days On Market

    Last Listing Agent Chelsea Cathcart DRB Group South Carolina, LLC

    609 Wh Kay Ln, Anderson, SC 29621
  • 301 Elm Ave, Anderson, SC 29625
    301 Elm Ave, Anderson, SC 29625
    301 Elm Ave, Anderson, SC 29625
    /36

    $280,500 Sold Dec 15, 2025

    301 Elm Ave, Anderson, SC 29625

    • 3 Beds
    • 2 Baths
    • 1,400+ Sq Ft
    • Built 2025

    Last Sold Summary

    • 1% Above List Price
    • $200/SF
    • 46 Days On Market

    Last Listing Agent Tammy Woodbury eXp Realty - Clever People

    301 Elm Ave, Anderson, SC 29625
  • 115 Spanish Wells, Anderson, SC 29621
    115 Spanish Wells, Anderson, SC 29621
    115 Spanish Wells, Anderson, SC 29621
    /44

    $532,500 Sold Oct 28, 2025

    115 Spanish Wells, Anderson, SC 29621

    • 4 Beds
    • 2.5 Baths
    • 2,640 Sq Ft

    Last Sold Summary

    • 3% Below List Price
    • $202/SF
    • 43 Days On Market

    Current Estimated Value $532,348

    Last Listing Agent Tina Brown BHHS C Dan Joyner - Anderson

    115 Spanish Wells, Anderson, SC 29621
  • 209 Islay Way, Anderson, SC 29621
    209 Islay Way, Anderson, SC 29621
    209 Islay Way, Anderson, SC 29621
    /26

    $183,240 Sold Jan 30, 2026

    209 Islay Way, Anderson, SC 29621

    • 3 Beds
    • 2.5 Baths
    • 1,305 Sq Ft
    • Built 2026

    Move in Ready Sold Summary

    • $140/SF
    • 43 Days On Market

    McGuinn Homes Clarke Townes

    209 Islay Way, Anderson, SC 29621
  • 107 Lowland Dr, Anderson, SC 29621
    107 Lowland Dr, Anderson, SC 29621
    107 Lowland Dr, Anderson, SC 29621
    /20

    $178,290 Sold Oct 31, 2025

    107 Lowland Dr, Anderson, SC 29621

    • 3 Beds
    • 2.5 Baths
    • 1,200+ Sq Ft
    • Built 2025

    Last Sold Summary

    • 11% Below List Price
    • $149/SF
    • 128 Days On Market

    Current Estimated Value $933,207

    Last Listing Agent Cade Gentry McGuinn Homes

    107 Lowland Dr, Anderson, SC 29621
  • 405 Fairfax St, Anderson, SC 29625
    405 Fairfax St, Anderson, SC 29625
    405 Fairfax St, Anderson, SC 29625
    /32

    $245,000 Sold Jan 09, 2026

    405 Fairfax St, Anderson, SC 29625

    • 3 Beds
    • 2.5 Baths
    • 1,600+ Sq Ft
    • Built 2022

    Last Sold Summary

    • 6% Below List Price
    • $153/SF
    • 96 Days On Market

    Last Listing Agent Hunter Hurst Keller Williams Grv Upst

    405 Fairfax St, Anderson, SC 29625
  • 2106 Woodside Ave, Anderson, SC 29625
    2106 Woodside Ave, Anderson, SC 29625
    2106 Woodside Ave, Anderson, SC 29625
    /41

    $230,000 Sold May 09, 2025

    2106 Woodside Ave, Anderson, SC 29625

    • 3 Beds
    • 2 Baths
    • 1,400+ Sq Ft
    • Built 1944

    Last Sold Summary

    • 2% Above List Price
    • $164/SF
    • 2 Days On Market

    Current Estimated Value $231,667

    Last Listing Agent Tammy Woodbury eXp Realty - Clever People

    2106 Woodside Ave, Anderson, SC 29625
  • 406 Hunters Ln, Anderson, SC 29625
    406 Hunters Ln, Anderson, SC 29625
    406 Hunters Ln, Anderson, SC 29625
    /32

    $297,000 Sold May 01, 2025

    406 Hunters Ln, Anderson, SC 29625

    • 4 Beds
    • 2.5 Baths
    • 1,600+ Sq Ft
    • Built 2000

    Last Sold Summary

    • 3% Below List Price
    • $186/SF
    • 11 Days On Market

    Current Estimated Value $297,636

    Last Listing Agent Melissa Powell Allen Tate/Pine To Palm Realty

    406 Hunters Ln, Anderson, SC 29625
  • 301 Newton Ln, Anderson, SC 29624
    301 Newton Ln, Anderson, SC 29624
    301 Newton Ln, Anderson, SC 29624
    /36

    $167,000 Sold Sep 30, 2025

    301 Newton Ln, Anderson, SC 29624

    • 2 Beds
    • 1.5 Baths
    • 1,108 Sq Ft

    Last Sold Summary

    • 7% Below List Price
    • $151/SF
    • 58 Days On Market

    Current Estimated Value $166,859

    Last Listing Agent Hannah Hart Casey Group Real Estate - Anderson

    301 Newton Ln, Anderson, SC 29624
  • 246 Sam McGee Rd, Anderson, SC 29621
    246 Sam McGee Rd, Anderson, SC 29621
    246 Sam McGee Rd, Anderson, SC 29621
    /34

    $265,500 Sold Mar 24, 2025

    246 Sam McGee Rd, Anderson, SC 29621

    • 3 Beds
    • 2 Baths
    • 2,131 Sq Ft

    Last Sold Summary

    • 2% Below List Price
    • $125/SF
    • 74 Days On Market

    Current Estimated Value $295,637

    Last Listing Agent Claude Turpin Adly Group Realty

    246 Sam McGee Rd, Anderson, SC 29621
  • 410 Holly Ridge Dr, Anderson, SC 29621
    410 Holly Ridge Dr, Anderson, SC 29621
    410 Holly Ridge Dr, Anderson, SC 29621
    /46

    $580,000 Sold Jan 23, 2026

    410 Holly Ridge Dr, Anderson, SC 29621

    • 3 Beds
    • 2.5 Baths
    • 2,200+ Sq Ft
    • Built 2025

    Last Sold Summary

    • $264/SF
    • 10 Days On Market

    Last Listing Agent Tammy Woodbury eXp Realty - Clever People

    410 Holly Ridge Dr, Anderson, SC 29621
  • 1238 Ramona Dr, Belton, SC 29627
    1238 Ramona Dr, Belton, SC 29627
    1238 Ramona Dr, Belton, SC 29627
    /45

    $267,500 Sold May 29, 2025

    1238 Ramona Dr, Belton, SC 29627

    • 3 Beds
    • 2 Baths
    • 1,200+ Sq Ft
    • Built 1980

    Last Sold Summary

    • 1% Above List Price
    • $223/SF
    • 31 Days On Market

    Current Estimated Value $267,905

    Last Listing Agent Janet Cartee Keller Williams Seneca

    1238 Ramona Dr, Belton, SC 29627
  • 205 Pine Bark Rd, Anderson, SC 29625
    205 Pine Bark Rd, Anderson, SC 29625
    205 Pine Bark Rd, Anderson, SC 29625
    /50

    $257,900 Sold Nov 20, 2025

    205 Pine Bark Rd, Anderson, SC 29625

    • 3 Beds
    • 2 Baths
    • 2,000+ Sq Ft
    • Built 1974

    Last Sold Summary

    • $129/SF
    • 10 Days On Market

    Last Listing Agent Christy Ellington Bluefield Realty Group

    205 Pine Bark Rd, Anderson, SC 29625
  • 313 Hugh St, Anderson, SC 29624
    313 Hugh St, Anderson, SC 29624
    313 Hugh St, Anderson, SC 29624
    /24

    $120,000 Sold Dec 15, 2025

    313 Hugh St, Anderson, SC 29624

    • 2 Beds
    • 1 Bath
    • 700+ Sq Ft

    Last Sold Summary

    • 11% Below List Price
    • $171/SF
    • 128 Days On Market

    Last Listing Agent Jon Ferguson Keller Williams Greenville Central

    313 Hugh St, Anderson, SC 29624

Showing Results 601 - 640, Page 16 of 18

South Carolina Anderson County Sandy Springs

Recently Sold Real Estate & Homes in Sandy Springs, SC

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