179

Recently Sold Homes in 61820

Section Image
  • 1402 N Harris Ave, Champaign, IL 61820
    1402 N Harris Ave, Champaign, IL 61820
    1402 N Harris Ave, Champaign, IL 61820
    /24

    $63,000

    Sold Aug 27, 2025

    1402 N Harris Ave, Champaign, IL 61820

    • 2 Beds
    • 1 Bath
    • 850 Sq Ft
    • Built 1940

    Last Sold Summary

    • 26% Above List Price
    • $74/SF
    • 1 Day On Market

    Current Estimated Value $67,380

    Last Listing Agent Ryan Dallas RYAN DALLAS REAL ESTATE

    1402 N Harris Ave, Champaign, IL 61820
  • 808 W Green St, Champaign, IL 61820
    808 W Green St, Champaign, IL 61820
    808 W Green St, Champaign, IL 61820
    /52

    $290,000

    Sold Sep 16, 2025

    808 W Green St, Champaign, IL 61820

    • 5 Beds
    • 2 Baths
    • 2,014 Sq Ft
    • Built 1920

    Last Sold Summary

    • 15% Below List Price
    • $144/SF
    • 67 Days On Market

    Current Estimated Value $296,006

    Last Listing Agent Joanna Smith Real Broker, LLC

    808 W Green St, Champaign, IL 61820
  • 2103 Melrose Dr Unit A, Champaign, IL 61820
    2103 Melrose Dr Unit A, Champaign, IL 61820
    2103 Melrose Dr Unit A, Champaign, IL 61820
    /16

    $135,000

    Sold Mar 12, 2026

    2103 Melrose Dr Unit A, Champaign, IL 61820

    • 2 Beds
    • 2 Baths
    • 1,060 Sq Ft
    • Built 1988

    Last Sold Summary

    • 4% Above List Price
    • $127/SF
    • 4 Days On Market

    Current Estimated Value $131,899

    Last Listing Agent Dionne Clifton LIVE Real Estate Group

    2103 Melrose Dr Unit A, Champaign, IL 61820
  • 2501 Melrose Dr, Champaign, IL 61820
    2501 Melrose Dr, Champaign, IL 61820
    2501 Melrose Dr, Champaign, IL 61820
    /41

    $237,500

    Sold Dec 19, 2025

    2501 Melrose Dr, Champaign, IL 61820

    • 3 Beds
    • 2.5 Baths
    • 1,736 Sq Ft
    • Built 1965

    Last Sold Summary

    • 5% Below List Price
    • $137/SF
    • 16 Days On Market

    Current Estimated Value $245,078

    Last Listing Agent Ryan Dallas RYAN DALLAS REAL ESTATE

    2501 Melrose Dr, Champaign, IL 61820
  • 1404 N Hickory St, Champaign, IL 61820
    1404 N Hickory St, Champaign, IL 61820
    1404 N Hickory St, Champaign, IL 61820
    /15

    $135,000

    Sold Apr 17, 2026

    1404 N Hickory St, Champaign, IL 61820

    • 3 Beds
    • 1 Bath
    • 900 Sq Ft
    • Built 1950

    Last Sold Summary

    • 4% Above List Price
    • $150/SF
    • 24 Days On Market

    Current Estimated Value $128,984

    Last Listing Agent Carol Meinhart The Real Estate Group,Inc

    1404 N Hickory St, Champaign, IL 61820
  • 1708 Park Haven Dr, Champaign, IL 61820
    1708 Park Haven Dr, Champaign, IL 61820
    1708 Park Haven Dr, Champaign, IL 61820
    /31

    $175,000

    Sold Apr 24, 2026

    1708 Park Haven Dr, Champaign, IL 61820

    • 3 Beds
    • 1.5 Baths
    • 2,015 Sq Ft
    • Built 1955

    Last Sold Summary

    • 12% Below List Price
    • $87/SF
    • 8 Days On Market

    Current Estimated Value $224,815

    Last Listing Agent Joanna Smith Real Broker, LLC

    1708 Park Haven Dr, Champaign, IL 61820
  • 705 W Kirby Ave, Champaign, IL 61820
    705 W Kirby Ave, Champaign, IL 61820
    705 W Kirby Ave, Champaign, IL 61820
    /49

    $389,900

    Sold Sep 16, 2025

    705 W Kirby Ave, Champaign, IL 61820

    • 4 Beds
    • 3 Baths
    • 2,091 Sq Ft
    • Built 1955

    Last Sold Summary

    • $186/SF
    • 16 Days On Market

    Current Estimated Value $393,059

    Last Listing Agent Lisa Duncan KELLER WILLIAMS-TREC

    705 W Kirby Ave, Champaign, IL 61820
  • 2502 S Prospect Ave, Champaign, IL 61820
    2502 S Prospect Ave, Champaign, IL 61820
    2502 S Prospect Ave, Champaign, IL 61820
    /32

    $225,000

    Sold Aug 15, 2025

    2502 S Prospect Ave, Champaign, IL 61820

    • 3 Beds
    • 1.5 Baths
    • 1,436 Sq Ft
    • Built 1966

    Last Sold Summary

    • $157/SF
    • 10 Days On Market

    Current Estimated Value $232,384

    Last Listing Agent Mark Waldhoff KELLER WILLIAMS-TREC

    2502 S Prospect Ave, Champaign, IL 61820
  • 504 W Healey St, Champaign, IL 61820
    504 W Healey St, Champaign, IL 61820
    504 W Healey St, Champaign, IL 61820
    /49

    $255,000

    Sold Jul 17, 2025

    504 W Healey St, Champaign, IL 61820

    • 4 Beds
    • 3 Baths
    • 1,706 Sq Ft
    • Built 1893

    Last Sold Summary

    • 6% Below List Price
    • $149/SF
    • 21 Days On Market

    Current Estimated Value $257,375

    Last Listing Agent Eddie Mullins RE/MAX REALTY ASSOCIATES-CHA

    504 W Healey St, Champaign, IL 61820
  • 107 N Elm St Unit 108, Champaign, IL 61820
    107 N Elm St Unit 108, Champaign, IL 61820
    /2

    $210,000

    Sold Mar 04, 2026

    107 N Elm St Unit 108, Champaign, IL 61820

    • 2 Beds
    • 2 Baths
    • 1,332 Sq Ft
    • Built 1975

    Last Sold Summary

    • 5% Below List Price
    • $158/SF
    • 96 Days On Market

    Current Estimated Value $212,203

    Last Listing Agent Alisa DeMarco Coldwell Banker R.E. Group

    107 N Elm St Unit 108, Champaign, IL 61820
  • 2302 Melrose Dr Unit A, Champaign, IL 61820
    2302 Melrose Dr Unit A, Champaign, IL 61820
    2302 Melrose Dr Unit A, Champaign, IL 61820
    /16

    $147,000

    Sold Jul 18, 2025

    2302 Melrose Dr Unit A, Champaign, IL 61820

    • 2 Beds
    • 1 Bath
    • 1,106 Sq Ft
    • Built 1977

    Last Sold Summary

    • 8% Below List Price
    • $133/SF
    • 19 Days On Market

    Current Estimated Value $151,769

    Last Listing Agent Carol Meinhart The Real Estate Group,Inc

    2302 Melrose Dr Unit A, Champaign, IL 61820
  • 1303 Garden Ln, Champaign, IL 61820
    1303 Garden Ln, Champaign, IL 61820
    1303 Garden Ln, Champaign, IL 61820
    /28

    $166,000

    Sold Oct 27, 2025

    1303 Garden Ln, Champaign, IL 61820

    • 3 Beds
    • 1 Bath
    • 1,073 Sq Ft

    Last Sold Summary

    • 1% Above List Price
    • $155/SF
    • 0 Days On Market

    Current Estimated Value $164,021

    Last Listing Agent Mark Panno KELLER WILLIAMS-TREC

    1303 Garden Ln, Champaign, IL 61820
  • 508 W Columbia Ave, Champaign, IL 61820
    508 W Columbia Ave, Champaign, IL 61820
    /2

    $275,000

    Sold Jun 05, 2025

    508 W Columbia Ave, Champaign, IL 61820

    • 7 Beds
    • 4 Baths
    • 1,166 Sq Ft

    Last Sold Summary

    • $236/SF
    • 17 Days On Market

    Current Estimated Value $268,316

    Last Listing Agent Jill Hess RE/MAX REALTY ASSOCIATES-CHA

    508 W Columbia Ave, Champaign, IL 61820
  • Unlisted Address
    Unlisted Address
    /2

    $289,900

    Sold Jul 16, 2025

    Unlisted Address

    • 4 Beds
    • 4 Baths
    • 1,130 Sq Ft

    Last Sold Summary

    • $257/SF
    • 0 Days On Market

    Current Estimated Value $292,087

    Last Listing Agent Jill Hess RE/MAX REALTY ASSOCIATES-CHA

    Unlisted Address
  • 809 W John St, Champaign, IL 61820
    809 W John St, Champaign, IL 61820
    /2

    $275,000

    Sold May 11, 2026

    809 W John St, Champaign, IL 61820

    • 3 Beds
    • 2 Baths
    • 1,734 Sq Ft
    • Built 1922

    Last Sold Summary

    • $159/SF
    • 3 Days On Market

    Current Estimated Value $272,532

    Last Listing Agent Mark Waldhoff KELLER WILLIAMS-TREC

    809 W John St, Champaign, IL 61820
  • 805 W Charles St, Champaign, IL 61820
    805 W Charles St, Champaign, IL 61820
    805 W Charles St, Champaign, IL 61820
    /36

    $239,500

    Sold May 16, 2025

    805 W Charles St, Champaign, IL 61820

    • 4 Beds
    • 1.5 Baths
    • 1,860 Sq Ft

    Last Sold Summary

    • 2% Below List Price
    • $129/SF
    • 1 Day On Market

    Current Estimated Value $238,532

    Last Listing Agent Rick Wilberg eXp Realty-Champaign

    805 W Charles St, Champaign, IL 61820
  • 410 N State St Unit 15, Champaign, IL 61820
    410 N State St Unit 15, Champaign, IL 61820
    /2

    $88,000

    Sold Nov 11, 2025

    410 N State St Unit 15, Champaign, IL 61820

    • 1 Bed
    • 1 Bath
    • 871 Sq Ft
    • Built 1922

    Last Sold Summary

    • 7% Below List Price
    • $101/SF
    • 32 Days On Market

    Last Listing Agent Wanli Zhang Trautman Real Estate Agency & Appraisal LLC

    410 N State St Unit 15, Champaign, IL 61820
  • 601 Louisiana Ave, Champaign, IL 61820
    601 Louisiana Ave, Champaign, IL 61820
    601 Louisiana Ave, Champaign, IL 61820
    /15

    $85,000

    Sold Jul 18, 2025

    601 Louisiana Ave, Champaign, IL 61820

    • 1 Bed
    • 1 Bath
    • 825 Sq Ft

    Last Sold Summary

    • $103/SF
    • 5 Days On Market

    Current Estimated Value $81,763

    Last Listing Agent Jim Waller Coldwell Banker R.E. Group

    601 Louisiana Ave, Champaign, IL 61820
  • 6 Regent Ct, Champaign, IL 61820
    6 Regent Ct, Champaign, IL 61820
    6 Regent Ct, Champaign, IL 61820
    /51

    $345,000

    Sold Dec 19, 2025

    6 Regent Ct, Champaign, IL 61820

    • 5 Beds
    • 2.5 Baths
    • 2,615 Sq Ft
    • Built 1966

    Last Sold Summary

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

    Current Estimated Value $346,582

    Last Listing Agent Jeff and Laura Finke Coldwell Banker R.E. Group

    6 Regent Ct, Champaign, IL 61820
  • 1003 N Randolph St, Champaign, IL 61820
    1003 N Randolph St, Champaign, IL 61820
    /2

    $103,000

    Sold Oct 22, 2025

    1003 N Randolph St, Champaign, IL 61820

    • 5 Beds
    • 3 Baths
    • 1,435 Sq Ft
    • Built 1919

    Last Sold Summary

    • 14% Below List Price
    • $72/SF
    • 39 Days On Market

    Current Estimated Value $105,562

    Last Listing Agent Joe Zalabak KELLER WILLIAMS-TREC

    1003 N Randolph St, Champaign, IL 61820
  • 615 Haines Blvd, Champaign, IL 61820
    615 Haines Blvd, Champaign, IL 61820
    615 Haines Blvd, Champaign, IL 61820
    /47

    $320,000

    Sold Aug 11, 2025

    615 Haines Blvd, Champaign, IL 61820

    • 3 Beds
    • 3 Baths
    • 2,000 Sq Ft
    • Built 1946

    Last Sold Summary

    • 8% Below List Price
    • $160/SF
    • 77 Days On Market

    Current Estimated Value $330,057

    Last Listing Agent Atif Irfan KELLER WILLIAMS-TREC

    615 Haines Blvd, Champaign, IL 61820
  • 706 Fairway Dr, Champaign, IL 61820
    706 Fairway Dr, Champaign, IL 61820
    706 Fairway Dr, Champaign, IL 61820
    /11

    $349,800

    Sold May 27, 2025

    706 Fairway Dr, Champaign, IL 61820

    • 3 Beds
    • 2 Baths
    • 4,039 Sq Ft
    • Built 1953

    Last Sold Summary

    • $87/SF
    • 5 Days On Market

    Current Estimated Value $355,783

    Last Listing Agent Barbara Gallivan KELLER WILLIAMS-TREC

    706 Fairway Dr, Champaign, IL 61820
  • 311 W Charles St, Champaign, IL 61820
    311 W Charles St, Champaign, IL 61820
    311 W Charles St, Champaign, IL 61820
    /22

    $155,200

    Sold Jun 10, 2025

    311 W Charles St, Champaign, IL 61820

    • 2 Beds
    • 1 Bath
    • 950 Sq Ft

    Last Sold Summary

    • 9% Above List Price
    • $163/SF
    • 0 Days On Market

    Current Estimated Value $153,269

    Last Listing Agent Tim Hoss RE/MAX Choice

    311 W Charles St, Champaign, IL 61820
  • 1311 N Neil St, Champaign, IL 61820
    1311 N Neil St, Champaign, IL 61820
    1311 N Neil St, Champaign, IL 61820
    /19

    $85,000

    Sold Jun 13, 2025

    1311 N Neil St, Champaign, IL 61820

    • 2 Beds
    • 1.5 Baths
    • 1,111 Sq Ft

    Last Sold Summary

    • $77/SF
    • 2 Days On Market

    Current Estimated Value $90,626

    Last Listing Agent Jake Patterson Realty Select One

    1311 N Neil St, Champaign, IL 61820
  • 1212 N Walnut St, Champaign, IL 61820
    1212 N Walnut St, Champaign, IL 61820
    1212 N Walnut St, Champaign, IL 61820
    /38

    $127,900

    Sold Nov 26, 2025

    1212 N Walnut St, Champaign, IL 61820

    • 3 Beds
    • 2 Baths
    • 1,744 Sq Ft
    • Built 1912

    Last Sold Summary

    • $73/SF
    • 2 Days On Market

    Current Estimated Value $125,326

    Last Listing Agent Jeremy Brandow Coldwell Banker R.E. Group

    1212 N Walnut St, Champaign, IL 61820
  • 305 N Prairie St Unit 7, Champaign, IL 61820
    305 N Prairie St Unit 7, Champaign, IL 61820
    /2

    $175,000

    Sold Nov 07, 2025

    305 N Prairie St Unit 7, Champaign, IL 61820

    • 2 Beds
    • 1 Bath
    • 917 Sq Ft
    • Built 1920

    Last Sold Summary

    • 6% Above List Price
    • $191/SF
    • 9 Days On Market

    Last Listing Agent Ryan Cherney Circle One Realty

    305 N Prairie St Unit 7, Champaign, IL 61820
  • 301 N Neil St Unit 702, Champaign, IL 61820
    301 N Neil St Unit 702, Champaign, IL 61820
    301 N Neil St Unit 702, Champaign, IL 61820
    /8

    $212,000

    Sold Nov 06, 2025

    301 N Neil St Unit 702, Champaign, IL 61820

    • 1 Bed
    • 1 Bath
    • 800 Sq Ft
    • Built 2007

    Last Sold Summary

    • $265/SF
    • 4 Days On Market

    Current Estimated Value $216,562

    Last Listing Agent Creg McDonald Realty Select One

    301 N Neil St Unit 702, Champaign, IL 61820
  • 722 S Lynn St, Champaign, IL 61820
    722 S Lynn St, Champaign, IL 61820
    722 S Lynn St, Champaign, IL 61820
    /42

    $350,000

    Sold Apr 20, 2026

    722 S Lynn St, Champaign, IL 61820

    • 4 Beds
    • 3 Baths
    • 1,567 Sq Ft
    • Built 1930

    Last Sold Summary

    • 9% Above List Price
    • $223/SF
    • 1 Day On Market

    Current Estimated Value $328,362

    Last Listing Agent Lisa Duncan KELLER WILLIAMS-TREC

    722 S Lynn St, Champaign, IL 61820
  • 1102 N 6th St, Champaign, IL 61820
    1102 N 6th St, Champaign, IL 61820
    1102 N 6th St, Champaign, IL 61820
    /22

    $100,000

    Sold Sep 05, 2025

    1102 N 6th St, Champaign, IL 61820

    • 3 Beds
    • 1 Bath
    • 864 Sq Ft

    Last Sold Summary

    • 11% Above List Price
    • $116/SF

    Current Estimated Value $95,352

    Last Listing Agent Scott Bechtel KELLER WILLIAMS-TREC

    1102 N 6th St, Champaign, IL 61820
  • 220 Arcadia Dr, Champaign, IL 61820
    220 Arcadia Dr, Champaign, IL 61820
    220 Arcadia Dr, Champaign, IL 61820
    /26

    $150,000

    Sold Nov 10, 2025

    220 Arcadia Dr, Champaign, IL 61820

    • 3 Beds
    • 1 Bath
    • 1,069 Sq Ft
    • Built 1947

    Last Sold Summary

    • 7% Above List Price
    • $140/SF
    • 4 Days On Market

    Current Estimated Value $144,924

    Last Listing Agent Reggie Taylor Coldwell Banker R.E. Group

    220 Arcadia Dr, Champaign, IL 61820
  • 904 S Elm Blvd, Champaign, IL 61820
    904 S Elm Blvd, Champaign, IL 61820
    904 S Elm Blvd, Champaign, IL 61820
    /15

    $200,000

    Sold Dec 01, 2025

    904 S Elm Blvd, Champaign, IL 61820

    • 2 Beds
    • 1 Bath
    • 959 Sq Ft

    Last Sold Summary

    • 5% Above List Price
    • $209/SF
    • 2 Days On Market

    Current Estimated Value $198,549

    Last Listing Agent Lisa Duncan KELLER WILLIAMS-TREC

    904 S Elm Blvd, Champaign, IL 61820
  • 402 E Park St, Champaign, IL 61820
    402 E Park St, Champaign, IL 61820
    402 E Park St, Champaign, IL 61820
    /32

    $196,500

    Sold Nov 10, 2025

    402 E Park St, Champaign, IL 61820

    • 4 Beds
    • 2 Baths
    • 1,798 Sq Ft
    • Built 1935

    Last Sold Summary

    • 2% Below List Price
    • $109/SF
    • 6 Days On Market

    Current Estimated Value $193,501

    Last Listing Agent Mark Panno KELLER WILLIAMS-TREC

    402 E Park St, Champaign, IL 61820
  • 1305 N Walnut St, Champaign, IL 61820
    1305 N Walnut St, Champaign, IL 61820
    1305 N Walnut St, Champaign, IL 61820
    /15

    $147,500

    Sold Dec 05, 2025

    1305 N Walnut St, Champaign, IL 61820

    • 4 Beds
    • 2 Baths
    • 1,500 Sq Ft
    • Built 1915

    Last Sold Summary

    • 2% Below List Price
    • $98/SF
    • 58 Days On Market

    Current Estimated Value $144,448

    Last Listing Agent Carol Meinhart The Real Estate Group,Inc

    1305 N Walnut St, Champaign, IL 61820
  • 503 N State St, Champaign, IL 61820
    503 N State St, Champaign, IL 61820
    /2

    $336,250

    Sold Aug 05, 2025

    503 N State St, Champaign, IL 61820

    • 4,142 Sq Ft
    • Built 1922

    Last Sold Summary

    • 14% Below List Price
    • $81/SF
    • 59 Days On Market

    Current Estimated Value $337,255

    Last Listing Agent Joe Zalabak KELLER WILLIAMS-TREC

    503 N State St, Champaign, IL 61820
  • 401 S Neil St, Champaign, IL 61820
    401 S Neil St, Champaign, IL 61820
    401 S Neil St, Champaign, IL 61820
    /8

    $500,000

    Sold Mar 17, 2026

    401 S Neil St, Champaign, IL 61820

    • Land
    • 16,117 Sq Ft
    • $1,351,351 per Acre

    Last Sold Summary

    • 13% Below List Price
    • 24 Days On Market

    Current Estimated Value $413,439

    Last Listing Agent Mark Panno KELLER WILLIAMS-TREC

    401 S Neil St, Champaign, IL 61820
  • 315 W Charles St, Champaign, IL 61820
    315 W Charles St, Champaign, IL 61820
    315 W Charles St, Champaign, IL 61820
    /17

    $157,000

    Sold Jul 16, 2025

    315 W Charles St, Champaign, IL 61820

    • 2 Beds
    • 1 Bath
    • 1,187 Sq Ft
    • Built 1942

    Last Sold Summary

    • 6% Below List Price
    • $132/SF
    • 4 Days On Market

    Current Estimated Value $163,555

    Last Listing Agent Tim Hoss RE/MAX Choice

    315 W Charles St, Champaign, IL 61820
  • 312 W Columbia Ave, Champaign, IL 61820
    312 W Columbia Ave, Champaign, IL 61820
    /2

    $210,000

    Sold May 28, 2025

    312 W Columbia Ave, Champaign, IL 61820

    • 3 Beds
    • 2 Baths
    • 1,179 Sq Ft

    Last Sold Summary

    • $178/SF
    • 14 Days On Market

    Current Estimated Value $213,599

    Last Listing Agent Jill Hess RE/MAX REALTY ASSOCIATES-CHA

    312 W Columbia Ave, Champaign, IL 61820
  • 1712 S Prospect Ave, Champaign, IL 61820
    1712 S Prospect Ave, Champaign, IL 61820
    1712 S Prospect Ave, Champaign, IL 61820
    /46

    $175,000

    Sold Jun 16, 2025

    1712 S Prospect Ave, Champaign, IL 61820

    • 4 Beds
    • 2 Baths
    • 2,160 Sq Ft
    • Built 1956

    Last Sold Summary

    • 8% Below List Price
    • $81/SF
    • 24 Days On Market

    Current Estimated Value $210,547

    Last Listing Agent Ryan Dallas RYAN DALLAS REAL ESTATE

    1712 S Prospect Ave, Champaign, IL 61820
  • 401 W Bradley Ave, Champaign, IL 61820
    401 W Bradley Ave, Champaign, IL 61820
    401 W Bradley Ave, Champaign, IL 61820
    /20

    $100,000

    Sold Feb 02, 2026

    401 W Bradley Ave, Champaign, IL 61820

    • 4 Beds
    • 1.5 Baths
    • 1,200 Sq Ft
    • Built 1900

    Last Sold Summary

    • $83/SF
    • 62 Days On Market

    Current Estimated Value $98,969

    Last Listing Agent Deana Gauze Coldwell Banker R.E. Group

    401 W Bradley Ave, Champaign, IL 61820
  • 301 N Neil St Unit 904, Champaign, IL 61820
    301 N Neil St Unit 904, Champaign, IL 61820
    301 N Neil St Unit 904, Champaign, IL 61820
    /25

    $218,000

    Sold Mar 27, 2026

    301 N Neil St Unit 904, Champaign, IL 61820

    • 1 Bed
    • 1 Bath
    • 749 Sq Ft
    • Built 2009

    Last Sold Summary

    • $291/SF
    • 9 Days On Market

    Current Estimated Value $216,863

    Last Listing Agent Craig Buchanan RE/MAX REALTY ASSOCIATES-CHA

    301 N Neil St Unit 904, Champaign, IL 61820

Showing Results 41 - 80, Page 2 of 5

Illinois Champaign County Champaign 61820

Recently Sold Real Estate & Homes in 61820

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