Longest trading · Updated October 2026
Professional firms in Adelaide
- Professional firms compared
- 698
- Google reviews
- 34,668
- Median rating
- 4.9
As of October 2026, the three longest-trading professional firms in Adelaide, SA on Town Proven are Firefly Express (started in 1966; 4.2 from 99 Google reviews), O'Halloran Conveyancing (started in 1973; 5.0 from 35 Google reviews) and Magain Real Estate Stepney (started in 1975; 4.7 from 769 Google reviews).
Professional firms in Adelaide: the top 50
- 1
Firefly Express
from 99 Google reviews
Started: 1966
- 2
O'Halloran Conveyancing
from 35 Google reviews
Started: 1973
Ste 2, 1/5 Wakefield St
- 3
Magain Real Estate Stepney
from 769 Google reviews
Started: 1975
- 4
Booth Real Estate
from 31 Google reviews
Started: 1977
325 Wakefield St, Adelaide SA 5000
- 5
Cornerstone Conveyancing
from 119 Google reviews
Started: 1979
4 Mann Street, Mount Barker SA 5251
- 6
Wadlow Solicitors
from 60 Google reviews
Started: 1979
33 Pirie St, Adelaide SA 5000
- 7
PBS Accountants & Advisers Pty Ltd
from 10 Google reviews
Started: 1980
Marion SA
- 8
PMN Personal Injury Lawyers Adelaide
from 94 Google reviews
Started: 1982
- 9
Martin Real Estate
from 23 Google reviews
Started: 1984
1 O'Connell St, Adelaide SA 5006
- 10
TOOP+TOOP | Luxury Real Estate Adelaide
from 86 Google reviews
Started: 1985
- 11
Baker Young Limited
from 15 Google reviews
Started: 1985
- 12
Marshall SA Real Estate
from 20 Google reviews
Started: 1985
314 Portrush Rd
- 13
Adelaide Tuition Centre & Essentials Education
from 10 Google reviews
Started: 1986
- 14
Assured Home Loans
from 156 Google reviews
Started: 1988
C/O Keylend, 81 The Parade
- 15
Quantum Accounting
from 17 Google reviews
Started: 1988
452 Pulteney St, Adelaide SA 5000
- 16
TBM Accountants Pty Ltd
from 12 Google reviews
Started: 1988
138 South Tce, Adelaide SA 5000
- 17
Bernie Lewis Home Loans
from 71 Google reviews
Started: 1990
- 18
Phil Hoffmann Travel Hyde Park | Helloworld Travel Member
from 53 Google reviews
Started: 1990
82 King William Rd, Adelaide SA 5034
- 19
Phil Hoffmann Travel Norwood | Helloworld Travel Member
from 41 Google reviews
Started: 1990
151 The Parade, Adelaide SA 5067
- 20
Trevor White Conveyancers
from 13 Google reviews
Started: 1991
208 Carrington St, Adelaide SA 5000
- 21
Alexander Botten & Associates
from 26 Google reviews
Started: 1993
162 Flinders St, Adelaide SA 5000
- 22
Smart Conveyancing
from 44 Google reviews
Started: 1993
162 Flinders St, Adelaide SA 5000
- 23
Oracle Lending Solutions
from 126 Google reviews
Started: 1994
25-33 Stirling St, Adelaide SA 5031
- 24
AUG Student Services - Adelaide
from 571 Google reviews
Started: 1995
64 Grote Street, Adelaide SA 5000
- 25
Universal Finance Australia Pty Ltd
from 218 Google reviews
Started: 1999
38 North East Rd, Adelaide SA 5081
- 26
Fewster Properties Pty Ltd
from 68 Google reviews
Started: 1999
- 27
Tashly Consulting Xero Bookkeepers Adelaide
from 17 Google reviews
Started: 2000
THE Terrace Family, 70 Walkerville Ter, Adelaide SA 5081
- 28
ADLV Law, Adelaide
from 22 Google reviews
Started: 2001
Level 21/91 King William St, Adelaide SA 5000
- 29
Austbrokers Terrace
from 10 Google reviews
Started: 2005
187A Henley Beach Rd, Adelaide SA 5031
- 30
Finance Mutual Australia
from 99 Google reviews
Started: 2007
Level 5/333 King William Street, Adelaide SA 5000
- 31
Mangan Ey & Associates
from 68 Google reviews
Started: 2007
- 32
RoundAbout Travel
from 314 Google reviews
Started: 2008
- 33
ASA Lawyers
from 109 Google reviews
Started: 2008
Level 21/25 Grenfell St, Adelaide SA 5000
- 34
Travel Care
from 625 Google reviews
Started: 2010
222 Henley Beach Rd, Adelaide SA 5031
- 35
GTC Lawyers
from 12 Google reviews
Started: 2010
- 36
NJR Financial Solutions
from 37 Google reviews
Started: 2011
- 37
AWE Finance Solutions Pty Ltd
from 77 Google reviews
Started: 2012
262-264 Halifax St, Adelaide SA 5000
- 38
Integral Bookkeeping Solutions - Adelaide Xero Bookkeepers
from 45 Google reviews
Started: 2012
322 Glen Osmond Rd, Myrtle Bank SA 5064
- 39
BTD Lawyers
from 65 Google reviews
Started: 2012
78 Angas St, Adelaide SA 5000
- 40
Mayfair Finance Australia
from 178 Google reviews
Started: 2013
91 King William St, Adelaide SA 5000
- 41
Clark Panagakos Family Law
from 119 Google reviews
Started: 2014
- 42
Festival Bookkeeping
from 30 Google reviews
Started: 2015
41 Barnes Road, Glynde SA 5070
- 43
AUSUN Finance SA 贷款咨询
from 60 Google reviews
Started: 2016
47 Wright St
- 44
Eastern Conveyancing Pty Ltd
from 32 Google reviews
Started: 2016
25 Lower, Portrush Rd
- 45
Refinancer
from 618 Google reviews
Started: 2018
67-69 Sydenham Rd, Adelaide SA 5067
- 46
Zanda Wealth Mortgage Brokers Adelaide
from 141 Google reviews
Started: 2018
246-250 Pirie Street, Adelaide SA 5000
- 47
Camatta Lawyers
from 32 Google reviews
Started: 2018
- 48
Loans Combined - Mortgage Broker
from 398 Google reviews
Started: 2020
268 Payneham Road, Level 1, Payneham SA 5070
- 49
Integral Accounting Services
from 67 Google reviews
Started: 2020
266-268 Payneham Rd, Adelaide SA 5070
- 50
Search Mortgages
from 353 Google reviews
Started: 2021
Town Proven compared 698 professional firms in Adelaide, SA, with 34,668 Google reviews between them. Of these, 52 meet this list's method. The median rating is 4.9 from a median of 19 reviews.
Of the professional firms compared, the most reviewed is Flat Beds, with 866 Google reviews at 5.0.
How this list is ranked
Businesses are ranked by the year they started, as their own website states it, earliest first. Only businesses rated 4.0 or better from at least 10 Google reviews are listed.
The year is the business's own statement and is not checked against a register, and age alone says nothing about quality.
Questions
- Which professional firms in Adelaide, SA have been trading the longest?
- As of October 2026, the three longest-trading professional firms in Adelaide, SA on Town Proven are Firefly Express (started in 1966; 4.2 from 99 Google reviews), O'Halloran Conveyancing (started in 1973; 5.0 from 35 Google reviews) and Magain Real Estate Stepney (started in 1975; 4.7 from 769 Google reviews).
- How does Town Proven rank professional firms in Adelaide, SA?
- Businesses are ranked by the year they started, as their own website states it, earliest first. Only businesses rated 4.0 or better from at least 10 Google reviews are listed. The year is the business's own statement and is not checked against a register, and age alone says nothing about quality.
- How many professional firms in Adelaide, SA did Town Proven compare?
- Town Proven compared 698 professional firms in Adelaide, SA, with 34,668 Google reviews between them. Of these, 52 meet this list's method. The median rating is 4.9 from a median of 19 reviews.
- Can a business pay to be listed or to rank higher?
- No. Every business is ranked by the same published method, and no business can pay to be listed or to move up.