Monthly market index UPM-WIL-SLI-2026-09
The Wiltshire Short Let Index
A monthly measure of forward calendar unavailability across fixed market footprints around Swindon, Salisbury, Chippenham and Trowbridge.
01
Current evidence
Market snapshot
43%
Next 60 nights unavailable
The full valid forward window
57%
Friday and Saturday nights
Next 30 nights unavailable
64%
Peak night
Tuesday, 1 September
148
Unique homes in the reading
Across four fixed town footprints
02
Comparative view
What the latest reading shows
Tuesday, 1 September
03
Reading detail
Four towns, one transparent boundary
This is a combined reading for four defined town footprints. It does not claim to measure every short let in Wiltshire.
The demand pattern
Unavailable share within the next 30 nights.
- Friday and Saturday
- 57%Ten points above the rest of the week
- Sunday to Thursday
- 47%Next 30 nights
- First seven nights
- 60%The fullest horizon cut
- Softest night
- 35%Tuesday, 29 September
What cleared the release gate
The first release keeps the geographic and time boundaries visible.
- Unique homes
- 148Fresh and deduplicated sample
- Near term nights published
- 31/31All dates cleared the minimum sample
- Valid forward dates
- 61A complete 60 night horizon
- Town footprints
- 4Swindon, Salisbury, Chippenham and Trowbridge
04
Published data
Monthly index series
Each future release will retain the same four footprints, freshness rule and minimum sample threshold.
| Reading | Next 30 nights | Next 60 nights | Weekend nights | Unique homes | Observed |
|---|---|---|---|---|---|
| September 2026 | 49% | 43% | 57% | 148 | 1 September 2026 |
05
Data coverage
From the UK corpus to one Wiltshire reading
The index narrows the national warehouse to four fixed town footprints, then removes duplicate homes. The wider corpus is shown for provenance and is not presented as the Wiltshire sample.
10.36M
Night-level records
Observed availability states in the research warehouse2.07M
Priced night records
Rows carrying a usable nightly price observation120,143
Listing profiles catalogued
Discovery coverage before freshness and market-level deduplication99.6%
Profiles geocoded
119,707 profiles with usable coordinatesWarehouse coverage spans 4 June to 15 August 2026. Profile counts describe the UK discovery corpus, not active supply in this market; every published index applies its own geography, freshness, duplicate and minimum-sample rules. The corpus totals are the conservative 16 August audit. This market reading uses a later snapshot observed on 1 September 2026.
06
Transparency
Methodology and publication notes
The index combines fresh observations from fixed footprints around Swindon, Salisbury, Chippenham and Trowbridge, then removes duplicate homes. An unavailable night may be reserved, owner blocked or withheld for another reason, so this is not realised occupancy.
Defined town footprints
Swindon and Salisbury use eight kilometre radii. Chippenham and Trowbridge use five kilometre radii.
Fresh observations only
A calendar state must have been observed within five days of the reading date.
Each home counted once
Listings within 150 metres and homes overlapping two footprints are grouped before calculation.
Complete horizons only
The first release has 61 valid dates, so the wider figure is reported over 60 nights rather than 90.
Supporting publications
Wiltshire property managementMarket ReportsBath Short Let IndexManchester Short Let IndexProperty owners
Assess an individual Wiltshire property
The index is a market benchmark for four defined areas. A property forecast can account for the exact address, size, finish and operating plan.