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Owned Inventory (Tables) | 12 Months Ended
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Sep. 30, 2021
Real Estate [Abstract] |
Schedule of inventory | The components of our owned inventory are as follows as of September 30, 2021 and September 30, 2020:
in thousands | September 30, 2021 |  | September 30, 2020
Homes under construction | $ | 648,283 |  |  | $ | 525,021 |
Land under development | 648,404 |  |  | 589,763 |
Land held for future development | 19,879 |  |  | 28,531 |
Land held for sale | 9,179 |  |  | 12,622 |
Capitalized interest | 106,985 |  |  | 119,659 |
Model homes | 68,872 |  |  | 75,142 |
Total owned inventory | $ | 1,501,602 |  |  | $ | 1,350,738 |
Schedule of total inventory by segment | Total owned inventory by reportable segment is presented in the table below as of September 30, 2021 and September 30, 2020:
in thousands | Projects in Progress (a) |  | Land Held for Future Development |  | Land Held for Sale |  | Total Owned Inventory
September 30, 2021 |  |  |  |  |  |  |
West | $ | 781,036 |  |  | $ | 3,483 |  |  | $ | 4,478 |  |  | $ | 788,997 |
East | 264,991 |  |  | 10,888 |  |  | 584 |  |  | 276,463 |
Southeast | 269,738 |  |  | 5,508 |  |  | 4,117 |  |  | 279,363 |
Corporate and unallocated (b) | 156,779 |  |  | — |  |  | — |  |  | 156,779 |
Total | $ | 1,472,544 |  |  | $ | 19,879 |  |  | $ | 9,179 |  |  | $ | 1,501,602 |
September 30, 2020 |  |  |  |  |  |  |
West | $ | 627,986 |  |  | $ | 3,483 |  |  | $ | 4,516 |  |  | $ | 635,985 |
East | 241,799 |  |  | 14,077 |  |  | 3,702 |  |  | 259,578 |
Southeast | 266,905 |  |  | 10,971 |  |  | 4,404 |  |  | 282,280 |
Corporate and unallocated (b) | 172,895 |  |  | — |  |  | — |  |  | 172,895 |
Total | $ | 1,309,585 |  |  | $ | 28,531 |  |  | $ | 12,622 |  |  | $ | 1,350,738 |
(a) Projects in progress include homes under construction, land under development, capitalized interest, and model home categories from the preceding table. (b) Projects in progress amount includes capitalized interest and indirect costs that are maintained within our Corporate and unallocated segment.
Schedule of inventory impairments and lot option abandonment charges | The following table presents, by reportable segment, our total impairment and abandonment charges for the periods presented:
| Fiscal Year Ended September 30,
in thousands | 2021 |  | 2020 |  | 2019
Projects in Progress: |  |  |  |  |
West | $ | — |  |  | $ | — |  |  | $ | 92,912 |
Southeast | — |  |  | — |  |  | 858 |
Corporate and unallocated (a) | — |  |  | — |  |  | 16,260 |
Total impairment charges on projects in progress | $ | — |  |  | $ | — |  |  | $ | 110,030 |
Land Held for Sale: |  |  |  |  |
West | $ | — |  |  | $ | 89 |  |  | $ | 37,963 |
Southeast | — |  |  | 8 |  |  | — |
Corporate and unallocated (a) | — |  |  | 1,160 |  |  | 625 |
Total impairment charges on land held for sale | $ | — |  |  | $ | 1,257 |  |  | $ | 38,588 |
Abandonments: |  |  |  |  |
West | $ | — |  |  | $ | 923 |  |  | $ | — |
East | 465 |  |  | 82 |  |  | — |
Southeast | 388 |  |  | 641 |  |  | — |
Total abandonment charges | $ | 853 |  |  | $ | 1,646 |  |  | $ | — |
Total impairment and abandonment charges | $ | 853 |  |  | $ | 2,903 |  |  | $ | 148,618 |
(a) Amount represents capitalized interest and indirects balance that was impaired. Capitalized interest and indirects are maintained within our Corporate and unallocated segment.
Schedule of Discounted Cash Flow Analysis | The table below presents, by reportable segment, details of the impairment charges taken on projects in progress for fiscal 2019:
| Results of Discounted Cash Flow Analyses Prepared
$ in thousands | # of Communities Impaired |  | # of Lots Impaired |  | Impairment Charge |  | Estimated Fair Value of Impaired Inventory at Time of Impairment
Year Ended September 30, 2019
West | 9 |  |  | 839 |  |  | $ | 92,912 |  |  | $ | 69,449 |
Southeast | 1 |  |  | 15 |  |  | 858 |  |  | 1,367 |
Corporate and unallocated (a) | — |  |  | — |  |  | 16,260 |  |  | 14,166 |
Total | 10 |  |  | 854 |  |  | $ | 110,030 |  |  | $ | 84,982 |
(a) Amount represents the capitalized interest and indirect cost that were impaired. Capitalized interest and indirect costs are maintained within our Corporate and unallocated segment.
Quantitative unobservable inputs for inventory impairment | The table below presents the ranges or values of significant quantitative unobservable inputs we used in determining the fair value of the communities impaired during fiscal 2019:
Unobservable Inputs |  |  |  |  |  |
Average selling price (in thousands) |  |  |  |  |  | $350 - $615
Closings per community per month |  |  |  |  |  | 1 - 4
Discount rate |  |  |  |  |  | 14.7% - 16.8%

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