[1]: 67–68  The terminus of the ferry service continued to provide the impetus to development of this section of South Perth even after the bridging of the Swan River at the Narrows in the 1950s.

Warwick Broomfield, a reviewer of post office plans in Western Australia suggests: "a sheet showing a standard design which is similar to South Perth is ascribed to Hardwick in 1897.

The additions comprise face red brickwork with rendered cement sills to match the original details although a change in the coursework mortar is evident.

It is likely that the original (east) side vestibule entry to the former residence was removed at this time although the arched opening and door and toplight joinery remain.

[2] Externally, perimeter garden areas and a picket fence were re-instated around 2005 and the roof sheeting and rainwater goods replaced resulting in the building's "over-restored appearance".

Access to the central double corridor from the side (east) has been infilled and painted but retains its facebrick arched opening with brick voissoirs.

In general, floors and ceilings have been re-lined, and conventional shelving, fluorescent lights and window coverings installed, as well as mechanical ducting, plasterboard partition walls and built in joinery.

[2] The building is located on what has grown into a strategic intersection taking considerable suburban traffic from the south-eastern suburbs onto the Narrows Bridge and the Mitchell Freeway in one direction.

In the other direction Mends Street terminates in Labouchere Road, with the generally open space against the fence and verdant backdrop of the Zoological Gardens.

Along Mends Street, a number of buildings of heritage significance dictate the pace and character of what is perceived as a precinct with some modern infill.

The collection of brickwork buildings are freestanding with garden surrounds and this aspect emphasises their nineteenth century setting, albeit within a dense commercial strip and with a large service station across the road.

A number of alterations have been made to the building in the intervening period, generally reflecting the changes in the postal and telegraph service and the separation of Telecom from Australia Post.

The Mill Point Road elevation is symmetrical with a wraparound verandah centrally punctuated by a projecting wing corresponding to the former postal hall.

Freestanding, the building frontage is landscaped with cottage-style gardens; asphalted carparks and planting is provided along Mends Street and at the rear of the site.

The post office and quarters design is executed in a domestic scale with a degree of contrast provided by the face brick red walls and whited painted rendered frieze.

Further to this, the main transverse corridor (assumed to be part of the former attached residence) provides additional counter service area for the retail shop.

The roof has been re-sheeted with long lengths of colour bonded corrugated zincalume, a material which imparts an over restored appearance to this building.

Evidence of the former side entry to the attached residence is illegible and the composite nature of the building is confused by the extension of the verandah along the length of the east facade.

Original fabric is evident in discreet areas such as the placement of fireplaces, remnant rendered masonry walls, timber skirtings, doors, cornices and arched openings within the former transverse corridor.

While the former centrally projecting postal hall has some interpretation externally, this is not the case internally, where it has been enlarged and refurbished to standard Australia Post retail design.

South Perth Post Office is also of aesthetic significance due to being one of an important group of heritage buildings including the Old Mill Theatre, Heritage House Cultural Centre, the Police Station and the Windsor Hotel, located on a large street intersection formed by Mill Point Road and Mends Street.

[2] This Wikipedia article was originally based on South Perth Post Office, entry number 105370 in the Australian Heritage Database published by the Commonwealth of Australia 2020 under CC-BY 4.0 licence, accessed on 4 January 2020.