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OpenConstructionERP auf Deutsch

Twelve films on one German housing project, from set-up to the cost base: quantities, the bill, GAEB, pricing, award, purchasing.

1. Projekt und Verantwortung klären 7:17 · How do I set up a new project with two variants, a budget cap with a reserve, and clear decision owners?
2. Dokumente und Entscheidungen sichern 5:59 · How do I resolve a clash between two drawings with an RFI and make sure the team uses the approved revision?
3. Mengen aus PDF und DWG ermitteln 5:55 · How do I measure areas and lengths on a PDF plan and count items in a DWG so every quantity can be traced to its source?
4. BIM-Modelle verstehen und nutzen 5:40 · How do I filter an IFC or RVT model by storey and element type and export the selection to CSV?
5. Ein Leistungsverzeichnis aufbauen 5:02 · How do I structure a Leistungsverzeichnis with sections, item numbers, descriptions, units and checked quantities?
6. Einheitspreise und Kosten nachvollziehen 6:36 · How is a unit rate built from labour, material and equipment, and how does a change in labour time change the price?
7. GAEB-Dateien kontrolliert austauschen 5:34 · How do I export a bill as GAEB X83, get priced X84 back and check that the exchange really worked?
8. Angebote prüfen und Vergabe vorbereiten 3:04 · How do I compare bids on the same scope when the lowest one is missing an item, and record the award rationale?
9. Abhängigkeiten und Ressourceneinsatz planen 4:31 · How do I link activities, trace a late delivery through the schedule and assign a crew to the new dates?
10. Material und Teillieferung verfolgen 7:01 · How do I track an order, a partial delivery and the remaining quantity, and book what actually arrived into site stock?
11. Kostenquellen und Ressourcen anpassen 7:35 · How do I take a rate from a regional cost database, check its origin and scope, and reprice it with my own labour and plant rates?
12. Vom vollständigen LV zur Kostenbasis 10:14 · How do I turn a fully priced bill into a checked, locked cost base and budget before tender award?

Getting Started

Install OpenConstructionERP, then learn the cost database, build an estimate and turn cost into a price.

1. How to Install OpenConstructionERP 4:42 · How do I install OpenConstructionERP, add my team and create my first project?
2. Construction Cost Database: Check a Unit Rate 4:02 · Where does a unit rate come from, and how do I adjust it to my own crews and market?
3. Build a Construction Estimate Step by Step 4:47 · How do I build a priced estimate from an empty page, with every rate traced to its source?
4. Construction Pricing: Overhead, Profit & Contingency 3:54 · How do I turn a direct cost into a bid price with overhead, profit and contingency and send it safely?
5. Bid Leveling: Three Quotes, One Job 3:10 · How do I compare three subcontractor quotes for the same job and pick the real low bid?
6. Budget vs Actual: Track Every Dollar 3:22 · How do I track the real cost of a job against the budget and forecast where it will finish?
7. Build the Schedule: What Cannot Slip 3:03 · How do I build a schedule from my estimate and find which tasks cannot slip?
8. Manage Your Subs: Pay, Hold Back 3:13 · How do I run a subcontractor from signed order to final payment, with changes approved and retainage held?
9. On Site: Log, Inspect, Fix 2:58 · How do I take a site problem from the daily log through inspection, non-conformance and punch item to a verified fix?
10. The Big Picture: KPIs to Portfolio 2:35 · How do I see at a glance which of my jobs needs attention today?

Canada: Ontario Construction

Price, tender, bill and close out an Ontario job: HST, CCDC 2 draws, the 28-day payment clock, holdback, change orders and substantial performance.

1. Price a Construction Job 4:49 · How do I price a Toronto job with Canadian markups and bond, and why does HST stay off the bid?
2. Tender Work to Subcontractors 4:23 · How do I check a suspiciously low sub bid before I carry it, and award the subcontract?
3. CCDC 2 Monthly Progress Draw 4:57 · How do I bill a monthly progress draw on a CCDC 2 job with Ontario's 10% holdback?
4. The Construction Payment Clock 4:35 · When does the owner have to pay my invoice in Ontario, and what happens if no notice of non-payment comes?
5. Manage Construction Change Orders 4:45 · How do I give notice, price and get approval for a change under CCDC 2 when we hit unforeseen rock?
6. Schedule to Substantial Performance 4:48 · What is substantial performance in Ontario, and how do I get my job there and start the holdback clock?

Québec : la construction en français

Five lessons in French for Québec: start in French, estimate with GST/QST, BSDQ sub bids, billing with holdback and legal hypothec, acceptance of work.

1. Démarrer avec OpenConstructionERP en français 3:46 · How do I use the software in French and map its France-French terms to Québec site vocabulary?
2. Estimer un projet de construction 4:17 · How do I price a Montréal job with markups, and where do GST, QST and my RBQ licence number go?
3. Soumissions et BSDQ 4:30 · Can I accept the lowest BSDQ bid if it arrived without the required bid bond?
4. Facturation, retenue et hypothèque légale 4:37 · How do I prepare a payment application with contract retention in Québec and keep my legal hypothec?
5. Réception des travaux et déficiences 3:44 · What does réception des travaux trigger in Québec, and how do I track deficiencies to verification?

Gestion de chantier

Four French lessons on running a job: justify the budget, buy and track stock, log site hours and equipment, invoice and read the balance.

1. Budget de chantier : justifier chaque coût 5:06 · How can I explain every line of my project budget before we commit to the site?
2. Achats et stock : suivre les quantités 4:36 · Why do 1,000 ordered bags leave only 600 in stock, and how do I trace every difference?
3. Chantier : suivre les heures et le matériel 5:22 · What do 64 crew hours really tell me, and how do I link them to measured work and equipment waiting time?
4. Facture et paiement : comprendre le solde 5:39 · Why is 12,000 still outstanding when 30,000 of work has been invoiced?

Dal computo metrico allo svincolo della ritenuta

Eight lessons follow one building project and one thread of money, from reading the bill of quantities to releasing the retention, as the contractor's site office.

1. Come leggere il computo metrico prima di fare l'offerta 4:25 · How do I check a computo metrico estimativo line by line before I bid, and which part of the total can be discounted?
2. Ribasso d'offerta: analisi prezzi e margine 4:39 · How far can I lower my bid before the job loses money, once site overheads are counted?
3. Subappalto: confrontare le offerte e scegliere l'impresa 4:59 · How do I compare three subcontractor bids fairly when the lowest one leaves out a line?
4. Giornale di cantiere: documentare imprevisti ed extra 4:32 · How do I record unexpected ground conditions on the day so the extra foundations get paid?
5. Stato di avanzamento lavori: dal certificato alla fattura 4:57 · How do I get from site measurements to a progress certificate and an invoice with the right retention?
6. Consuntivo di cantiere: dove è finito il margine 4:45 · How do I find out which chapters lost margin, and what the client owes me for a late payment?
7. Fine lavori: collaudo e svincolo della ritenuta 5:09 · What do I need to get the held-back retention released and invoiced at the end of the job?

从投标到结算：每一分钱都对得上

Eight lessons follow one Chinese office-building contract from bid price to final account audit, covering the GB/T 50500-2024 bill of quantities, payments, changes, claims and cost control.

1. 工程量清单投标价怎么算：四大块与增值税陷阱 5:03 · How do I build a bid price in four blocks under the new Chinese standard without charging VAT twice on a provisional sum?
2. 预付款基数怎么核对：签约一周的三笔钱与三张保函 5:25 · How do I calculate the advance payment, the safety fee and the retention correctly in the week the contract is signed?
3. 暂估价招标：比价、清标、定标，最低价未必最省 5:20 · How do I compare three bids for a provisional-sum package when the lowest one leaves out a room?
4. 进度款怎么算：干了361万，为什么只到账252.7万 5:15 · How do I calculate the monthly progress payment on a cumulative basis with an 80% payment ratio?
5. 变更与签证：口头指示变书面，按合同期限报价 5:05 · How do I turn a verbal instruction from the client's representative into a priced change within the contract deadlines?
6. 材料调差与费用索赔：钢筋涨价和停工7天怎么算 5:17 · How much of a rebar price rise and a 7-day stoppage can I really claim from the employer?
7. 成本核对：产值、目标成本与实际成本，把超支拆到原因 5:17 · How do I split a project cost overrun into causes I can claim from the employer and causes I must absorb?
8. 竣工结算审核：送审3,701.18万，审定3,664.7万 5:25 · Why does the employer's audit cut a final account, and how do I get the last payment and retention?

Жилищна сграда: от КСС до гаранциите

Nine lessons follow one Bulgarian residential building from the bill of quantities and bid to Act 19 payments, changes, final act, warranties, cash flow and the site diary.

1. Акт 19: от изпълнените СМР до сумата за плащане 2:21 · How do I turn the work done this month into an Act 19 and the amount I can invoice?
2. КСС и оферта: импорт от Excel, проверка на цените и ДДС 1:57 · How do I import a bill of quantities from Excel, check the prices and add VAT to get a bid total?
3. Анализ на единична цена: материали, труд, механизация и печалба 2:14 · How do I explain a unit price, such as EUR 146 per m3 of concrete, as materials, labour and plant plus overheads and profit?
4. Договор и линеен график: срок, аванс и етапи на строителството 2:18 · How do I put the contract term and advance into the platform and show on a linear schedule when each act and payment falls due?
5. Избор на подизпълнител: сравнение на оферти по цена и срок 1:58 · How do I choose between three subcontractor bids when the cheapest one does not fit the schedule?
6. Заменителна таблица и анекс: как се отчитат промените в СМР 2:03 · What is the difference between a substitution table and an annex, and how do I record each one?
7. Окончателен акт: остатък от аванса, приемане и гаранции 2:17 · How do I issue the final act so the advance is recovered exactly, and set up the warranty periods?
8. Бюджет и паричен поток: кога строителният проект остава без пари 2:08 · How do I check whether the developer's money lasts from Act 14 to Act 16, given the buyers' payment schedule?
9. Строителен дневник и проверки: забележки, срокове и проследяване 2:03 · How do I keep the weekly site diary, record a supervision inspection and track every defect to its deadline?

Obra pública y privada en España: de la oferta BC3 a la liquidación

Eight lessons following one public works contract in Spain: BC3 import and bid with baja, subcontractor comparison, precio contradictorio, monthly certification, cost-value control, handover and settlement, then private works with retention and the site diary.

1. Certificación de obra: del avance mensual al cobro 3:21 · How do I turn this month's measured progress into a certificación de obra and know how much I will be paid?
2. Importar BC3 y preparar una oferta de obra: PEM, gastos y baja 2:40 · How do I import the BC3 from a tender, add overheads and profit, and prepare a bid with a baja without losing the original budget?
3. Comparativo de ofertas de obra: precio, alcance y adjudicación 2:10 · Is the cheapest of three subcontractor bids really the cheapest once the scope is the same, and how do I award it with its purchase order?
4. Precio contradictorio: valorar y aprobar un cambio de obra 2:09 · A client asks for a unit of work that is not in the project: how do I build its precio contradictorio and get it approved?
5. Control de costes de obra: cierre de mes y margen real 2:09 · Certifying is not earning: how much money has the job really made this month, and what margin do I forecast at the end?
6. Recepción y liquidación de obra: repasos, certificación y garantía 2:00 · When is a public works contract really closed: what happens at the recepción, the snag list, the final certification and the guarantee until the liquidación?
7. Obra privada: certificación, retención del 5 % y factura 2:43 · On a private job, does the invoice carry VAT, and what happens to the 5% the client withholds from each certification?
8. Diario de obra e inspecciones: órdenes y no conformidades 1:53 · When someone asks who said what on site, where is the proof: how do I link the diary, the orders book, the inspection and the non-conformity?

Kinderhaus-Kostenkette nach DIN 276: vom Kostenrahmen zur Kostenfeststellung

One municipal building project in eight lessons: the six DIN 276 cost stages from Kostenrahmen to Kostenfeststellung, GAEB tendering, bid comparison under VOB/A, site diary, variations and interim invoices under VOB/B, and acceptance.

1. Kostenrahmen nach DIN 276 erstellen 3:45 · How do I set up a project in Germany and give the client a first cost figure, the Kostenrahmen to DIN 276, before there is a plan?
2. Kostenschätzung nach DIN 276 erstellen 3:28 · How do I turn the first design into a Kostenschätzung and show the council exactly what changed against the Kostenrahmen?
3. Kostenberechnung nach DIN 276 3:36 · How do I build the Kostenberechnung at second level of DIN 276 and justify its difference to the Kostenschätzung before the council decides to build?
4. Kostenvoranschlag und GAEB 3:40 · How do I price the Rohbau bill of quantities myself, report the Kostenvoranschlag to the client, and send the bill to bidders as GAEB without my prices?
5. Vergabe im Bauwesen 3:43 · How do I compare three bids for the Rohbau, clarify a suspiciously low price under VOB/A and prepare the award?
6. Baubeginn organisieren 3:27 · How do I set up the construction schedule and keep a site diary that still protects me when a claim comes later?
7. Nachträge und Abschlagsrechnungen prüfen 4:02 · How do I check two Nachträge and two Abschlagsrechnungen before the client pays, with the 5% Sicherheitseinbehalt calculated by the platform?
8. Bauabnahme und Schlussrechnung 3:45 · How do I run the formal Abnahme, record the defects, check the Schlussrechnung and close the cost chain with the Kostenfeststellung?

Hrvatska: od ugovorenog troškovnika do financijskog stanja projekta

Five lessons on one Croatian building contract: Excel bill import, supplier invoices with VAT reverse charge, a subcontractor with retention, the first interim statement with a Gantt chart, and the project financial position with extra quantities.

1. Ugovoreni troškovnik: uvoz iz Excela 4:10 · How do I bring the signed Excel troškovnik into the app so that the total matches the contract, and save it as the contracted version?
2. Ulazni računi povezani s troškovnikom 4:28 · How do I enter supplier invoices, link them to the contract bill and see what has been spent, with and without VAT?
3. Podizvođači: ugovor, situacija i plaćanje 4:50 · How do I contract earthworks to a subcontractor, check its first situacija against the site and pay it with a 5% retention?
4. Privremena situacija iz izvedenih radova 4:45 · How do I build a Gantt chart from the bill, record progress with evidence and issue the first privremena situacija to the client?
5. Financijsko stanje projekta i višak radova 5:13 · Are we making money on this project, and how do I record extra quantities and prepare the final statement?

UK: Tender to Variation on a JCT Building Job

Six lessons follow one UK job in OpenConstructionERP: pricing an NRM 2 tender, comparing subcontract bids, a JCT interim payment with retention, Construction Act payment notices, CIS and the VAT reverse charge, and valuing a Variation.

1. How to Price a Construction Tender (NRM 2) 5:53 · How do I price a tender on an NRM 2 bill so that every cost is counted only once?
2. How to Compare Subcontractor Bids 6:01 · How do I compare three subcontractor bids like for like, when the cheapest one has left out a line?
3. JCT Interim Payments and Retention 6:25 · How do I raise a monthly interim application on a JCT contract and work out the retention the client keeps?
4. Payment Notice vs Pay Less Notice 6:27 · Which four dates decide what a subcontractor is paid under the Construction Act, and how do I track them and rescue a missed payment notice?
5. CIS Deductions and VAT Reverse Charge 6:34 · What do I actually pay a subcontractor after the CIS deduction, and how does the VAT reverse charge fit in?
6. How to Value a JCT Variation 5:54 · How do I value a JCT Variation from the bill and record it until the contract sum moves?

Browse by task

Setup · Cost database · Estimating · Quantity takeoff · BIM models · BOQ & GAEB · Markups & tax · Tendering & award · Contracts · Progress billing · Payments · Retention / holdback · Change orders · Scheduling · Purchasing & stock · Site control · Budget control · Handover · Documents & RFIs · Project setup