--- title: How Do I Add a Space to a Site? (Building/Warehouse/Park/Chalet/Impervious Area)   description: Adding a space to a site allows you to add objects like impervious areas, supporting buildings. --- [Skip to content](https://support.testfit.io/knowledge/how-do-i-add-a-space-to-a-site-building/park/chalet/impervious-area-#main-content) [![](https://support.testfit.io/hs-fs/hubfs/primary%20wordmark.png?width=150&height=113&name=primary%20wordmark.png)](https://testfit.io/?hsLang=en) Open main navigation Close main navigation - - [Contact us](https://support.testfit.io/knowledge/kb-tickets/new) [Contact us](https://support.testfit.io/knowledge/kb-tickets/new?hsLang=en) Welcome to the TestFit Knowledge Base - There are no suggestions because the search field is empty. 1. [TestFit Knowledge Base](https://support.testfit.io/knowledge?hsLang=en) 2. [Fundamentals](https://support.testfit.io/knowledge/fundamentals?hsLang=en) 3. [Key Functions](https://support.testfit.io/knowledge/fundamentals?hsLang=en#key-functions) October 22, 2025 # How Do I Add a Space to a Site? (Building/Warehouse/Park/Chalet/Impervious Area)   ## If a support building, green space area, or impervious area is required on a site, use the Add Space command to include those areas on your site ### Add Space 1. Click the three dots at the end of the site layer and select **Add Space ![](https://support.testfit.io/hs-fs/hubfs/image-png-May-07-2025-01-33-00-1658-PM.png?width=455&height=364&name=image-png-May-07-2025-01-33-00-1658-PM.png)** 2. Select the space type and draw method. ![](https://support.testfit.io/hs-fs/hubfs/image-png-May-07-2025-02-19-25-6826-PM.png?width=341&height=394&name=image-png-May-07-2025-02-19-25-6826-PM.png) 3. Draw your desired building/area. ![](https://support.testfit.io/hs-fs/hubfs/image-png-May-07-2025-02-21-02-0939-PM.png?width=535&height=425&name=image-png-May-07-2025-02-21-02-0939-PM.png) 4. If an offset is required around the space/building, right click inside the space and select ****Create Offset ![](https://support.testfit.io/hs-fs/hubfs/image-png-May-07-2025-02-14-54-0759-PM.png?width=670&height=292&name=image-png-May-07-2025-02-14-54-0759-PM.png)**** --- ### Adding a Space to a Space If a building/space is required on top of the previously placed area, repeat the process but select the previously added area. ![](https://support.testfit.io/hs-fs/hubfs/image-png-May-07-2025-02-24-00-0345-PM.png?width=670&height=290&name=image-png-May-07-2025-02-24-00-0345-PM.png) --- --- ### Modifying an Existing Space Once a space has been place you can change it to a different type of Space by selecting it in the Nav-Tree and expanding the ***Type*** drop down. Each Space has a predetermined set of customizable parameter values. ![](https://support.testfit.io/hs-fs/hubfs/image-png-Oct-22-2025-05-51-40-5675-PM.png?width=422&height=792&name=image-png-Oct-22-2025-05-51-40-5675-PM.png) **Conditioned** - A generic volume. Contains no efficiency percentage, load factor, or parking requirement. **Unconditioned** - A generic unconditioned volume. Contains no efficiency percentage, load factor, or parking requirement. **Retail** - Used for shopping/stores/restaurants. Does contain an efficiency percentage, load factor, and parking requirement. **Void** - A blank void volume that can cut through other spaces.  **Multifamily** -  Used for high density buildings. Does contain an efficiency percentage, unit average, and parking ratio. **Hotel **- Used for hotels/motels. Does contain an efficiency percentage, key average, and parking ratio. **Modular** - Used for modular buildings. Does contain an efficiency percentage, unit average, and parking ratio. **Housing **- Used for low density buildings / Single family homes / Townhomes. Does contain an efficiency percentage, unit average, and parking ratio. **Parking Mass** - A multi level, low detail parking structure. Contains a *Stall average* attribute. **Office** - Used for office buildings. Does contain an efficiency percentage, Load factor, and parking ratio. **Park** - A green space with variable tree density/size attributes. Contains a Load factor, and parking requirement. **Civic **- Used for general civic centers. Contains an efficiency percentage, Load factor, and parking ratio. **Pond** - Used for water features / Retention. Has a depth value. **Industrial** - Used for industrial warehouses. Contains an efficiency factor.  **Impervious** - Used as an impervious flat space on a site. 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