Long Branch is located within a land grant from the government to Colonel Samuel Smith in the late 18th century.

Along Lake Shore Boulevard West, numerous business are located in a low-rise commercial strip.

West and the western property line of the Canadian Arsenals Ltd. (Small Arms Ltd., WWII) (now within Marie Curtis Park) south of Lakeshore Road in Mississauga.

[4] Before Long Branch became a village, it was the home to Loyalist Col. Sam Smith, who was one of the earliest settlers in Etobicoke.

[5] Col. Smith was granted a large tract of land for his service in the Queen's Rangers in 1797, which eventually extended from what is now Kipling Avenue to the original course of the Etobicoke River (now Creek), and south of Bloor Street to Lake Ontario after Col. Smith acquired additional parcels of land.

In 1883 Eastwood sold a portion of his land south of Lake Shore Road (now, Boulevard West) to a small group of financiers from Toronto.

Beginning in 1910, Colonel Frederick Burton Robbins bought land from the Newborn, Appleby, Van Every Estates and other lots south of Lake Shore Road around Long Branch Park and began to subdivide The Heathy Home Lots were called 'Pine Beach' 'The Pines' 'Lakeshore Gardens' and 'Lakeshore Gardens Annex'.

In 1895, the Toronto & Mimico Electric Railway and Light Company radial railway's single-track service was completed along Lake Shore Road from New Toronto through Long Branch to the current location of Long Branch Loop.

In 1915, the Long Branch Aerodrome was established to the west of the village in Toronto Township, today's Mississauga.

Robert Eastwood died in 1925, and his widow, "Lizzie" sold the property and homestead to Paul and May Laurent of Church Street (now Royal Road) Mimico.

A cenotaph was raised on Long Branch Avenue south of Lake Shore in 1933 to commemorate the village's contributions during the First (and later, Second) World War.

The Small Arms Limited Long Branch Arsenal munitions factory was established during World War II to the west of the village, just north of the Aerodrome's location.

Hazel had travelled 1,100 km (680 mi) over land, but while approaching Canada, it had merged with an existing powerful cold front.

The storm stalled over the Greater Toronto Area, and although it was now extratropical, it remained as powerful as a category 1 hurricane.

More than forty homes in Long Branch were lost at the mouth of the Etobicoke Creek due to flooding caused by Hurricane Hazel.

According to Long Branch Reeve Marie Curtis, "if it hadn't been for the trees, which held the houses back, half of them would have been swept out into the lake.

[13] To prevent any future floods from having similar disastrous results, cottages and houses from the floodplain, the sand bar and around the mouth of the river were removed and the area was turned into parkland.

Forty-Third Street, along the eastern bank of Etobicoke Creek, was closed up and only a stub north of Lake Shore Boulevard exists.

Etobicoke Creek originally turned at a right-angle to the west at the shore, but now is channelled straight out to the lake.

Lake Shore Boulevard West today is a major thoroughfare and business strip in transition, with plans, some controversial, to change its character from a low-density industrial-commercial corridor to higher-density residential uses including some limited commercial space.

After transfer to the Department of Munitions and Supply, a Crown Corporation, Small Arms Ltd. was formed to operate the facility.

Huge quantities of British-pattern military small arms were manufactured there during the Second World War, including the No.4 MkI* Lee–Enfield bolt-action rifle, and the Sten submachine-gun (or machine-carbine).

Beginning January 1, 1946, operations continued as the Small Arms Division, Canadian Arsenals Limited.

The factory complex was demolished and the "Arsenal Lands" are now slated to become part of Marie Curtis Park West.

[citation needed] It opened on May 20, 1915, by Curtiss Aeroplanes and Motors Company for the Royal Flying Corps.

The Long Branch training centre also provided instruction on flying boats at nearby Hanlon's Point in Toronto Harbour, the first seaplane base in Canada.

The major east–west arterial road in Long Branch is Lake Shore Boulevard, which connects to the east to downtown Toronto.