4,989

Sugar Grove, IL Homes

Section Image
    • 26 Rolling Oaks Rd Unit C, Sugar Grove, IL 60554
      26 Rolling Oaks Rd Unit C, Sugar Grove, IL 60554
      26 Rolling Oaks Rd Unit C, Sugar Grove, IL 60554
      /23

      Est $286,440

      Not Listed For Sale

      26 Rolling Oaks Rd Unit C, Sugar Grove, IL 60554

      • 3 Beds
      • 1.5 Baths
      • 1,466 Sq Ft
      • Built 2004
      26 Rolling Oaks Rd Unit C, Sugar Grove, IL 60554

      Last Sold Summary

      • 28 Days On Market

      Last Listing Agent Calvin Wilson eXp Realty

    • 1218 Mariemont Rd Unit A, Sugar Grove, IL 60554
      1218 Mariemont Rd Unit A, Sugar Grove, IL 60554
      1218 Mariemont Rd Unit A, Sugar Grove, IL 60554
      /34

      Est $312,007

      Not Listed For Sale

      1218 Mariemont Rd Unit A, Sugar Grove, IL 60554

      • 3 Beds
      • 2.5 Baths
      • 1,773 Sq Ft
      • Built 2006
      1218 Mariemont Rd Unit A, Sugar Grove, IL 60554

      Last Sold Summary

      • 12 Days On Market

      Last Listing Agent Kathy Barkei Fox Valley Real Estate

    • 1240 Mariemont Rd Unit C, Sugar Grove, IL 60554
      1240 Mariemont Rd Unit C, Sugar Grove, IL 60554
      1240 Mariemont Rd Unit C, Sugar Grove, IL 60554
      /21

      Est $297,045

      Not Listed For Sale

      1240 Mariemont Rd Unit C, Sugar Grove, IL 60554

      • 2 Beds
      • 2.5 Baths
      • 1,441 Sq Ft
      • Built 2006
      1240 Mariemont Rd Unit C, Sugar Grove, IL 60554

      Last Sold Summary

      • 12 Days On Market

      Last Listing Agent James Hard Century 21 Circle

    • 1218 Mariemont Rd Unit C, Sugar Grove, IL 60554
      1218 Mariemont Rd Unit C, Sugar Grove, IL 60554
      1218 Mariemont Rd Unit C, Sugar Grove, IL 60554
      /25

      Est $268,657

      Not Listed For Sale

      1218 Mariemont Rd Unit C, Sugar Grove, IL 60554

      • 2 Beds
      • 2.5 Baths
      • 1,441 Sq Ft
      • Built 2007
      1218 Mariemont Rd Unit C, Sugar Grove, IL 60554

      Last Sold Summary

      • 66 Days On Market

      Last Listing Agent John Gamble Real Broker LLC

    • 42 Meadows Dr, Sugar Grove, IL 60554
      42 Meadows Dr, Sugar Grove, IL 60554
      42 Meadows Dr, Sugar Grove, IL 60554
      /16

      Est $324,752

      Not Listed For Sale

      42 Meadows Dr, Sugar Grove, IL 60554

      • 4 Beds
      • 3 Baths
      • 1,274 Sq Ft
      • Built 1987
      42 Meadows Dr, Sugar Grove, IL 60554

      Last Sold Summary

      • 7 Days On Market

      Last Listing Agent Traci Kearns eXp Realty

    • 225 Maple St, Sugar Grove, IL 60554
      225 Maple St, Sugar Grove, IL 60554
      /2

      Est $347,472

      Not Listed For Sale

      225 Maple St, Sugar Grove, IL 60554

      • 3 Beds
      • 1.5 Baths
      • 1,247 Sq Ft
      • Built 1970
      225 Maple St, Sugar Grove, IL 60554

      Last Sold Summary

      • 1 Day On Market

      Last Listing Agent Rose Pagonis Keller Williams Infinity

    • 233 Bastian Dr, Sugar Grove, IL 60554
      233 Bastian Dr, Sugar Grove, IL 60554
      233 Bastian Dr, Sugar Grove, IL 60554
      /24

      Est $389,633

      Not Listed For Sale

      233 Bastian Dr, Sugar Grove, IL 60554

      • 3 Beds
      • 2 Baths
      • 1,150 Sq Ft
      • Built 1989
      233 Bastian Dr, Sugar Grove, IL 60554

      Last Sold Summary

      • 4 Days On Market

      Last Listing Agent Mike Berg Berg Properties

    • 249 Bastian Dr, Sugar Grove, IL 60554
      249 Bastian Dr, Sugar Grove, IL 60554
      249 Bastian Dr, Sugar Grove, IL 60554
      /5

      Est $391,863

      Not Listed For Sale

      249 Bastian Dr, Sugar Grove, IL 60554

      • 4 Beds
      • 2.5 Baths
      • 2,100 Sq Ft
      • Built 1991
      249 Bastian Dr, Sugar Grove, IL 60554

      Last Sold Summary

      • 3 Days On Market

      Last Listing Agent George Tai Kale Realty

    • 365 Meadows Dr, Sugar Grove, IL 60554
      365 Meadows Dr, Sugar Grove, IL 60554
      365 Meadows Dr, Sugar Grove, IL 60554
      /42

      Est $385,617

      Not Listed For Sale

      365 Meadows Dr, Sugar Grove, IL 60554

      • 3 Beds
      • 4 Baths
      • 1,712 Sq Ft
      • Built 1991
      365 Meadows Dr, Sugar Grove, IL 60554

      Last Sold Summary

      • 8 Days On Market

      Last Listing Agent Denis Horgan Redfin Corporation

    • 1887 Fays Ln, Sugar Grove, IL 60554
      1887 Fays Ln, Sugar Grove, IL 60554
      1887 Fays Ln, Sugar Grove, IL 60554
      /17

      Est $402,057

      Not Listed For Sale

      1887 Fays Ln, Sugar Grove, IL 60554

      • 3 Beds
      • 2 Baths
      • 1,700 Sq Ft
      • Built 1981
      1887 Fays Ln, Sugar Grove, IL 60554

      Last Sold Summary

      • 25 Days On Market

      Last Listing Agent Sarah Baxa Coldwell Banker Real Estate Group

    • 749 Carriage Hill Ln, Sugar Grove, IL 60554
      749 Carriage Hill Ln, Sugar Grove, IL 60554
      749 Carriage Hill Ln, Sugar Grove, IL 60554
      /27

      Est $432,195

      Not Listed For Sale

      749 Carriage Hill Ln, Sugar Grove, IL 60554

      • 3 Beds
      • 2 Baths
      • 1,760 Sq Ft
      • Built 1988
      749 Carriage Hill Ln, Sugar Grove, IL 60554

      Last Sold Summary

      • 6 Days On Market

      Last Listing Agent Jason Sudaz Firehomes

    • 757 Carriage Hill Ln, Sugar Grove, IL 60554
      757 Carriage Hill Ln, Sugar Grove, IL 60554
      757 Carriage Hill Ln, Sugar Grove, IL 60554
      /36

      Est $459,915

      Not Listed For Sale

      757 Carriage Hill Ln, Sugar Grove, IL 60554

      • 3 Beds
      • 2.5 Baths
      • 2,851 Sq Ft
      • Built 1985
      757 Carriage Hill Ln, Sugar Grove, IL 60554

      Last Sold Summary

      • 31 Days On Market

      Last Listing Agent Michael Greutman Coldwell Banker Real Estate Group

    • 171 Brompton Ln Unit A, Sugar Grove, IL 60554
      171 Brompton Ln Unit A, Sugar Grove, IL 60554
      171 Brompton Ln Unit A, Sugar Grove, IL 60554
      /19

      Est $279,603

      Not Listed For Sale

      171 Brompton Ln Unit A, Sugar Grove, IL 60554

      • 2 Beds
      • 2.5 Baths
      • 1,463 Sq Ft
      • Built 2001
      171 Brompton Ln Unit A, Sugar Grove, IL 60554

      Last Sold Summary

      • 8 Days On Market

      Last Listing Agent Sarah Goss Southwestern Real Estate, Inc.

    • 230 Brompton Ln Unit B, Sugar Grove, IL 60554
      230 Brompton Ln Unit B, Sugar Grove, IL 60554
      230 Brompton Ln Unit B, Sugar Grove, IL 60554
      /34

      Est $340,091

      Not Listed For Sale

      230 Brompton Ln Unit B, Sugar Grove, IL 60554

      • 3 Beds
      • 2.5 Baths
      • 1,850 Sq Ft
      • Built 2002
      230 Brompton Ln Unit B, Sugar Grove, IL 60554

      Last Sold Summary

      • 54 Days On Market

      Last Listing Agent William Finfrock Redfin Corporation

    • 220 Brompton Ln Unit A, Sugar Grove, IL 60554
      220 Brompton Ln Unit A, Sugar Grove, IL 60554
      220 Brompton Ln Unit A, Sugar Grove, IL 60554
      /19

      Est $312,573

      Not Listed For Sale

      220 Brompton Ln Unit A, Sugar Grove, IL 60554

      • 2 Beds
      • 2.5 Baths
      • 1,650 Sq Ft
      • Built 2001
      220 Brompton Ln Unit A, Sugar Grove, IL 60554

      Last Sold Summary

      • 2 Days On Market

      Last Listing Agent Paul Titterington Platinum Partners Realtors

    • 209 Belle Vue Ct Unit A, Sugar Grove, IL 60554
      209 Belle Vue Ct Unit A, Sugar Grove, IL 60554
      209 Belle Vue Ct Unit A, Sugar Grove, IL 60554
      /28

      Est $297,714

      Not Listed For Sale

      209 Belle Vue Ct Unit A, Sugar Grove, IL 60554

      • 2 Beds
      • 2.5 Baths
      • 1,615 Sq Ft
      • Built 2003
      209 Belle Vue Ct Unit A, Sugar Grove, IL 60554

      Last Sold Summary

      • 22 Days On Market

      Last Listing Agent Sue Wiskowski-Fair Realty Executives Success

    • 284 Whitfield Dr Unit A, Sugar Grove, IL 60554
      284 Whitfield Dr Unit A, Sugar Grove, IL 60554
      284 Whitfield Dr Unit A, Sugar Grove, IL 60554
      /29

      Est $285,705

      Not Listed For Sale

      284 Whitfield Dr Unit A, Sugar Grove, IL 60554

      • 2 Beds
      • 2.5 Baths
      • 1,615 Sq Ft
      • Built 2004
      284 Whitfield Dr Unit A, Sugar Grove, IL 60554

      Last Sold Summary

      • 12 Days On Market

      Last Listing Agent Pamela Raver eXp Realty - Geneva

    • 160 E Park Ave Unit B, Sugar Grove, IL 60554
      160 E Park Ave Unit B, Sugar Grove, IL 60554
      160 E Park Ave Unit B, Sugar Grove, IL 60554
      /32

      Est $330,035

      Not Listed For Sale

      160 E Park Ave Unit B, Sugar Grove, IL 60554

      • 3 Beds
      • 2.5 Baths
      • 1,806 Sq Ft
      • Built 2001
      160 E Park Ave Unit B, Sugar Grove, IL 60554

      Last Sold Summary

      • 1 Day On Market

      Last Listing Agent Rick Cortopassi HomeSmart Connect LLC

    • 261 Capitol Dr Unit C, Sugar Grove, IL 60554
      261 Capitol Dr Unit C, Sugar Grove, IL 60554
      261 Capitol Dr Unit C, Sugar Grove, IL 60554
      /29

      Est $306,579

      Not Listed For Sale

      261 Capitol Dr Unit C, Sugar Grove, IL 60554

      • 3 Beds
      • 2.5 Baths
      • 1,620 Sq Ft
      • Built 2002
      261 Capitol Dr Unit C, Sugar Grove, IL 60554

      Last Sold Summary

      • 63 Days On Market

      Last Listing Agent Malgorzata Wasik arhome realty

    • 22 Cedar Gate Cir, Sugar Grove, IL 60554
      22 Cedar Gate Cir, Sugar Grove, IL 60554
      22 Cedar Gate Cir, Sugar Grove, IL 60554
      /35

      Est $425,845

      Not Listed For Sale

      22 Cedar Gate Cir, Sugar Grove, IL 60554

      • 4 Beds
      • 2.5 Baths
      • 2,713 Sq Ft
      • Built 1979
      22 Cedar Gate Cir, Sugar Grove, IL 60554

      Last Sold Summary

      • 16 Days On Market

      Last Listing Agent Linda Hoss Keller Williams Innovate - Aurora

    • 31 E Windsor Ct, Sugar Grove, IL 60554
      31 E Windsor Ct, Sugar Grove, IL 60554
      31 E Windsor Ct, Sugar Grove, IL 60554
      /37

      Est $353,970

      Not Listed For Sale

      31 E Windsor Ct, Sugar Grove, IL 60554

      • 2 Beds
      • 2.5 Baths
      • 1,330 Sq Ft
      • Built 1973
      31 E Windsor Ct, Sugar Grove, IL 60554

      Last Sold Summary

      • 5 Days On Market

      Last Listing Agent Sarah Goss Southwestern Real Estate, Inc.

    • 9 Cedar Gate Cir Unit 4, Sugar Grove, IL 60554
      9 Cedar Gate Cir Unit 4, Sugar Grove, IL 60554
      9 Cedar Gate Cir Unit 4, Sugar Grove, IL 60554
      /31

      Est $445,383

      Not Listed For Sale

      9 Cedar Gate Cir Unit 4, Sugar Grove, IL 60554

      • 4 Beds
      • 2.5 Baths
      • 2,284 Sq Ft
      • Built 1974
      9 Cedar Gate Cir Unit 4, Sugar Grove, IL 60554

      Last Sold Summary

      • 9 Days On Market

      Last Listing Agent Kathy Brothers Keller Williams Innovate - Aurora

    • 11 Fernilee Ct, Sugar Grove, IL 60554
      11 Fernilee Ct, Sugar Grove, IL 60554
      11 Fernilee Ct, Sugar Grove, IL 60554
      /44

      Est $557,153

      Not Listed For Sale

      11 Fernilee Ct, Sugar Grove, IL 60554

      • 5 Beds
      • 5 Baths
      • 3,386 Sq Ft
      • Built 1977
      11 Fernilee Ct, Sugar Grove, IL 60554

      Last Sold Summary

      • 10 Days On Market

      Last Listing Agent Linda Pilmer Pilmer Real Estate, Inc

    • 5 Hatherly Ct, Sugar Grove, IL 60554
      5 Hatherly Ct, Sugar Grove, IL 60554
      5 Hatherly Ct, Sugar Grove, IL 60554
      /39

      Est $480,558

      Not Listed For Sale

      5 Hatherly Ct, Sugar Grove, IL 60554

      • 3 Beds
      • 2.5 Baths
      • 1,989 Sq Ft
      • Built 1966
      5 Hatherly Ct, Sugar Grove, IL 60554

      Last Sold Summary

      • 15 Days On Market

      Last Listing Agent Cynthia Miller eXp Realty - Geneva

    • 24 Winthrop New Rd, Sugar Grove, IL 60554
      24 Winthrop New Rd, Sugar Grove, IL 60554
      24 Winthrop New Rd, Sugar Grove, IL 60554
      /31

      Est $438,538

      Not Listed For Sale

      24 Winthrop New Rd, Sugar Grove, IL 60554

      • 4 Beds
      • 3 Baths
      • 5,637 Sq Ft
      • Built 1972
      24 Winthrop New Rd, Sugar Grove, IL 60554

      Last Sold Summary

      • 3 Days On Market

      Last Listing Agent Stana Vukajlovic Compass

    • 3 Glengarry Ln, Sugar Grove, IL 60554
      3 Glengarry Ln, Sugar Grove, IL 60554
      3 Glengarry Ln, Sugar Grove, IL 60554
      /31

      Est $429,506

      Not Listed For Sale

      3 Glengarry Ln, Sugar Grove, IL 60554

      • 2 Beds
      • 2.5 Baths
      • 1,818 Sq Ft
      • Built 1994
      3 Glengarry Ln, Sugar Grove, IL 60554

      Last Sold Summary

      • 94 Days On Market

      Last Listing Agent Sarah Goss Southwestern Real Estate, Inc.

    • 13 Hillcrest Dr, Sugar Grove, IL 60554
      13 Hillcrest Dr, Sugar Grove, IL 60554
      13 Hillcrest Dr, Sugar Grove, IL 60554
      /25

      Est $415,944

      Not Listed For Sale

      13 Hillcrest Dr, Sugar Grove, IL 60554

      • 2 Beds
      • 2 Baths
      • 1,808 Sq Ft
      • Built 1987
      13 Hillcrest Dr, Sugar Grove, IL 60554

      Last Sold Summary

      • 14 Days On Market

      Last Listing Agent Linda Hoss Keller Williams Innovate - Aurora

    • 19 Penny Ln, Sugar Grove, IL 60554
      19 Penny Ln, Sugar Grove, IL 60554
      19 Penny Ln, Sugar Grove, IL 60554
      /29

      Est $426,630

      Not Listed For Sale

      19 Penny Ln, Sugar Grove, IL 60554

      • 2 Beds
      • 3 Baths
      • 1,788 Sq Ft
      • Built 1993
      19 Penny Ln, Sugar Grove, IL 60554

      Last Sold Summary

      • 46 Days On Market

      Last Listing Agent Sarah Goss Southwestern Real Estate, Inc.

    • 15 Penny Ln, Sugar Grove, IL 60554
      15 Penny Ln, Sugar Grove, IL 60554
      15 Penny Ln, Sugar Grove, IL 60554
      /26

      Est $423,603

      Not Listed For Sale

      15 Penny Ln, Sugar Grove, IL 60554

      • 2 Beds
      • 3 Baths
      • 2,051 Sq Ft
      • Built 1991
      15 Penny Ln, Sugar Grove, IL 60554

      Last Sold Summary

      • 3 Days On Market

      Last Listing Agent Marie Bergman Coldwell Banker Realty

    • 329 Normandie Dr, Sugar Grove, IL 60554
      329 Normandie Dr, Sugar Grove, IL 60554
      329 Normandie Dr, Sugar Grove, IL 60554
      /8

      Est $380,024

      Not Listed For Sale

      329 Normandie Dr, Sugar Grove, IL 60554

      • 2 Beds
      • 3 Baths
      • 1,361 Sq Ft
      • Built 2001
      329 Normandie Dr, Sugar Grove, IL 60554

      Last Sold Summary

      Last Listing Agent Lisa Wolf Keller Williams North Shore West

    • 12 Briargate Cir, Sugar Grove, IL 60554
      12 Briargate Cir, Sugar Grove, IL 60554
      12 Briargate Cir, Sugar Grove, IL 60554
      /46

      Est $440,777

      Not Listed For Sale

      12 Briargate Cir, Sugar Grove, IL 60554

      • 4 Beds
      • 2.5 Baths
      • 2,600 Sq Ft
      • Built 1979
      12 Briargate Cir, Sugar Grove, IL 60554

      Last Sold Summary

      • 66 Days On Market

      Last Listing Agent Katherine Kautz Century 21 Circle - Aurora

    • 5S825 Route 47, Sugar Grove, IL 60554
      5S825 Route 47, Sugar Grove, IL 60554
      5S825 Route 47, Sugar Grove, IL 60554
      /40

      Est $480,679

      Not Listed For Sale

      5S825 Route 47, Sugar Grove, IL 60554

      • 4 Beds
      • 2.5 Baths
      • 2,808 Sq Ft
      • Built 1959
      5S825 Route 47, Sugar Grove, IL 60554

      Last Sold Summary

      • 103 Days On Market

      Last Listing Agent Melissa Garcia Legacy Properties, A Sarah Leonard Company, LLC

    • 446 Courtney Cir, Sugar Grove, IL 60554
      446 Courtney Cir, Sugar Grove, IL 60554
      446 Courtney Cir, Sugar Grove, IL 60554
      /48

      Est $1,156,596

      Not Listed For Sale

      446 Courtney Cir, Sugar Grove, IL 60554

      • 6 Beds
      • 6.5 Baths
      • 7,523 Sq Ft
      • Built 2001
      446 Courtney Cir, Sugar Grove, IL 60554

      Last Sold Summary

      • 238 Days On Market

      Last Listing Agent Kari Kohler Coldwell Banker Realty

    • 4S064 Hazelcrest Dr, Sugar Grove, IL 60554
      4S064 Hazelcrest Dr, Sugar Grove, IL 60554
      4S064 Hazelcrest Dr, Sugar Grove, IL 60554
      /41

      Est $524,642

      Not Listed For Sale

      4S064 Hazelcrest Dr, Sugar Grove, IL 60554

      • 4 Beds
      • 2.5 Baths
      • 2,400 Sq Ft
      • Built 1988
      4S064 Hazelcrest Dr, Sugar Grove, IL 60554

      Last Sold Summary

      • 3 Days On Market

      Last Listing Agent Jeffrey M Jordan RE/MAX All Pro - St Charles

    • 44W204 Pembroke Ct, Sugar Grove, IL 60554
      44W204 Pembroke Ct, Sugar Grove, IL 60554
      44W204 Pembroke Ct, Sugar Grove, IL 60554
      /30

      Est $462,273

      Not Listed For Sale

      44W204 Pembroke Ct, Sugar Grove, IL 60554

      • 3 Beds
      • 2 Baths
      • 2,066 Sq Ft
      • Built 1976
      44W204 Pembroke Ct, Sugar Grove, IL 60554

      Last Sold Summary

      • 5 Days On Market

      Last Listing Agent Diane Oros Pilmer Real Estate, Inc

    • 43W501 Scott Rd, Sugar Grove, IL 60554
      43W501 Scott Rd, Sugar Grove, IL 60554
      43W501 Scott Rd, Sugar Grove, IL 60554
      /42

      Est $477,848

      Not Listed For Sale

      43W501 Scott Rd, Sugar Grove, IL 60554

      • 4 Beds
      • 3.5 Baths
      • 2,464 Sq Ft
      • Built 1983
      43W501 Scott Rd, Sugar Grove, IL 60554

      Last Sold Summary

      • 24 Days On Market

      Last Listing Agent Melissa Garcia Legacy Properties, A Sarah Leonard Company, LLC

    • 43W705 Marian Cir N, Sugar Grove, IL 60554
      43W705 Marian Cir N, Sugar Grove, IL 60554
      43W705 Marian Cir N, Sugar Grove, IL 60554
      /39

      Est $350,791

      Not Listed For Sale

      43W705 Marian Cir N, Sugar Grove, IL 60554

      • 3 Beds
      • 2 Baths
      • 1,236 Sq Ft
      • Built 1968
      43W705 Marian Cir N, Sugar Grove, IL 60554

      Last Sold Summary

      • 19 Days On Market

      Last Listing Agent Lucy Mullarkey RE/MAX All Pro - St Charles

    • 145 Diana Dr, Sugar Grove, IL 60554
      145 Diana Dr, Sugar Grove, IL 60554
      145 Diana Dr, Sugar Grove, IL 60554
      /14

      Est $467,986

      Not Listed For Sale

      145 Diana Dr, Sugar Grove, IL 60554

      • 3 Beds
      • 2.5 Baths
      • 2,077 Sq Ft
      145 Diana Dr, Sugar Grove, IL 60554

      Last Sold Summary

      • 14 Days On Market

    • 200 St James Pkwy, Sugar Grove, IL 60554
      200 St James Pkwy, Sugar Grove, IL 60554
      200 St James Pkwy, Sugar Grove, IL 60554
      /11

      Not Listed For Sale

      200 St James Pkwy, Sugar Grove, IL 60554

      • 3 Beds
      • 2.5 Baths
      • 1,805 Sq Ft
      • Built 2000
      200 St James Pkwy, Sugar Grove, IL 60554

      Last Sold Summary

      • 4 Days On Market

      Last Listing Agent John Ruettiger Coldwell Banker Realty

    • 204 Galena St, Sugar Grove, IL 60554
      204 Galena St, Sugar Grove, IL 60554
      204 Galena St, Sugar Grove, IL 60554
      /22

      Est $288,872

      Not Listed For Sale

      204 Galena St, Sugar Grove, IL 60554

      • 2 Beds
      • 1 Bath
      • 1,390 Sq Ft
      • Built 1900
      204 Galena St, Sugar Grove, IL 60554

      Last Sold Summary

      • 29 Days On Market

      Last Listing Agent Tara Eberly Swanson Real Estate

Showing Results 561 - 600, Page 15 of 18

Illinois Kane 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