The homestead site and 2,000 acres (810 ha) of land remained with the grandson of the company's founder, but the remainder of the property, including the Jondaryan Woolshed, was sold and subdivided.

His initial pastoral experience was at Yarrundi station in the Hunter River valley, the property of his older brother, Stephen Coxen.

Henry Coxen was to become one of Queensland's most prosperous landowners, with an interest in at least 17 grazing leases, and at Jondaryan he was responsible for overseeing the initial improvements to the station.

The Commissioner of Crown Lands records for 1844 indicate that the number of huts on the site had decreased to 2, but 4 stables had been erected by that time and work began on the first house at Jondaryan.

However, the ironstone ridge on which this house was built attracted lightning strikes during storms and in late 1844 it was decided to erect a new residence 2 miles (3.2 km) upstream, where the present homestead now stands.

It was constructed from sturdy iron bark slabs and floors, and remained in use as the main house at Jondaryan until 30 December 1937 when it was destroyed by fire.

At much the same time that this house was being built, other slab structures were erected to support the workings of the station, including a small shearing shed and yard.

After Charles Coxen disposed of his interests in Jondaryan in 1845, the property passed to James Macabrieu Andrews and Robert Tertius Campbell.

In 1850, Campbell transferred his interest to John Gilchrist, Andrews' brother-in-law, before the leasehold was sold in 1854 to Donald Coutts and Walter Gray.

The Tooth brothers were merchants and brewers, with an interest in the bank of New South Wales as well as the Colonial Sugar Refining Company established in 1855.

James Charles White was manager of the property and continued there for 12 years after William Kent and Edward Wienholt became sub-lessees of Jondaryan in 1858.

For the next ten years, Jondaryan entered a phase of prosperity and growth as conditions on the Darling Downs allowed pastoralists to accumulate previously unparalleled profits.

[1] Profits from pastoralism were also used by Jondaryan's owners to improve the homestead site and station records indicate significant building activities were being carried on during the early 1860s.

In 1860, the main residence was renovated, perhaps in anticipation of Governor Bowen's visit the following year, and quarters for the station's shearers were erected.

A new butcher's shop, store, hides and tallow house, stables and St Anne's Anglican Church were erected around this time, and the Jondaryan Woolshed, was also completed during the early 1860s.

For an earlier visitor to the site, who is quoted in Jondaryan Woolshed (1998), the head station "was a very comfortable residence, very similar to the country gentlemen's house in England, except that it was all on one floor with a verandah all round and built of wood, and therefore covered a considerable extent of ground.

Jondaryan station continued to grow through the 1870s and 1880s, with a combined area of more than 300,000 acres (120,000 ha) of leasehold and freehold land.

During the 1890s, despite the increase in freehold land to over 162,000 acres (66,000 ha), the size of the leasehold area was reduced by government resumptions.

Significant structures of the Jondaryan Homestead Complex include a kitchen, butcher's shop, shearers' quarters, stables, dairy, toilet block and store.

There are remnants on the site of a number of other structures, including horse stalls, a killing shed, hide store and Chinese gardener's glasshouse.

A brick fireplace and chimneystack fits between the main gable-roofed core of the building and the area under the long skillion roof.

Surrounding this core structure on all sides is a skillion verandah roof, the supporting posts of which bear directly into the ground.

A proportion of the walls of the core are made of horizontal slabs slotted into vertical posts, while the remainder is open timber framing.

The edges of the corrugated iron cladding to the verandah roofs extend, for a short distance, inside the wall line.

The interior space is divided by a number of partial walls made either of framing alone, timber doors, or horizontal slabs.

Some of the structure's walls are clad in weatherboards, while the remainder are made of corrugated iron insulated with charcoal (according to both the NTQ & AHC descriptions).

The gable ends are clad in weatherboards, while the remaining walls are made of vertical slabs fitted between timber posts, which are positioned at corners, openings, and other structural intervals.

[1] This small structure sits adjacent to the eastern end of the toilet block, in the vicinity of the northern elevation of the house.

[1] The zone occupied by the house, kitchen and shearers' quarters has a number of established trees in it, including a tall palm.

Despite the destruction of most of the original homestead by fire, a number of early buildings remain substantially intact on the Jondaryan site.