Architect- & Engineer-Led Buying Support Based in İstanbul, Türkiye
SerSourcing is a sourcing and purchasing-support service operated by CFY Mühendislik Mim. Dan. Yapı Malz. İnş. San. ve Tic. Ltd. Şti. Our contact office is in Maltepe, İstanbul, with primary focus on steel houses, steel villas, prefabricated buildings, steel warehouses, industrial factory buildings, hangars and structural/architectural building materials.
Operated in Maltepe, İstanbul by CFY Mühendislik Mim. Dan. Yapı Malz. İnş. San. ve Tic. Ltd. Şti.. Your goods purchase contract and product payments stay directly between your company and the selected Turkish manufacturer.
Maltepe, İstanbul · Marmara Industrial Corridor
Founding Partners & Technical Leadership
SerSourcing is operated by CFY in Maltepe, İstanbul, bringing together architectural, civil engineering and interior architectural discipline for structured building-material purchasing.
İdris YAĞMAHAN
Architect · Co-FounderPrimary buyer contact leading architectural specification reviews, drawing interfaces, supplier shortlisting and scoped factory visit reporting.
Celalettin YAĞMAHAN
Civil Engineer · Co-FounderSupports structural steel profile, cold-formed framing, tolerance and industrial construction-component questions across purchasing briefs and technical reviews.
M. Furkan YAĞMAHAN
Interior Architect · Co-FounderFocuses on interior boards, acoustic & surface finishes, architectural fittings, sample alignment, export packaging details and multi-supplier order coordination.
How SerSourcing Protects Buying Clarity in Türkiye
Every engagement separates verified facts from assumptions so international contractors, importers and project teams can approve orders with documented confidence.
Local presence for single visits or structured programmes
We help international buyers who need a technical point of contact in Türkiye to organise supplier information, visit a factory or follow an agreed purchase process. The assignment can be a single scoped check or a series of defined tasks across a multi-supplier project.
Start with the product and the buying decision
A useful sourcing brief explains more than the product name. It sets out the intended application, quantities, specifications, acceptable alternatives and commercial constraints. These details allow suppliers to respond on a comparable basis.
Our approach connects the product questions with the buyer’s next decision. Are you choosing a manufacturer, checking an existing quotation, deciding whether to release a production stage or preparing for dispatch? We scope the work around that specific decision gate.
Multidisciplinary founding perspective on building products
CFY brings together three founding partners across construction disciplines: Architect İdris YAĞMAHAN (primary buyer contact), Civil Engineer Celalettin YAĞMAHAN and Interior Architect M. Furkan YAĞMAHAN. For building-product enquiries, this supports a structured discussion of architectural drawings, cold-formed & structural steel profiles, interior boards and finishes, dimensional tolerances, system interfaces and export packaging.
Specialist engineering calculations, accredited laboratory testing and formal product certification remain separate services arranged with qualified third-party bodies when required for your project. We aim to make supplier information easier to assess: what the supplier proposes, what the documents identify, what can be observed on site and what still needs a qualified technical answer.
Representation and direct supply are clearly separated
CFY may act as a buyer-support service provider or, under a separate commercial quotation, as a seller of goods. We explain the commercial role for each assignment up front so you always know who is responsible for the service deliverables and who is responsible for the product contract.
We explain known supplier relationships and supplier-related fees before the engagement. If a new connection or fee arrangement arises during the assignment, we disclose it before recommending that supplier or asking you to make a related purchasing decision.
Evidence you can use after the visit
A visit report should help your team make a decision after the visit is over. We record the agreed scope, relevant observations, available evidence and unresolved points. If access to an area, a document or a production stage is unavailable, the report states that clearly rather than implying completion.
This is also why we discuss specialist work separately: a visual observation, a dimensional check, a laboratory test and a formal conformity assessment answer different questions.
Two Strictly Separated Commercial Modes
Independent Buyer-Side Sourcing & Field Verification
- Remunerated transparently by the buyer under published fixed EUR fees.
- Your company contracts and pays the Turkish manufacturer directly for goods.
- No hidden markups or undisclosed third-party sales commissions.
Direct Supply by Operating Company (CFY) When Requested
- Applies only when the buyer explicitly asks CFY to quote as direct seller/exporter.
- Disclosed upfront in writing on a separate commercial quotation.
- Never blended into neutral multi-supplier comparison tables.
Explore Our Scoped Divisions Across All 7 Languages
Navigate directly to fixed-scope services, construction material sectors, buyer workflows or practical procurement checklists.
10 Scoped Services
Desk checks, supplier shortlists, factory visits, technical reviews, quote comparisons, order follow-up and loading supervision.
Browse All Services16 Steel, Prefab & Building Sectors
Steel houses & villas, prefab homes, steel warehouses & hangars, sandwich panels, boards, insulation, doors/windows, stone and fit-out.
Explore 16 Sectors4 Buyer Profile Solutions
Tailored workflows for construction contractors, material importers/distributors, custom-product buyers and remote buying desks.
View Buyer Solutions8 Procurement Guides
Step-by-step checklists on preparing RFQ briefs, verifying Turkish factories, reading technical quotes and planning export loading.
Read Buying GuidesVerified Legal Identity & Marmara Industrial Access
Positioned on the Asian side of İstanbul for rapid field deployment across Tuzla, Gebze, Çayırova and Darıca industrial zones, plus scheduled routes nationwide.
Corporate & Operational Identifiers
| Field | Verified Detail |
|---|---|
| Brand | SerSourcing (sersourcing.com) |
| Operating Company | CFY Mühendislik Mim. Dan. Yapı Malz. İnş. San. ve Tic. Ltd. Şti. |
| Founding Partners | İdris YAĞMAHAN (Architect) · Celalettin YAĞMAHAN (Civil Engineer) · M. Furkan YAĞMAHAN (Interior Architect) |
| Primary Sourcing Contact | İdris YAĞMAHAN — Architect & Co-Founder |
| Contact Office | Cevizli Mah. Orhan Gazi Cad. 24/B, Maltepe, İstanbul, Türkiye |
| Primary GSM / WhatsApp | +90 (505) 507 04 18 |
| Office Landline (Secondary) | +90 (216) 614 04 34 |
| Tax Office & Tax ID | Etimesgut VD · 2091289512 |
| MERSİS / Trade Registry | 0209128951200001 · Registry No: 436556 |
| Core Field-Service Area | Maltepe, Kartal, Pendik, Tuzla, Gebze, Çayırova, Darıca |
Maltepe Head Office & Core Corridor
Cevizli Mah. Orhan Gazi Cad. 24/B, Maltepe, İstanbul, Türkiye
Secondary office landline (reference only): +90 (216) 614 04 34
How SerSourcing compares with commission agents, inspection-only firms and trading portals
International buyers in Türkiye typically encounter three incomplete models: commission intermediaries, post-order-only inspection firms, or resellers who hide the real manufacturer. SerSourcing combines technical sourcing, factory verification and shipment control under published fixed EUR fees.
| Criteria | SerSourcing (Architect & Engineer Buying Office) | Commission Sourcing Agents | Inspection-Only Agencies (PSI / CLS) | Trading Portals & Resellers |
|---|---|---|---|---|
| Factory Identity & Goods Contract | Open-book: you see the real manufacturer, contract directly and pay the factory directly | Often masked or restricted to protect ongoing commission | Cannot find or shortlist manufacturers (you must already have a PO) | Hidden: portal invoices as seller and conceals the underlying plant |
| Fee Structure & Cost Alignment | Published fixed EUR fees (€190–€3,950) — fee does not inflate when order value grows | Percentage of order value — higher factory prices increase agent commission | Per man-day inspection fee only; no commercial quote normalisation | Undisclosed trader margin embedded inside unit product prices |
| CAD / BOQ & Unit Normalisation | Led by Architect, Civil Engineer & Interior Architect co-founders (€/m², LME + conversion, gauge/coating) | Generalist sales brokers across unrelated consumer goods | Checklist-only visual inspection; no pre-contract BOQ comparison | Limited to items the trader chooses to resell |
| On-Site Factory Audit, PSI & CLS | End-to-end: pre-deposit audit (SS-VISIT €490 / SS-TECH €790), PSI (€490) and container loading (€390) | Informal uncalibrated visits or outsourced without technical scope | Strong on PSI/CLS, but zero pre-deposit supplier search or commercial follow-up | Self-inspected by the seller (not independent buyer representation) |
| Multi-Supplier Consolidation & Retainer | Multi-plant readiness alignment (SS-MULTI €790) & 30-day Buying Office plans (BO-15/30/55) | Ad-hoc coordination tied to commission volume | Single-day, single-site dispatch tickets only | Bundled under opaque single-reseller invoicing |
| European Language Architecture | Full 406-page technical architecture across 7 languages (EN, TR, DE, FR, BG, RO, IT) | Typically 1–2 languages with thin landing pages | Global corporate templates not tailored to Turkish industrial zones | Catalogue grids with minimal technical specification depth |
Commercial role disclosure: Under SerSourcing buyer representation, goods contracts and payments remain directly between you and the manufacturer, and our remuneration is the agreed fixed EUR fee. Any separate direct supply offered by CFY Mühendislik Mimarlık is always quoted explicitly as a seller offer—never mixed with representation.
Related Scoped Services, Sectors & Guides
How It Works
Understand the six steps from initial purchasing brief and scope confirmation to documented findings, open items and your next buying decision.
Prices & Packages
Published EUR tariff for all 13 standard services, 3 combined packages, 30-day buying-office plans, core-area travel rules and payment terms.
Sample Report
Inspect the structure of a SerSourcing report—including the editable template and three fictional training examples separating observations from statements.
Contact
Contact Architect İdris YAĞMAHAN via GSM/WhatsApp or send a structured purchasing brief to our Maltepe, İstanbul office.
Frequently Asked Questions
SerSourcing is operated by CFY Mühendislik Mim. Dan. Yapı Malz. İnş. San. ve Tic. Ltd. Şti., registered in İstanbul with its contact office in Cevizli Mah., Maltepe.
Your primary contact is Architect İdris YAĞMAHAN, who reviews briefs, defines workable scopes and coordinates reporting and agreed field attendance.
No. SerSourcing provides scoped commercial and technical buying support, factory visits and purchasing coordination. Accredited testing, statutory inspection and engineering certification are arranged separately with qualified third-party bodies when needed.
No. SerSourcing operates as a sourcing and buying-support service. Where CFY separately offers direct supply of goods as a seller, that commercial role is stated explicitly in a separate supply quotation.
Yes. You can start with a summary of the product category and purchasing question, and request a confidentiality discussion before sharing sensitive drawings or commercial schedules.