[Home](./index.md) > [bitburner](./bitburner.md) > [CorpConstants](./bitburner.corpconstants.md) > [officeSizeUpgradeCostBase](./bitburner.corpconstants.officesizeupgradecostbase.md) ## CorpConstants.officeSizeUpgradeCostBase property Signature: ```typescript officeSizeUpgradeCostBase: number; ```