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ISTRM Glossary

The language of
STR revenue management

Every term, metric and framework you need to manage short-term rental revenue professionally. Defined clearly, without jargon, for practitioners.

37 terms
A
Average Daily Rate
ADR
Metric
Total rental revenue divided by total occupied nights over a given period. ADR measures how much a property earns on average for each night that is sold and is one of the most widely tracked metrics in STR management.
ADR in isolation tells you nothing about commercial performance. A property can achieve a high ADR by filling only its most valuable nights and leaving the calendar largely empty. ADR should always be read alongside occupancy rate and RevPAN.
ADR = Total Revenue ÷ Total Occupied Nights
Available Nights
Metric
The total number of nights in a given period during which a property is open for bookings. Available nights excludes owner-blocked dates, maintenance periods and any other dates intentionally removed from the booking calendar.
Getting available nights right is foundational to accurate RevPAN calculation. Including owner-blocked nights in the denominator artificially deflates RevPAN and produces a misleading picture of commercial performance.
Average Booking Value
ABV
Metric
The mean total revenue per confirmed reservation, including accommodation fees, cleaning fees and any additional charges. ABV reflects the combined effect of nightly rate, length of stay and ancillary revenue per booking.
ABV is most useful for understanding the commercial value of different booking sources and guest segments. A direct booking with a longer length of stay typically delivers a significantly higher ABV than an OTA booking for the same property.
B
Base Price
Pricing
The starting nightly rate from which a dynamic pricing system applies adjustments based on demand signals, seasonality and competitive positioning. The base price acts as an anchor for the rate calendar and has an outsized influence on overall revenue performance.
Base price is one of the most consequential and most frequently miscalibrated settings in STR revenue management. A base price set too low drags down the entire rate calendar even when demand is strong, producing a systematic RevPAN leak that is difficult to identify without a prior year comparison.
Booking Curve
Booking
A visual or data representation of how bookings accumulate for a specific period over time, showing the rate at which inventory sells from the point when the calendar opens through to the arrival date. Each property has a characteristic booking curve shape that reflects its market, guest profile and booking patterns.
Understanding your property's booking curve is the foundation of forward-looking rate management. Without it, the only information available when making a rate decision is how many nights are currently booked, which tells you nothing about whether demand is normal, ahead or behind.
Booking Pace
Booking
The rate at which bookings are accumulating for a future period, expressed as a comparison against a prior year baseline or revenue target for the same dates. Booking pace is the primary forward-looking signal in STR revenue management.
Pace only becomes a useful signal when read against a reference point. Knowing that a property has 12 bookings for a given week tells you nothing without knowing whether it had 8 or 18 at the same point last year. The comparison is the signal, not the absolute number.
Booking Window
Booking
The period between when a booking is made and the check-in date, expressed in days. Also referred to as lead time. The average booking window for a property varies significantly by market, season and property type and directly influences how far in advance rate decisions need to be made.
A shortening booking window, visible in year-on-year data, often signals a market shift or a pricing issue rather than weakening demand. Operators who respond to a shorter booking window by reducing rates may actually be reinforcing the behaviour by training guests that prices will fall closer to arrival.
C
Comp Set
Portfolio
A defined group of comparable properties used as a competitive benchmark for pricing, occupancy and revenue performance analysis. A well-constructed comp set contains properties that compete for the same guest, in the same location, at a similar price point and quality level.
Comp set construction matters more than most operators realise. A comp set that is too broad dilutes the signal. One that only includes similar-performing properties creates a false sense of competitive position. The comp set should include properties slightly above and below current performance to create genuine commercial tension.
Compression Night
Booking
A night where demand significantly exceeds available supply in a market, typically driven by local events, public holidays or peak season. Compression nights represent the highest rate opportunity in the STR calendar and are where under-priced inventory costs operators the most.
Compression nights should be identified well in advance and priced significantly above base rates. The most common mistake is applying standard seasonal rate uplift to compression nights rather than responding to the actual demand signal, which is typically much stronger than seasonality alone would suggest.
Channel Mix
Distribution
The distribution of bookings and revenue across different platforms and booking sources, expressed as a percentage of total bookings or total revenue. Channel mix includes OTA platforms, direct bookings, repeat guests and any other booking sources the property uses.
Channel mix has a direct impact on net revenue because different channels carry different commission costs. Understanding channel mix at the revenue level, not just the booking level, is necessary for an accurate picture of portfolio profitability.
Channel Manager
Portfolio
Software that synchronises a property's availability, rates and booking information across multiple OTA platforms and booking channels simultaneously, preventing double bookings and ensuring rate parity where required.
A channel manager is operational infrastructure rather than a revenue management tool. It ensures rate and availability consistency across channels but does not make pricing decisions. Confusing a channel manager with a revenue management system is a common and costly mistake.
D
Demand
Booking
The number of rental nights that guests are willing to book at a given price during a given period. Demand in STR is driven by a combination of seasonality, local events, macroeconomic conditions, market supply levels and platform visibility factors.
Demand is not the same as bookings. A property can have high latent demand and low bookings if its rates are set above what guests in that market are willing to pay, or low latent demand and high bookings if rates are set well below market. Reading demand accurately requires market data, not just booking data.
Direct Booking Rate
Distribution
The percentage of total bookings or total revenue that arrives through direct channels rather than OTA platforms. Direct bookings carry no OTA commission cost and tend to correlate with higher repeat booking rates and longer average length of stay.
Improving direct booking rate is one of the highest-return strategies available to STR operators because every additional direct booking saves the full OTA commission on that transaction, with no additional marketing cost for established repeat guests.
Dynamic Pricing
Pricing
The practice of adjusting nightly rates continuously in response to demand signals, booking pace, competitive positioning, market conditions and remaining availability. In STR, dynamic pricing is typically delivered through a revenue management system that updates rates automatically.
The performance of a dynamic pricing system is directly determined by the quality of the strategy behind it. Operators who invest in understanding rate architecture, base price calibration and booking pace get significantly more from their RMS than those who treat it as a set-and-forget tool. The system executes the strategy, but the operator has to provide it.
G
GOPPAR
Gross Operating Profit Per Available Room
Metric
Gross operating profit divided by total available nights. GOPPAR measures profitability rather than revenue, accounting for operating costs as well as income. It is more useful than RevPAN for evaluating the true commercial performance of a managed portfolio.
GOPPAR is underused in STR relative to its value. A portfolio with strong RevPAN but high operating costs may be less profitable than one with lower RevPAN and tighter cost management. For operators assessing portfolio health or preparing for growth, GOPPAR provides a more complete picture than revenue metrics alone.
GOPPAR = Gross Operating Profit ÷ Total Available Nights
Gross Booking Value
GBV
Distribution
The total monetary value of all bookings before any deductions for OTA commissions, management fees or operating expenses. GBV is the headline revenue figure and forms the basis for commission calculations but does not reflect what the operator actually retains.
GBV is a useful top-line metric but should never be used as the primary measure of portfolio performance. The gap between GBV and net revenue can be substantial, sometimes 30 to 40 per cent in high-commission environments.
L
Length of Stay
LOS
Pricing
The number of consecutive nights in a single booking. Length of stay strategy involves setting minimum and maximum stay restrictions to optimise revenue across the full calendar, protecting high-value periods from short bookings and opening shorter stays during low-demand periods to improve occupancy.
Length of stay management is one of the most underused levers in STR revenue management. A property with a fixed minimum stay applied year-round is almost certainly leaving revenue behind in high-demand periods and missing occupancy in shoulder periods where a more flexible approach would fill the calendar.
M
Management Fee
Portfolio
The fee charged by a property management company to the property owner as compensation for managing the property. Management fees are typically expressed as a percentage of gross rental revenue and range from around 15 to 30 per cent depending on the scope of services and market.
Management fee structure affects the alignment between operator and owner commercial incentives. A percentage-of-revenue fee incentivises revenue growth. A flat fee creates less direct alignment. Understanding how fee structure influences operator behaviour is relevant to both owners selecting a manager and operators designing their service proposition.
Minimum Stay Restriction
Pricing
A calendar rule requiring guests to book a minimum number of consecutive nights in order to make a reservation. Minimum stay restrictions are used to protect high-demand periods from short, low-value bookings and to reduce turnover costs during peak occupancy periods.
Minimum stay restrictions need active management to be effective. A restriction set correctly for peak periods can become a revenue constraint during shoulder periods if left unchanged. Regular review of minimum stay settings against current booking pace is one of the most commercially impactful weekly revenue management actions.
N
Net Revenue
Distribution
Rental revenue after deducting OTA commissions, platform fees and any other distribution costs. Net revenue represents what the operator actually retains from each booking before operational costs are applied.
Net revenue is the correct basis for comparing performance across different booking channels. A booking that appears lower in gross terms may actually deliver higher net revenue if it arrives through a lower-commission or direct channel.
Net RevPAN
Metric
Revenue Per Available Night calculated on net revenue after channel commissions and platform fees are deducted. Net RevPAN provides a more accurate picture of true portfolio performance than gross RevPAN by accounting for the real cost of different distribution channels.
Two properties with identical gross RevPAN but different channel mixes may have substantially different Net RevPAN figures. A portfolio with a higher direct booking rate will typically show a more favourable Net RevPAN relative to gross RevPAN than one dependent on high-commission OTA channels.
Net RevPAN = Net Revenue ÷ Total Available Nights
O
Occupancy Rate
Metric
The percentage of available nights that are booked over a given period. Calculated by dividing booked nights by available nights and expressing the result as a percentage. Occupancy rate is the most widely tracked metric in STR but also the most frequently misused as a primary measure of performance.
High occupancy is not inherently a sign of good commercial management. A property achieving 95 per cent occupancy at a rate significantly below the market may be underperforming a property with 80 per cent occupancy at a materially higher rate. Occupancy should always be contextualised against rate and RevPAN.
Occupancy Rate = (Booked Nights ÷ Available Nights) × 100
Orphan Night
Pricing
A single unsold night that sits between two confirmed bookings and cannot be filled because the gap is shorter than the property's minimum stay requirement. Orphan nights represent direct revenue leakage and are one of the most common and avoidable sources of occupancy loss in STR portfolios.
Regular audit of the calendar for orphan nights is a basic but important revenue management action. Where orphan nights cannot be filled through booking, the surrounding reservations should be reviewed to see whether checkout or check-in dates can be adjusted to recover the night without disrupting the existing bookings.
OTA Commission
Distribution
The fee charged by an Online Travel Agency for each booking it facilitates, deducted automatically from the host or operator payout as a percentage of the accommodation revenue. OTA commissions typically range from 3 to 20 per cent depending on the platform, market and pricing model.
OTA commission is a fixed cost on every booking made through that channel. Understanding the blended commission cost across all OTA channels is essential for calculating net revenue accurately and for building a distribution strategy that improves overall margin.
P
Property Management System
PMS
Portfolio
Software that manages the core operational functions of a short-term rental portfolio, including reservations, guest communication, owner statements, housekeeping scheduling and channel synchronisation. A PMS is the operational backbone of a managed STR portfolio.
A PMS manages operations while a revenue management system manages commercial strategy. The two are distinct functions that are frequently confused. Operators who expect their PMS to function as a revenue management system are typically leaving significant commercial performance on the table.
Price Elasticity
Pricing
The degree to which demand for a property changes in response to a change in its price. A property with high price elasticity will experience a significant change in booking conversion when rates are adjusted. A property with low price elasticity maintains conversion across a wider rate range.
Understanding a property's price elasticity is important for calibrating rate strategy. Properties in markets with strong demand and limited comparable supply typically have lower price elasticity and can hold higher rates without significant occupancy impact. Properties in oversupplied or commoditised markets tend to have higher price elasticity.
R
Rate Architecture
Pricing
The structured approach to setting rates across a full calendar period, defining how base price, seasonal adjustments, event premiums, day-of-week variations and last-minute discounting interact to produce the rate calendar a guest sees. Rate architecture is the strategic layer that sits above individual rate decisions.
Most operators who use dynamic pricing tools have a rate calendar but not a rate architecture. The difference is intention: a rate architecture is designed to achieve a specific commercial outcome across the full year, not just to respond to market signals night by night.
RevPAN
Revenue Per Available Night
Metric
Total rental revenue divided by total available nights over a given period. RevPAN is the primary performance metric for STR portfolios because it accounts for both rate and occupancy simultaneously and cannot be inflated by accepting low-rate bookings to fill the calendar.
RevPAN is the metric that most directly measures commercial management quality. Two properties with identical occupancy rates but different RevPAN figures are being managed differently. The gap between them represents the commercial value of more deliberate revenue management.
RevPAN = Total Revenue ÷ Total Available Nights
RevPAR
Revenue Per Available Room
Metric
A hotel-derived metric calculated by multiplying ADR by occupancy rate, or by dividing total room revenue by total available room nights. RevPAR is the standard performance metric in hotel revenue management and is widely referenced in STR data platforms.
RevPAR was designed for hotels where all rooms in a property are sold at the same rate to different guests on the same night. In STR, where each property is a distinct unit with its own pricing, RevPAR and RevPAN are mathematically equivalent. The distinction matters most when properties are grouped at portfolio level, where RevPAN more accurately reflects STR-specific inventory dynamics.
RevPAR = ADR × Occupancy Rate
Revenue Management System
RMS
Portfolio
Software that analyses market data, competitor rates, demand signals and historical booking patterns to generate pricing recommendations for rental properties. An RMS integrates with a PMS to push rate updates across booking channels, removing manual pricing decisions from the operator's daily workflow.
An RMS is not a substitute for revenue management strategy. It is a tool that executes a strategy at scale and speed that manual management cannot match. The quality of an RMS's output depends directly on the quality of the inputs, settings and strategic intent applied by the operator.
S
Seasonality
Booking
The predictable, recurring variation in demand across a calendar year driven by factors including school holidays, weather patterns, local events and travel trends. Seasonality creates peaks, shoulders and troughs in the booking calendar and is the primary driver of rate variation in STR revenue management.
Understanding the specific seasonality profile of a market, rather than applying generic seasonal templates, is a foundational revenue management skill. Markets that appear similar in headline occupancy data can have very different seasonality profiles that require quite different rate architectures to optimise.
Segment Mix
Portfolio
The distribution of bookings across different guest types or booking sources, such as leisure guests, business travellers, repeat guests and different OTA platforms. Segment mix analysis reveals which guest types drive the most commercially valuable bookings and informs targeted rate and distribution strategy.
Segment mix shifts can indicate important commercial changes even when headline metrics remain stable. A portfolio that maintains RevPAN while its segment mix shifts toward lower-value or higher-commission segments may be masking a deteriorating commercial position.
T
TRevPAN
Total Revenue Per Available Night
Metric
Total revenue per available night including all revenue streams beyond accommodation, such as cleaning fees, pet fees, early check-in charges, damage waivers and any ancillary services. TRevPAN provides a more complete picture of total revenue generation per available night than accommodation-only RevPAN.
As STR operators develop more sophisticated ancillary revenue programmes, TRevPAN becomes increasingly useful as a performance metric. Properties with strong ancillary revenue can show meaningfully higher TRevPAN than RevPAN, which matters both for valuation and for understanding the full commercial return on the available calendar.
TRevPAN = Total Revenue (all sources) ÷ Total Available Nights
Y
Yield Management
Pricing
The practice of adjusting price and availability controls to maximise revenue from perishable inventory, based on the principle that the same inventory has different commercial value at different times and to different buyers. Yield management is the conceptual foundation of revenue management in all perishable-inventory industries.
Yield management as a formal discipline originated in the airline industry in the 1970s and was adopted by hotels in the 1980s. Its application to short-term rental is still maturing, and much of what passes for yield management in STR is in practice reactive rate adjustment rather than deliberate inventory optimisation.
ISTRM Proprietary Frameworks: Member Content
Revenue Booking Curve
ISTRM Framework
An ISTRM framework for reading the relationship between booking pace and revenue performance across the full booking window. Available exclusively to ISTRM members.
Member content. Join ISTRM to access.
Rate Capture Efficiency
ISTRM Framework
An ISTRM diagnostic metric that reveals how much of the available market rate a property actually captures, and where the leakage occurs. Available exclusively to ISTRM members.
Member content. Join ISTRM to access.
Revenue Risk Window
ISTRM Framework
An ISTRM framework that identifies where in the booking window a portfolio is most commercially exposed. Available exclusively to ISTRM members.
Member content. Join ISTRM to access.
Calendar Efficiency Rate
ISTRM Framework
An ISTRM metric that measures how effectively a property converts its available calendar into revenue, surfacing structural leaks that standard metrics cannot reveal. Available exclusively to ISTRM members.
Member content. Join ISTRM to access.
Revenue Concentration Risk
ISTRM Framework
An ISTRM portfolio diagnostic that measures how commercially vulnerable a portfolio is to shifts in its peak periods or primary booking sources. Available exclusively to ISTRM members.
Member content. Join ISTRM to access.

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