How does purchasing work in Santix?
Purchasing starts with a request and ends with a decision. Request items are the rows of the comparison, bids are the columns, and the request status shows where you are: draft, collecting bids, comparing, negotiating, decided or cancelled.
- A field engineer or site manager opens a request with a title (such as "B Blok mekanik tesisat"), trade, scope, date needed and optionally an estimate.
- Add items with description, unit, quantity and an optional estimated unit price, or import them from Excel with a column mapping.
- Ask suppliers for prices by phone, email or WhatsApp; Santix does not send requests to suppliers itself.
- Enter each bid, either per item or as a single total, plus its terms.
- The comparison fills in, marks the best value in every row and ranks bids by weighted score.
- Negotiate if needed; revised prices are entered as a new revision.
- Select the winner. Other bids are marked not selected and the budget and contract steps open.
What goes into a bid?
| Field | Notes |
|---|---|
| Company | From your company list or typed; a winning unregistered company is added automatically |
| Currency | TL, USD or EUR; compared in TL |
| Per item or total | Unit prices, or one total excluding VAT |
| Duration, payment term | Days |
| Advance, retention | Percent |
| Valid until | Date |
| Brand and quality | Such as "Pilsa PPR-C, TSE belgeli" |
| Quality and reference scores | 0–100, your assessment |
| Included, excluded | Such as scaffolding, transport, testing; or excavation, demolition |
An item with no price shows as such, and a "missing items" count appears in the summary, so a bid that looks cheap because it is incomplete stands out.
Which rows does the comparison show?
One row per item (unit price, line total, deviation from the estimated unit price), then total, deviation from estimate, duration, payment term, advance, retention, validity, brand and quality, missing items and weighted score. The best value is marked when at least two bids compete and is found in TL, so a euro bid is compared fairly. On iPhone you switch between a table and company cards, and you can narrow which companies are shown.
How is the weighted score calculated?
| Criterion | Default weight | Score |
|---|---|---|
| Price | 60 | Lowest total ÷ bid total × 100 |
| Material quality | 15 | Your quality score |
| Duration | 10 | Shortest duration ÷ bid duration × 100 |
| Payment terms | 10 | Bid term ÷ longest term × 100 |
| References | 5 | Your reference score |
Weights can be changed per request and reset to the default.
Example: three drywall bids
For a ceiling package on the sample project, Ataşehir Blok B, with a ₺1.100.000 estimate (company names are placeholders):
| A | B | C | |
|---|---|---|---|
| Total | ₺1.180.000 | ₺1.050.000 | ₺1.240.000 |
| Duration / payment term | 45 / 30 days | 60 / 15 days | 40 / 45 days |
| Quality / references | 80 / 70 | 60 / 60 | 90 / 80 |
| Score at 60/15/10/10/5 | 84,5 · 2nd | 82,0 · 3rd | 88,3 · 1st |
With default weights the most expensive bid wins on duration, payment term and quality. Weighting price at 80, quality 10, duration 5 and payment 5 reverses it: B 91,0, A 87,0, C 86,8. The score does not decide; it shows the owner why you chose. See the bid comparison guide.
Negotiation and revised bids
Negotiating opens a new revision of the bid with the current prices copied in; the old revision is kept as revised. The comparison uses each company's latest revision, so the first price and the final price both stay on record. Bid statuses are received, negotiating, revised, selected and not selected.
What does the suggestion button do?
"Öneri iste" asks AI to summarise the bids in the table: a recommended company with reasons, up to six concrete risks and up to six negotiation points. It needs a connection and is commentary only; Santix has already calculated the scores and you decide. See AI assistance.
After the decision
Selecting a bid opens a decision sheet: add a new budget line, update an existing one, or leave the budget alone, then "Sözleşme hazırla" opens the contract wizard with the company and trade filled in. See progress payments and budget and contract templates.
Company records
The company list is shared across your projects: name, trade, tax number (10 digits) or national id (11 digits), contact, phone, email, IBAN (validated, TR plus 26 characters), a 0–5 rating and notes. Site and project managers add companies. A subcontractor user linked to a company sees only that company's bid, contract and documents.
Who sees what?
Owners have full access. Project and site managers see and edit requests and bids and make the decision. Field engineers open requests and see their own requests but not bid prices. Subcontractors see only their own company's bid record. Architects and viewers see nothing in purchasing. See roles and permissions and the subcontractor role.
What purchasing does not do
- It does not send requests to suppliers, and suppliers do not upload bids themselves.
- Web price research is not available yet.
- No purchase orders, delivery notes or stock.
- It does not run public tenders; it is built for private sector bid collection.
Why not a spreadsheet and WhatsApp?
Bids arrive as photos and PDFs and someone retypes them; typos, outdated bids and a forgotten advance clause slip through. In Santix each bid is entered against the request items, revisions are kept, foreign currency bids are compared in TL, and the chosen figures flow into the budget and the contract unchanged.
Frequently asked questions
What happens to the chosen bid?
It can open a new budget line or update an existing one, and you can go straight to drafting its contract.
Can I change the weights?
Yes, per request, and reset them to 60/15/10/10/5.
How is the price score calculated?
The lowest total scores 100; other bids score the lowest total divided by their own total, times 100.
Does Santix research market prices on the web?
Not yet. Comparison uses the bids you enter and your own estimated unit prices.
Can subcontractors see each other's bids?
No. A subcontractor linked to a company sees only that company's bid record.