Over the years the Society has been the recipient of a number of grants to help it with meeting administration costs and to undertake the work of managing its important Museum, Library and Photograph Collections. Examples of recent grants include:
- Community Heritage Grant 2017, Preservation Needs Assessment
- Lotterywest Grant 2018, "Professional Fees - Towards a feasibility plan/business model for the future sustainability and accommodation and accommodation requirements" for the proposed new building, .
- Lotterywest Heart Grant, 2020, for cabinet and defibrillator.
- Lotterywest grants for travel and accommodation costs for Affiliated Societies' delegates to attend the Royal Western Australian Historical Society's Annual State History Conference of Affiliated Societies, 2018,1019 and 2020 (subsequently extended to 2021 due to COVID restrictions).
- Lotterywest Grant, 2020 towards loss of revenue due to the COVID crisis.
The Society supports the preservation of movable and built heritage in many ways. As part of this activity it has participated in successful public campaigns. These include:
- the establishment of the State Archives and the J S Battye Library of West Australian History within the Library and Information Service of Western Australia (now the State Library of Western Australia)
- the retention of the Old Mill, South Perth
- the defence of the Barracks Arch, Perth
- the preservation of the Palace Hotel in Perth
- the recognition of the heritage values of the East Perth Cemeteries
- the retention of the Round House, Fremantle.
- the burnt historic Guildford Hotel restoration
Other important achievements
- Published nearly 15 volumes of annual parts of the publication of Early Days: Journal of the Royal Western Australian Historical Society
- An annual memorial service to honour the pioneers who are buried in the East Perth Cemeteries has been held since 1953
- The placement of memorials, frequently in partnership with local government, across the State to provide information and recognition of many facets of Western Australian history of special interest for tourists
- It was largely because of the growing response in the 1950s to heritage issues such as the Old Mill and the Barracks Arch, that the Society supported the formation of a local branch of the National Trust of Australia. This support is recognised in the relevant legislation establishing the branch and granting the Society permanent representation on the Council of the Trust. The formation of the National Trust of Australia (Western Australia) has relieved the Society of some heritage responsibilities and thus enabled our members to concentrate on the vital role of cataloguing, collating and conserving historical documents and artefacts
- The Society is represented on important historical organisations, namely:
- Federation of Australian Historical Societies Inc.
- Historical Records Rescue Consortium that obtained 2 Lotterywest grants to undertake digitising Western Australian historical newspapers.
- History Council of Western Australia Inc.
- National Trust of Australia (Western Australia)