[Home](./index.md) > [bitburner](./bitburner.md) > [OfficeAPI](./bitburner.officeapi.md) > [getOfficeSizeUpgradeCost](./bitburner.officeapi.getofficesizeupgradecost.md) ## OfficeAPI.getOfficeSizeUpgradeCost() method Cost to Upgrade office size. Signature: ```typescript getOfficeSizeUpgradeCost(divisionName: string, cityName: string, asize: number): number; ``` ## Parameters | Parameter | Type | Description | | --- | --- | --- | | divisionName | string | Name of the division | | cityName | string | Name of the city | | asize | number | | Returns: number Cost of upgrading the office