> ## Documentation Index > Fetch the complete documentation index at: https://zenorent.com/docs/llms.txt > Use this file to discover all available pages before exploring further. # Development Sales > Unit sales, milestone-based buyer payments, and project vendor management. The Development module tracks real-estate development projects end to end: buyers on one side, vendors on the other, the construction schedule in between. ## Hierarchy * **Project** — a building or development * **Milestones** — construction phases * **Buyers** — individuals or entities purchasing units * **Unit Sales** — the sale of specific units to a buyer * **Payment Schedules** — buyer payments tied to milestones or dates * **Buyer Payments** — money received * **Vendors** — subs, suppliers, and other payees * **Vendor Bills / Contracts / Credits** — the project's cost side ## Projects **Add Project** captures Name, Address, and an optional Base Path for documents. The project dashboard summarizes total buyers, units sold, collected to date, and balance due. Project status: **Active**, **Completed**, **On Hold**. ## Milestones Milestones are phases (Foundation Complete, Shell, Plumbing, C of O, Closing, etc.). Add them in the project page's Milestones section with a Name and Sequence. When you mark a milestone complete, any payment schedule item linked to it becomes due automatically. ## Buyers **Add Buyer** from Development → Buyers or from a project page. Captures name, alternate names, address, phones, email, and notes. ### Payer entities Sometimes a buyer pays through an LLC or another entity. Payer Entities on the buyer's detail page track those relationships so the payment appears under the right buyer even when the name on the check is different. ## Unit Sales A Unit Sale represents selling one or more specific units to a buyer. Fields: Unit Designations ("2R + 2L"), Purchase Price, Contract Price, Amended Price, Additional Charges, Contract Date, Notes. **Total Due** = Amended Price (or Contract Price if no amendment) + Additional Charges. ## Payment Schedules Each unit sale has a schedule. A schedule item has a description ("At Contract Signing"), an amount, and either a fixed due date or a linked milestone. **Status**: Pending, Due, Partial, Paid. Linking to a milestone means the item activates the moment the milestone is marked complete — payment requests line up with the construction timeline. ## Buyer Payments **Add Payment** from Development → Payments or from a unit sale. Record amount, date, method (Check, Wire, Cash), reference, payer entity, destination, and which schedule item it applies to. **Status**: Cleared, Pending, Bounced, Replaced. ### Bouncing and replacing If a check bounces, open the payment and click **Mark as Bounced**. The payment stops counting toward the buyer's balance; any linked schedule item reverts to Due. A `[BOUNCED]` note is appended to the audit record. Use **Replace** (not just "add a new payment") to link the new payment to the bounced one. The original's status becomes Replaced and the trail stays intact. > [!WARNING] > > Only **Cleared** payments can be marked bounced. For a payment that came in as **Pending** and never cleared, delete it. ## Documents Contracts, promissory notes, mortgages, plans, and emails attach to a buyer, unit sale, or project. Types: **Shtar**, **Contract**, **Amendment**, **Receipt**, **Other**. Mark each as **Unsigned**, **Signed**, or **Pending Signature**. ## Vendor Center Development → Vendors lists every vendor on any project. From a vendor's page you can manage: * **Bills** — invoices from the vendor, with [full lifecycle](https://zenorent.com/docs/concepts.md#document-lifecycle) * **Contracts** — separate from estimates; formalized agreements with a value and status (Draft, Active, Completed, Cancelled) * **Estimates** — proposals before work begins, convertible to a bill or contract * **Credits** — amounts the vendor owes back to the project (see below) * **Payments** — amounts paid to the vendor, linkable to specific bills ### Vendor Credits **New Vendor Credit** captures vendor, amount, date. From the credit detail page, **Apply** lets you apply it against one or more of the vendor's bills. Status: Open → Partial → Closed. Only drafts with zero applications can be deleted. ### Document Queue Scanned vendor documents land in the [Inbox](https://zenorent.com/docs/workflow/inbox.md) and flow into the Development queue — where you confirm the extracted data and file the document as an estimate, bill, or contract on the right vendor. ## Activity Log Projects, buyers, unit sales, and vendors each have an Activity section for timestamped notes with optional attachments. ## Reports Development reports live at **More → Reports**. See [Reports](https://zenorent.com/docs/reports.md#development). This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.