The Alto integration allows information from Alto to sync into Inventory Base, helping reduce manual data entry and keeping your inspection workflow connected to your wider property management process.
Alto is used to manage your property, tenancy, landlord, tenant, and appointment records. InventoryBase is used to manage inspections, capture property condition evidence, and produce inspection reports.
What does the Alto integration do?
With the Alto integration, you can:
Import Alto properties into Inventory Base
Create Inventory Base inspections from Alto appointments
Import relevant contacts, landlords, tenants, negotiators, and tenancy details
Send completed PDF inspection reports back to Alto
In simple terms:
Alto manages the property and tenancy records.
Inventory Base manages the inspection and report.
[Suggested visual: Simple flow image: Alto → Inventory Base → Completed report back to Alto]
What syncs between Alto and Inventory Base?
Sync direction | What syncs | What this means |
Alto → Inventory Base | Properties, appointments, negotiators, contacts, landlords, tenants, tenancy information, and approved supplier information where supported | Alto sends the key property and appointment details needed to create and manage inspections in Inventory Base. |
Inventory Base → Alto | Completed PDF inspection reports | Completed reports can be sent back to Alto, but only when the inspection was created from an Alto appointment and report upload is enabled. |
Before you connect Alto
Before Alto can be connected to Inventory Base, Inventory Base must be activated from the Alto Marketplace.
This allows Alto to send Radweb the required AgencyRef / branch reference details for your account. These details tell us which Alto branch, or branches, should be connected to your Inventory Base account.
Alto may provide:
a branch-level AgencyRef for individual branches
a group-level AgencyRef for multiple enabled branches
Once these details have been received, Radweb will complete the connection for your Inventory Base account.
How to start the connection
Log in to your Inventory Base online dashboard.
Go to Settings.
Select Integrations.
Find Alto Integration.
Click Connect Alto.
Follow the prompts to continue through the Alto Marketplace.
Once you have completed the Alto Marketplace steps, Alto will send the required AgencyRef / branch reference details to Radweb.
Our team will then complete the connection for your account.
Once Alto is connected
Once connected, you will see the Alto integration settings in Inventory Base.
From here, you can manage how Alto data syncs into Inventory Base, including:
property syncing
inspection syncing
appointment type mapping
negotiator settings
tenancy settings
contact and landlord import settings
completed report upload settings
ℹ️ These settings are covered in the next guide:
Alto Integration: Sync Settings
Important things to know
Before using the Alto integration, please note:
Alto is the source of the property, appointment, contact, negotiator, and tenancy data.
Inventory Base inspections are created from Alto appointments.
Inspections do not sync from Inventory Base into Alto.
Completed reports can only sync back to Alto for inspections created from Alto appointments.
If a property is archived in Alto, it is not automatically removed from Inventory Base.
Some optional functionality, such as webhooks, may be available on request but is not enabled by default.
Need help?
If you have activated Inventory Base in the Alto Marketplace but your Inventory Base account has not been connected yet, please contact our support team.
To help us check this quickly, please include:
your Inventory Base username (email address)
your Alto branch name or branch names
confirmation that Inventory Base has been activated in the Alto Marketplace
any AgencyRef details provided by Alto, if available




