880

Waldron, IN Homes

Section Image
    • 307 S Mulberry St, Waldron, IN 46182
      307 S Mulberry St, Waldron, IN 46182
      307 S Mulberry St, Waldron, IN 46182
      /20

      Est $268,041 Not Listed For Sale

      307 S Mulberry St, Waldron, IN 46182

      • 3 Beds
      • 2.5 Baths
      • 2,273 Sq Ft
      • Built 1920
      307 S Mulberry St, Waldron, IN 46182

      Last Sold Summary

      • 12% Below List Price
      • $134/SF
      • 55 Days On Market

      Last Sold Price $305,000

      Last Listing Agent Sarah George Runnebohm Realty, LLC

    • 201 E Pullman St, Waldron, IN 46182
      201 E Pullman St, Waldron, IN 46182
      201 E Pullman St, Waldron, IN 46182
      /18

      Not Listed For Sale

      201 E Pullman St, Waldron, IN 46182

      • 3 Beds
      • 1 Bath
      • 1,545 Sq Ft
      • Built 1920
      201 E Pullman St, Waldron, IN 46182

      Last Sold Summary

      • 10% Below List Price
      • $94/SF
      • 253 Days On Market

      Last Sold Price $145,000

      Last Listing Agent Kelly Wood RE/MAX At The Crossing

    • 705 E Pearl St, Waldron, IN 46182
      705 E Pearl St, Waldron, IN 46182
      705 E Pearl St, Waldron, IN 46182
      /4

      Est $149,453 Not Listed For Sale

      705 E Pearl St, Waldron, IN 46182

      • 3 Beds
      • 1 Bath
      • 1,240 Sq Ft
      • Built 1940
      705 E Pearl St, Waldron, IN 46182

      Last Sold Summary

      • 3% Above List Price
      • $117/SF
      • 0 Days On Market

      Last Sold Price $145,000

      Last Listing Agent Laurin Smith Lincoln Realty, Inc.

    • 208 W Washington St, Waldron, IN 46182
      208 W Washington St, Waldron, IN 46182
      208 W Washington St, Waldron, IN 46182
      /38

      Est $136,851 Not Listed For Sale

      208 W Washington St, Waldron, IN 46182

      • 2 Beds
      • 1.5 Baths
      • 1,266 Sq Ft
      • Built 1920
      208 W Washington St, Waldron, IN 46182

      Last Sold Summary

      • 9% Above List Price
      • $99/SF
      • 25 Days On Market

      Last Sold Price $125,000

      Last Listing Agent Cassandra Chandler-Dues ELEVATED Homes and Properties

    • 207 Elm St, Waldron, IN 46182
      207 Elm St, Waldron, IN 46182
      207 Elm St, Waldron, IN 46182
      /35

      Est $241,078 Not Listed For Sale

      207 Elm St, Waldron, IN 46182

      • 4 Beds
      • 2 Baths
      • 1,712 Sq Ft
      • Built 1956
      207 Elm St, Waldron, IN 46182

      Last Sold Summary

      • 2% Below List Price
      • $143/SF
      • 32 Days On Market

      Last Sold Price $245,000

      Last Listing Agent Christie McLaughlin Maximum Results Real Estate

    • 405 W Pearl St, Waldron, IN 46182
      405 W Pearl St, Waldron, IN 46182
      405 W Pearl St, Waldron, IN 46182
      /11

      Est $146,730 Not Listed For Sale

      405 W Pearl St, Waldron, IN 46182

      • 2 Beds
      • 1 Bath
      • 780 Sq Ft
      • Built 1920
      405 W Pearl St, Waldron, IN 46182

      Last Sold Summary

      • 2% Below List Price
      • $192/SF
      • 70 Days On Market

      Last Sold Price $149,500

      Last Listing Agent Alicia Barr HIGH BARR Real Estate, LLC

    • 304 W Washington St, Waldron, IN 46182
      304 W Washington St, Waldron, IN 46182
      304 W Washington St, Waldron, IN 46182
      /35

      Est $297,693 Not Listed For Sale

      304 W Washington St, Waldron, IN 46182

      • 3 Beds
      • 2.5 Baths
      • 1,635 Sq Ft
      • Built 1948
      304 W Washington St, Waldron, IN 46182

      Last Sold Summary

      • 10% Above List Price
      • $165/SF
      • 65 Days On Market

      Last Sold Price $270,000

      Last Listing Agent Sarah George Runnebohm Realty, LLC

    • 7826 S 300 E, Waldron, IN 46182
      7826 S 300 E, Waldron, IN 46182
      7826 S 300 E, Waldron, IN 46182
      /50

      Est $324,981 Not Listed For Sale

      7826 S 300 E, Waldron, IN 46182

      • 3 Beds
      • 1.5 Baths
      • 2,420 Sq Ft
      • Built 1888
      7826 S 300 E, Waldron, IN 46182

      Last Sold Summary

      • $134/SF
      • 3 Days On Market

      Last Sold Price $325,000

      Last Listing Agent Tyler Hankins Keller Williams Indy Metro Sou

    • 785 S 775 E, Waldron, IN 46182
      785 S 775 E, Waldron, IN 46182
      785 S 775 E, Waldron, IN 46182
      /44

      Est $477,478 Not Listed For Sale

      785 S 775 E, Waldron, IN 46182

      • 3 Beds
      • 1.5 Baths
      • 2,802 Sq Ft
      • Built 1890
      785 S 775 E, Waldron, IN 46182

      Last Sold Summary

      • 22% Above List Price
      • $139/SF
      • 104 Days On Market

      Last Sold Price $390,000

      Last Listing Agent Rhonda Krebs CENTURY 21 Scheetz

    • 8245 S 300 E, Waldron, IN 46182
      8245 S 300 E, Waldron, IN 46182
      8245 S 300 E, Waldron, IN 46182
      /38

      Est $289,484 Not Listed For Sale

      8245 S 300 E, Waldron, IN 46182

      • 4 Beds
      • 2 Baths
      • 1,978 Sq Ft
      • Built 1900
      8245 S 300 E, Waldron, IN 46182

      Last Sold Summary

      • 3% Above List Price
      • $142/SF
      • 93 Days On Market

      Last Sold Price $280,000

      Last Listing Agent Eric Forney Keller Williams Indy Metro W

    • 3781 E River Rd, Waldron, IN 46182
      3781 E River Rd, Waldron, IN 46182
      3781 E River Rd, Waldron, IN 46182
      /20

      Est $303,298 Not Listed For Sale

      3781 E River Rd, Waldron, IN 46182

      • 3 Beds
      • 1.5 Baths
      • 2,600 Sq Ft
      • Built 1950
      3781 E River Rd, Waldron, IN 46182

      Last Sold Summary

      • 20% Above List Price
      • $97/SF
      • 147 Days On Market

      Last Sold Price $252,000

      Last Listing Agent Jerry Drake Dropped Members

    • 8592 S Pleasure Valley Rd, Waldron, IN 46182
      8592 S Pleasure Valley Rd, Waldron, IN 46182
      8592 S Pleasure Valley Rd, Waldron, IN 46182
      /30

      Est $192,840 Not Listed For Sale

      8592 S Pleasure Valley Rd, Waldron, IN 46182

      • 3 Beds
      • 2 Baths
      • 1,548 Sq Ft
      • Built 1950
      8592 S Pleasure Valley Rd, Waldron, IN 46182

      Last Sold Summary

      • 5% Above List Price
      • $119/SF
      • 4 Days On Market

      Last Sold Price $184,000

      Last Listing Agent Doug Fredbeck Keller Williams Indpls Metro N

    • 8624 S Pleasure Valley Rd, Waldron, IN 46182
      8624 S Pleasure Valley Rd, Waldron, IN 46182
      8624 S Pleasure Valley Rd, Waldron, IN 46182
      /5

      Est $92,119 Not Listed For Sale

      8624 S Pleasure Valley Rd, Waldron, IN 46182

      • 3 Beds
      • 1 Bath
      • 576 Sq Ft
      • Built 1950
      8624 S Pleasure Valley Rd, Waldron, IN 46182

      Last Sold Summary

      • 84% Above List Price
      • $87/SF
      • 25 Days On Market

      Last Sold Price $50,000

      Last Listing Agent Lisa Wojihoski-Schaler Culmann Real Estate Group, LLC

    • 8832 S Pleasure Valley Rd, Waldron, IN 46182
      8832 S Pleasure Valley Rd, Waldron, IN 46182
      8832 S Pleasure Valley Rd, Waldron, IN 46182
      /37

      Est $127,082 Not Listed For Sale

      8832 S Pleasure Valley Rd, Waldron, IN 46182

      • 1 Bed
      • 1 Bath
      • 720 Sq Ft
      • Built 1930
      8832 S Pleasure Valley Rd, Waldron, IN 46182

      Last Sold Summary

      • 6% Below List Price
      • $188/SF
      • 1 Day On Market

      Last Sold Price $135,000

      Last Listing Agent Penny Akers Hoosier, REALTORS®

    • 8723 S Sleepy Hollow Rd, Waldron, IN 46182
      8723 S Sleepy Hollow Rd, Waldron, IN 46182
      8723 S Sleepy Hollow Rd, Waldron, IN 46182
      /30

      Est $180,667 Not Listed For Sale

      8723 S Sleepy Hollow Rd, Waldron, IN 46182

      • 2 Beds
      • 2.5 Baths
      • 2,160 Sq Ft
      • Built 1986
      8723 S Sleepy Hollow Rd, Waldron, IN 46182

      Last Sold Summary

      • 20% Above List Price
      • $69/SF
      • 52 Days On Market

      Last Sold Price $150,000

      Last Listing Agent Valerie Fields Exodus Realty

    • Unlisted Address
      Unlisted Address
      Unlisted Address
      /23

      Est $106,170 Not Listed For Sale

      Unlisted Address

      • 1 Bed
      • 1 Bath
      • 1,216 Sq Ft
      • Built 1945
      Unlisted Address

      Last Sold Summary

      • 52% Above List Price
      • $58/SF
      • 26 Days On Market

      Last Sold Price $70,000

      Last Listing Agent Lisa Hubbard Carpenter, REALTORS®

    • 3178 E 750 S, Waldron, IN 46182
      3178 E 750 S, Waldron, IN 46182
      3178 E 750 S, Waldron, IN 46182
      /26

      Est $233,433 Not Listed For Sale

      3178 E 750 S, Waldron, IN 46182

      • 2 Beds
      • 1 Bath
      • 1,789 Sq Ft
      • Built 1900
      3178 E 750 S, Waldron, IN 46182

      Last Sold Summary

      • 14% Above List Price
      • $115/SF
      • 20 Days On Market

      Last Sold Price $205,119

      Last Listing Agent Steve Lew Steve Lew Real Estate Group, LLC

    • 6064 S State Road 9, Waldron, IN 46182
      6064 S State Road 9, Waldron, IN 46182
      6064 S State Road 9, Waldron, IN 46182
      /16

      Est $150,340 Not Listed For Sale

      6064 S State Road 9, Waldron, IN 46182

      • 2 Beds
      • 1 Bath
      • 960 Sq Ft
      • Built 1961
      6064 S State Road 9, Waldron, IN 46182

      Last Sold Summary

      • 16% Above List Price
      • $135/SF
      • 1 Day On Market

      Last Sold Price $130,000

      Last Listing Agent Sue Bowers Bowers Property Group, LLC

    • 504 W Washington St, Waldron, IN 46182
      504 W Washington St, Waldron, IN 46182
      504 W Washington St, Waldron, IN 46182
      /28

      Est $177,029 Not Listed For Sale

      504 W Washington St, Waldron, IN 46182

      • 2 Beds
      • 1 Bath
      • 1,176 Sq Ft
      • Built 1930
      504 W Washington St, Waldron, IN 46182

      Last Sold Summary

      • 23% Above List Price
      • $122/SF
      • 4 Days On Market

      Last Sold Price $143,900

      Last Listing Agent Olivia Albright Dropped Members

    • 111 E Grant St, Waldron, IN 46182
      111 E Grant St, Waldron, IN 46182
      111 E Grant St, Waldron, IN 46182
      /5

      Est $188,037 Not Listed For Sale

      111 E Grant St, Waldron, IN 46182

      • 2 Beds
      • 1 Bath
      • 1,017 Sq Ft
      • Built 1956
      111 E Grant St, Waldron, IN 46182

      Last Sold Summary

      • 39% Above List Price
      • $133/SF
      • 1 Day On Market

      Last Sold Price $135,000

      Last Listing Agent Non-BLC Member MIBOR REALTOR® Association

    • Unlisted Address
      Unlisted Address
      Unlisted Address
      /4

      Est $188,359 Not Listed For Sale

      Unlisted Address

      • 3 Beds
      • 1.5 Baths
      • 2,208 Sq Ft
      • Built 1952
      Unlisted Address

      Last Sold Summary

      • 71% Above List Price
      • $50/SF
      • 0 Days On Market

      Last Sold Price $110,000

      Last Listing Agent Tamara Wright Hoosier, REALTORS®

    • 2343 S 600 E, Waldron, IN 46182
      2343 S 600 E, Waldron, IN 46182
      2343 S 600 E, Waldron, IN 46182
      /4

      Est $309,964 Not Listed For Sale

      2343 S 600 E, Waldron, IN 46182

      • 3 Beds
      • 2 Baths
      • 2,432 Sq Ft
      • Built 2000
      2343 S 600 E, Waldron, IN 46182

      Last Sold Summary

      • 57% Above List Price
      • $81/SF
      • 1 Day On Market

      Last Sold Price $198,000

      Last Listing Agent Thresa Smith Modern Realty Group Inc

    • 7916 E 300 S, Waldron, IN 46182
      7916 E 300 S, Waldron, IN 46182
      7916 E 300 S, Waldron, IN 46182
      /41

      Est $549,240 Not Listed For Sale

      7916 E 300 S, Waldron, IN 46182

      • 5 Beds
      • 3 Baths
      • 3,882 Sq Ft
      • Built 1992
      7916 E 300 S, Waldron, IN 46182

      Last Sold Summary

      • 6% Above List Price
      • $134/SF
      • 27 Days On Market

      Last Sold Price $519,900

      Last Listing Agent Annette Nasby Runnebohm Realty, LLC

    • 671 S 775 E, Waldron, IN 46182
      671 S 775 E, Waldron, IN 46182
      671 S 775 E, Waldron, IN 46182
      /37

      Est $427,996 Not Listed For Sale

      671 S 775 E, Waldron, IN 46182

      • 4 Beds
      • 3 Baths
      • 2,688 Sq Ft
      • Built 2000
      671 S 775 E, Waldron, IN 46182

      Last Sold Summary

      • 2% Below List Price
      • $162/SF
      • 1 Day On Market

      Last Sold Price $435,000

      Last Listing Agent Adam Barlow FULL CANOPY REAL ESTATE, LLC

    • 5527 S 500 E, Waldron, IN 46182
      5527 S 500 E, Waldron, IN 46182
      5527 S 500 E, Waldron, IN 46182
      /35

      Est $370,795 Not Listed For Sale

      5527 S 500 E, Waldron, IN 46182

      • 5 Beds
      • 3 Baths
      • 4,130 Sq Ft
      • Built 1880
      5527 S 500 E, Waldron, IN 46182

      Last Sold Summary

      • 5% Above List Price
      • $85/SF
      • 18 Days On Market

      Last Sold Price $352,000

      Last Listing Agent Annette Nasby Runnebohm Realty, LLC

    • 2888 E 500 S, Waldron, IN 46182
      2888 E 500 S, Waldron, IN 46182
      2888 E 500 S, Waldron, IN 46182
      /3

      Est $444,736 Not Listed For Sale

      2888 E 500 S, Waldron, IN 46182

      • 3 Beds
      • 1 Bath
      • 2,022 Sq Ft
      • Built 1920
      2888 E 500 S, Waldron, IN 46182

      Last Sold Summary

      • 31% Above List Price
      • $168/SF
      • 4 Days On Market

      Last Sold Price $340,000

      Last Listing Agent Rebecca Allen F.C. Tucker/Sirkus-Allen

    • 301 W Pearl St, Waldron, IN 46182
      301 W Pearl St, Waldron, IN 46182
      301 W Pearl St, Waldron, IN 46182
      /20

      Est $205,551 Not Listed For Sale

      301 W Pearl St, Waldron, IN 46182

      • 3 Beds
      • 2 Baths
      • 1,602 Sq Ft
      • Built 1920
      301 W Pearl St, Waldron, IN 46182

      Last Sold Summary

      • 12% Above List Price
      • $115/SF
      • 0 Days On Market

      Last Sold Price $184,000

      Last Listing Agent Jeanie Mohr Premier Real Estate LLC

    • 202 W Tinker St, Waldron, IN 46182
      202 W Tinker St, Waldron, IN 46182
      202 W Tinker St, Waldron, IN 46182
      /29

      Est $195,223 Not Listed For Sale

      202 W Tinker St, Waldron, IN 46182

      • 3 Beds
      • 1 Bath
      • 1,040 Sq Ft
      • Built 1984
      202 W Tinker St, Waldron, IN 46182

      Last Sold Summary

      • 15% Above List Price
      • $163/SF
      • 2 Days On Market

      Last Sold Price $170,000

      Last Listing Agent Sheri Jones Hoosier, REALTORS®

    • 204 W Walnut St, Waldron, IN 46182
      204 W Walnut St, Waldron, IN 46182
      204 W Walnut St, Waldron, IN 46182
      /21

      Est $134,929 Not Listed For Sale

      204 W Walnut St, Waldron, IN 46182

      • 1 Bed
      • 1 Bath
      • 986 Sq Ft
      • Built 1920
      204 W Walnut St, Waldron, IN 46182

      Last Sold Summary

      • 23% Above List Price
      • $112/SF
      • 55 Days On Market

      Last Sold Price $110,000

      Last Listing Agent Lisa Hubbard Carpenter, REALTORS®

    • 205 W Pearl St, Waldron, IN 46182
      205 W Pearl St, Waldron, IN 46182
      205 W Pearl St, Waldron, IN 46182
      /4

      Est $159,677 Not Listed For Sale

      205 W Pearl St, Waldron, IN 46182

      • 3 Beds
      • 1.5 Baths
      • 1,188 Sq Ft
      • Built 1920
      205 W Pearl St, Waldron, IN 46182

      Last Sold Summary

      • 9% Above List Price
      • $124/SF
      • 0 Days On Market

      Last Sold Price $147,000

      Last Listing Agent Steve Lew Steve Lew Real Estate Group, LLC

    • Unlisted Address
      Unlisted Address
      Unlisted Address
      /5

      Est $135,506 Not Listed For Sale

      Unlisted Address

      • 2 Beds
      • 3 Baths
      • 1,044 Sq Ft
      • Built 1930
      Unlisted Address

      Last Sold Summary

      • 13% Above List Price
      • $115/SF
      • 0 Days On Market

      Last Sold Price $120,000

      Last Listing Agent Laurie Kohlhepp Runnebohm Realty, LLC

    • 303 S Columbia St, Waldron, IN 46182
      303 S Columbia St, Waldron, IN 46182
      303 S Columbia St, Waldron, IN 46182
      /31

      Est $205,327 Not Listed For Sale

      303 S Columbia St, Waldron, IN 46182

      • 4 Beds
      • 1 Bath
      • 1,614 Sq Ft
      • Built 1900
      303 S Columbia St, Waldron, IN 46182

      Last Sold Summary

      • 10% Above List Price
      • $116/SF
      • 4 Days On Market

      Last Sold Price $187,000

      Last Listing Agent Nathan Runnebohm Runnebohm Realty, LLC

    • 7506 S 600 E, Waldron, IN 46182
      7506 S 600 E, Waldron, IN 46182
      7506 S 600 E, Waldron, IN 46182
      /6

      Est $239,101 Not Listed For Sale

      7506 S 600 E, Waldron, IN 46182

      • 2 Beds
      • 2 Baths
      • 2,550 Sq Ft
      • Built 1927
      7506 S 600 E, Waldron, IN 46182

      Last Sold Summary

      • 91% Above List Price
      • $49/SF
      • 24 Days On Market

      Last Sold Price $125,000

      Last Listing Agent Tim Jensen Veridus Real Estate Services

    • 107 E Pullman St, Waldron, IN 46182
      107 E Pullman St, Waldron, IN 46182
      107 E Pullman St, Waldron, IN 46182
      /43

      Est $192,822 Not Listed For Sale

      107 E Pullman St, Waldron, IN 46182

      • 2 Beds
      • 1.5 Baths
      • 1,908 Sq Ft
      • Built 1920
      107 E Pullman St, Waldron, IN 46182

      Last Sold Summary

      • 13% Above List Price
      • $89/SF
      • 0 Days On Market

      Last Sold Price $170,000

      Last Listing Agent Natalie Albrecht Dropped Members

    • 314 S Columbia St, Waldron, IN 46182
      314 S Columbia St, Waldron, IN 46182
      314 S Columbia St, Waldron, IN 46182
      /19

      Est $197,185 Not Listed For Sale

      314 S Columbia St, Waldron, IN 46182

      • 4 Beds
      • 1 Bath
      • 1,920 Sq Ft
      • Built 1920
      314 S Columbia St, Waldron, IN 46182

      Last Sold Summary

      • 132% Above List Price
      • $44/SF
      • 117 Days On Market

      Last Sold Price $85,000

      Last Listing Agent Nathan Runnebohm Runnebohm Realty, LLC

    • 406 S Central St, Waldron, IN 46182
      406 S Central St, Waldron, IN 46182
      406 S Central St, Waldron, IN 46182
      /9

      Not Listed For Sale

      406 S Central St, Waldron, IN 46182

      • 3 Beds
      • 1 Bath
      • 1,200 Sq Ft
      • Built 1974
      406 S Central St, Waldron, IN 46182

      Last Sold Summary

      • 142% Above List Price
      • $42/SF
      • 12 Days On Market

      Last Sold Price $50,000

      Last Listing Agent Dennis Nottingham RE/MAX Advanced Realty

    • 208 E Grant St, Waldron, IN 46182
      208 E Grant St, Waldron, IN 46182
      208 E Grant St, Waldron, IN 46182
      /40

      Est $223,016 Not Listed For Sale

      208 E Grant St, Waldron, IN 46182

      • 3 Beds
      • 1 Bath
      • 2,996 Sq Ft
      • Built 1920
      208 E Grant St, Waldron, IN 46182

      Last Sold Summary

      • 74% Above List Price
      • $43/SF
      • 4 Days On Market

      Last Sold Price $128,500

      Last Listing Agent Sheri Jones Hoosier, REALTORS®

    • 501 E Pearl St, Waldron, IN 46182
      501 E Pearl St, Waldron, IN 46182
      501 E Pearl St, Waldron, IN 46182
      /18

      Not Listed For Sale

      501 E Pearl St, Waldron, IN 46182

      • 3 Beds
      • 1 Bath
      • 1,946 Sq Ft
      • Built 1950
      501 E Pearl St, Waldron, IN 46182

      Last Sold Summary

      • 94% Above List Price
      • $41/SF
      • 323 Days On Market

      Last Sold Price $79,900

      Last Listing Agent Jeanie Mohr Premier Real Estate LLC

    • 308 Columbia St, Waldron, IN 46182
      308 Columbia St, Waldron, IN 46182
      308 Columbia St, Waldron, IN 46182
      /12

      Est $168,832 Not Listed For Sale

      308 Columbia St, Waldron, IN 46182

      • 3 Beds
      • 1 Bath
      • 2,100 Sq Ft
      • Built 1920
      308 Columbia St, Waldron, IN 46182

      Last Sold Summary

      • 275% Above List Price
      • $21/SF
      • 30 Days On Market

      Last Sold Price $45,000

      Last Listing Agent Keith Devine F.C. Tucker/Sirkus-Allen

    • 576 S 775 E, Waldron, IN 46182
      576 S 775 E, Waldron, IN 46182
      576 S 775 E, Waldron, IN 46182
      /13

      Est $226,323 Not Listed For Sale

      576 S 775 E, Waldron, IN 46182

      • 4 Beds
      • 1 Bath
      • 1,662 Sq Ft
      • Built 1910
      576 S 775 E, Waldron, IN 46182

      Last Sold Summary

      • 571% Above List Price
      • $20/SF
      • 145 Days On Market

      Last Sold Price $33,739

      Last Listing Agent Rachel Sarig Carmel Estates, LLC

Showing Results 41 - 80, Page 2 of 18

Indiana Shelby County Waldron

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