Blog

Charging for materials and VAT: this is how you do it correctly
May 20, 2026 (updated) June 15, 2026) · Koen
Charging for materials and VAT: how to do it correctly. Purchasing materials, installing them, and then properly charging your customer: in the construction and installation industry, this is daily practice. Yet, this is precisely where things often go wrong with VAT. Not because it needs to be so complicated, but because colloquially, “charging on” can mean all sorts of things. Who […]
Digital work order for plumbers: hours, materials, extra work, and customer approval in one app
May 10, 2026 (updated) June 15, 2026) · Koen
Digital work order for plumbers: hours, materials, overtime, and customer approval in one app. Paper work orders work fine until you have to look them up, retype them, or explain them to a customer who didn't expect “that extra hour.” A digital work order for plumbers brings hours, materials, trips, and notes together in one place, directly linked to the right job. […]
Service order app for maintenance companies and service technicians (breakdowns, periodic maintenance, aftercare)
May 3, 2026 (updated) June 15, 2026) · Koen
Service order app for maintenance companies and service technicians (breakdowns, periodic maintenance, aftercare) Paper service orders seem cheap, until you see the hidden costs: lost orders, illegible handwriting, missing materials, and disputes afterwards. And then the administration has to retype them as well, while the schedule is already filling up with new breakdowns and maintenance jobs. With a service order app, you record service work […]
Project administration app for small construction companies: control over hours, materials, and margin per project
April 25, 2026 (updated) June 15, 2026) · Koen
Project administration app for small construction companies: control over hours, materials, and margin per project. Many small construction and installation companies rely on skilled workmanship on the ground and administration done after the fact. That works, until you notice timesheets arriving late, receipts getting lost, and “just writing it down” turning into guesswork. Then it becomes difficult to know whether a job is still profitable […]
Retention obligation for work orders and time records: how long do you have to keep what (and why)?
April 20, 2026 (updated) June 15, 2026) · Koen
Retention obligation for work orders and time records: how long do you have to keep what (and why)? Work orders sometimes seem like “just” internal notes: a few lines about hours, some materials, and a customer signature. Until a question comes from the Tax Authorities, a discussion about overtime, or an inspection of working hours. Then it turns out that work orders and time records are exactly […]
Implementing a work order app in a small construction company: step-by-step plan, roles, and pitfalls
April 16, 2026 (updated) June 15, 2026) · Koen
Implementing a work order app in a small construction company: step-by-step plan, roles, and pitfalls. Paper work orders seem harmless until you start searching for them, retyping them, correcting them, and chasing them for a signature. In a small construction company, every minute counts on the job and in the office. A work order app can streamline that administration, provided you enter the data correctly. An implementation is […]
Call-out charges, travel time, and parking costs on the work order: here's how to charge them correctly.
April 10, 2026 (updated) March 3, 2026) · Koen
Call-out charges, travel time, and parking costs on the work order: here’s how to charge them correctly. Anyone working in construction or installation technology knows that “being on location” rarely revolves solely around the work itself. You drive, you look for a place to park, you sometimes get stuck in traffic, and you pick up materials along the way. If you […]
Work order app for solar panel installers: installation and completion slip with photos, serial numbers, and signature
April 2, 2026 (updated) June 15, 2026) · Koen
Work order app for solar panel installers: installation and delivery note with photos, serial numbers, and signature. Paper work orders still work, until you run multiple installations per day, a customer asks for proof, or a dispute arises regarding additional work. With solar panels, there is extra administration involved: photos of the roof, inverter settings, serial numbers, meter cabinet, plus a clear delivery note with […]
Work order app trial period: what to look out for during your trial?
March 30, 2026 (updated) June 15, 2026) · Koen
Work order app trial period: what to look out for during your trial? You don't test a work order app to see if it “works well,” but to prove that it results in less hassle, fewer errors, and faster invoicing. And that only works if you handle the trial period strictly: with real jobs, real people, and […]
Work order app for small teams (1–10 mechanics): requirements and pricing
March 25, 2026 (updated) June 15, 2026) · Koen
Work order app for small teams (1–10 technicians): requirements and pricing. Paper work orders often work fine as long as there are only two of you and everything can still be reconstructed at the end of the week. As soon as you work with a small field service team (think 1 to 10 technicians), things go wrong in exactly the places that cost money: […]
Work order template in your own house style: here's how to do it
March 21, 2026 (updated) June 15, 2026) · Koen
Work order template in your own branding: here’s how to do it. A work order is often the last document your client sees before the invoice arrives. If that work order looks like it was put together “quickly,” it reflects poorly on the rest of your work, even if you deliver quality craftsmanship. A work order template in […]
Time tracking with GPS in construction: pros and cons
March 19, 2026 (updated) June 15, 2026) · Koen
Time tracking with GPS in construction: pros and cons. On a construction site, time tracking is rarely the problem in itself. The problem lies in the next step: lost timesheets, hours entered “quickly” afterwards, trips that can no longer be precisely traced, and disputes regarding additional work or post-calculation. GPS in time tracking becomes […]
Work order, packing slip, or order form: differences and when to use which one
March 16, 2026 (updated) June 15, 2026) · Koen
Work order, packing slip, or order form: differences and when to use which. On the construction site, in the van, or at the office: “Which form do you mean exactly?” is a question that comes up more often than many entrepreneurs would like. Work order, packing slip, order form… the words sound similar, but they correspond to different moments in your process and serve a […]
Work order app with customer approval and additional work recording
March 13, 2026 (updated) June 15, 2026) · Koen
Work order app with customer approval and additional work recording Paper work orders still surprisingly often serve as the backbone of administration in the construction and installation engineering sector. Until things go wrong. A work order gets lost, a scribble is illegible, additional work is listed on a loose note somewhere, and weeks later the customer no longer remembers exactly what was agreed upon. The consequence […]
Work order app with mileage tracking and Google Maps
March 10, 2026 (updated) June 15, 2026) · Koen
Work order app with mileage tracking and Google Maps. Every trip to a job counts towards your margin. Not only because your van uses fuel, but also because travel time and mileage are often part of agreements with clients, employee compensation, and administration for the accountant or tax authorities. Yet, in many small construction and […]
Best work order app for freelancers in construction: top 7 compared
March 3, 2026 (updated) March 3, 2026) · Koen
Best work order app for freelancers in construction: top 7 compared Paper work orders work fine until you lose a slip, have to retrieve it from your photo album hours later, or have to “reconstruct” five jobs at the end of the month. For many freelancers in construction, that is the moment when a work order app […]
Work order app with material management: what to look out for?
March 1, 2026 (updated) June 15, 2026) · Koen
Work order app with material management: what to look out for? A work order app with material management sounds like something that is primarily “convenient.” That is, until you’ve experienced a few times that a job just can’t be completed because a coupling, sealant, cable, or fastening material is missing. Or that you end up in a dispute afterwards about extra work because no one knows exactly […]
Linking work order app to accounting: Exact, Moneybird, and eBoekhouden compared
February 27, 2026 (updated) June 15, 2026) · Koen
Linking work order app to accounting: Exact, Moneybird, and eBoekhouden compared. A work order is often the moment when your profit or loss is recorded. Hours, materials, trips, overtime, customer approval—everything comes together there. If that information then still has to be manually transferred to accounting, delays and hassle ensue. And that is exactly where the value lies […]
Digital work order with photos and signature: must-have checklist
February 24, 2026 (updated) June 15, 2026) · Koen
Digital work order with photos and signature: must-have checklist. On the construction site or at a client's home, you primarily want one thing: to get the work done and move on. Yet the hassle often only sets in later. A photo is still on someone's phone, the signature is missing, and at the office, someone has to piece together from a text message, a note, and half a […]
From quote to work order and invoice: how to streamline the chain
February 21, 2026 (updated) June 15, 2026) · Koen
From quotation to work order and invoice: how to streamline the chain Many construction and installation companies have their trade well organized, but lose time and margin in administration. Not because someone isn't trying their best, but because the chain from quotation to execution and invoicing often consists of separate pieces: a quotation in Word […]
VCA and work orders: working safely and demonstrably in practice
February 19, 2026 (updated) June 15, 2026) · Koen
VCA and work orders: working safely and demonstrably in practice. Working safely on a construction site is rarely a separate “safety thing.” It is interwoven into planning, execution, material selection, communication with the client, and post-construction administration. VCA helps to organize these components structurally, but it remains a matter of human interaction: you must be able to show what you have […]
Trip logging app for construction and installation: selection criteria
February 16, 2026 (updated) June 15, 2026) · Koen
Trip tracking app for construction and installation: selection criteria. Anyone who drives from job to job with a van full of tools knows how quickly kilometers “evaporate” from the records. A few trips not recorded, the wrong project selected, an unclear private trip: it seems small, but it adds up. Not only in euros for recharged kilometers, but also in tax […]
Time tracking errors that cost you profit (and how to prevent them)
February 13, 2026 (updated) June 15, 2026) · Koen
Time tracking errors that cost you profit (and how to prevent them) You can execute a job perfectly and still leave money on the table. Not due to poor work, but due to hours that are not recorded, recorded too late, or recorded incorrectly. In the construction and installation industry, every quarter of an hour counts: for cost accounting, on the invoice, and in your planning […]
Communicating additional work to clients: sample texts and tips
February 10, 2026 (updated) June 15, 2026) · Koen
Communicating additional work to clients: sample texts and tips. Additional work is rarely the problem. The surprise is the problem. Clients are startled not only by extra costs, but especially by the feeling that they had no choice or that information arrived too late. For you as a tradesman or small construction company, the win lies in a consistent approach: direct […]
Digital signature on the work order: is it legally valid?
February 5, 2026 (updated) June 15, 2026) · Koen
Digital signature on the work order: is it legally valid? A work order is often the moment when “the work” turns into “the proof.” Hours have been worked, materials processed, additional work discussed, and the client nods: fine. That is precisely why the question recurs so often in the construction and installation industry: if that signature is placed digitally, is […]
Automate work orders: from photo to invoice in a single flow
February 4, 2026 (updated) June 15, 2026) · Koen
Automating work orders: from photo to invoice in a single flow. Paper work orders seem simple at first glance: a few lines of hours, some materials, and a signature. Until you have to process them. Orders get lost in vans, photos are scattered across phones, and the invoice is left undone because “that one order” is still missing. Automating work orders means […]
Travel time and overtime explained in the construction CLA
February 3, 2026 (updated) June 15, 2026) · Koen
Travel time and overtime explained in the construction CLA. Anyone working in construction or installation technology knows how quickly hassle arises regarding hours. One week you drive to a job just outside your municipality, the next week you are working late because the floor “really has to be finished today”. And then comes the […]
Excel vs. work order app: what do you choose as a freelancer?
February 2, 2026 (updated) June 15, 2026) · Koen
Excel vs. work order app: what do you choose as a freelancer? As a freelancer in construction or installation technology, your main goal is to get things done. Yet, a recurring task is added every day: recording what you have done, how many hours it took, which materials were used, and what trips were made. You can very […]
Photos as evidence at the workplace: best practices for your work order
January 31, 2026 (updated) June 15, 2026) · Koen
Photos as evidence in the workshop: best practices for your work order. A photo in the workshop is often more than “just a quick picture.” It is a snapshot of what you found, what you did, and why something extra was needed. That helps with invoicing, with customer inquiries, and sometimes also […]
Reducing material waste: 10 practical tips for small construction companies
January 30, 2026 (updated) June 15, 2026) · Koen
Reducing material waste: 10 practical tips for small construction companies Material waste often feels like “small bits”: a box of screws that gets lost, a few packs of plaster that get wet, a bundle of battens delivered just a little too early. Add that up over a month and you see it reflected in your margin, in extra trips, and in […]
Project administration for freelancers: a simple structure that works
January 29, 2026 (updated) June 15, 2026) · Koen
Project administration for freelancers: a simple structure that works. As a freelancer in the construction industry, your main goal is to make progress on the job. Yet your margin is often hidden in what you *don't* forget: travel time, extra materials, additional work, short trips, that one half-day of preparation. Project administration doesn't have to be large or complicated. Just consistent. A simple structure […]
Tax and Customs Administration mileage registration rules for self-employed professionals in construction: complete guide
January 26, 2026 (updated) March 3, 2026) · Koen
Tax and Customs Administration Trip Registration Rules for Self-Employed in Construction: Complete Guide Anyone who is on the road frequently as a self-employed professional in the construction industry knows how quickly the kilometers add up. A job on location, picking up materials, a quick stop at the wholesaler, back to the workshop. For the Tax and Customs Administration, all that driving is no small detail: it determines whether you have to pay taxable benefit, how much VAT correction […]
Delivery checklist: what belongs on a digital work order?
January 26, 2026 (updated) June 15, 2026) · Koen
Delivery checklist: what belongs on a digital work order? A delivery is often the moment when everything comes together: the client takes a critical look, you want to wrap things up, and the office wants the records to be correct immediately. That is precisely when things go wrong if your work order is set up too “lightly.” A casual note like “job completed” is of little help if there […]
Hour standards in construction: realistic estimates per job
January 26, 2026 (updated) June 15, 2026) · Koen
Hour standards in construction: realistic estimates per job. Hour standards in construction are often the difference between “it will fit” and a schedule that is truly accurate. Yet, in practice, standard times sometimes feel like guesswork: one team meets them effortlessly, while another consistently runs over. This is rarely due to a single cause. Usually, it is […]
Post-calculation vs. pre-calculation: how to keep construction projects profitable
January 26, 2026 (updated) June 15, 2026) · Koen
Post-calculation vs. pre-calculation: how to keep construction projects profitable. A construction project can appear perfectly profitable on paper yet turn out to be disappointing at the end. Usually, this is not due to one major mistake, but to many small deviations that add up unnoticed: an extra hour here, a forgotten material item there, a trip that wasn't recorded anywhere. With pre-calculation and […]
What is post-calculation and why is it important?
January 25, 2026 (updated) June 15, 2026) · Koen
What is cost estimation and why is it important? Cost estimation sounds like something for large contractors with a controller and three dashboards. Yet, for small construction and installation companies in particular, it is one of the fastest ways to gain more control over margins, planning, and invoicing. In construction, things rarely go exactly as budgeted. A […]
Why a cost estimate is indispensable in construction
January 25, 2026 (updated) June 15, 2026) · Koen
Why a construction cost estimate is indispensable. A job often appears profitable on paper, but in practice, you encounter surprises due to minor errors: an extra hour of work, a forgotten roll of foil, a few extra trips to the wholesaler. A cost estimate gives you immediate insight into these potential deviations. It is not a complicated report, but […]
What is additional work in construction and how do you document it properly?
January 25, 2026 (updated) June 15, 2026) · Koen
What is additional work in construction and how do you document it properly? Additional work is one of the biggest “hide costs” in construction and installation projects. Not because the extra work is necessarily wrong, but because it often arises verbally, is done quickly in between other tasks, and only reappears in the records later. Then, suddenly, it becomes a dispute: […]
Self-employed Hours Criterion 2025
January 31, 2025 (updated) January 31, 2025) · Koen
Freelancer Hours Criterion in 2025: Everything You Need to Know The hours criterion is an important rule for self-employed entrepreneurs in the Netherlands. Meeting this standard can yield significant tax benefits, such as the self-employment deduction. In this article, you will read everything about the hours criterion in 2025: the conditions, tax benefits, and how best to track your hours. […]
Atlanta Work Slip
January 28, 2025 (updated) January 31, 2025) · Koen
Atlanta work slip versus Werkbriefje.app: Choose efficiency Timesheets are essential for small construction companies and freelancers to keep track of hours, tasks, and materials. Traditionally, paper timesheets are used for this purpose, such as the well-known Atlanta timesheet. But is that still the most efficient solution? In this article, we explain the differences between paper timesheets and […]
Worksheet example
January 28, 2025 (updated) January 28, 2025) · Koen
Timesheet example: How to create a perfect timesheet. A timesheet is indispensable for small construction companies and freelancers. It not only helps you record hours and materials per project but also ensures organized administration. In this article, we show what a good timesheet looks like, which sections should be included, and […]
Werkbriefje.app vs. OutSmart
January 20, 2025 (updated) March 15, 2026) · Koen
Discover the best alternative to OutSmart: Werkbriefje.app Looking for an OutSmart alternative? Perhaps you are fed up with the umpteenth OutSmart acquisition, the complicated contracts, or the complexity of their program. Werkbriefje.app Companies like OutSmart offer solutions to digitize work processes. But which one suits your company best? We compare the key […]
Work Orders App
January 7, 2025 (updated) January 31, 2025) · Koen
Work Order App: The Complete Guide for Businesses Managing work orders is an essential process for many companies, especially in sectors such as construction, installation, and maintenance. Traditionally, work orders were kept on paper, which often led to inefficiencies, errors, and data loss. Fortunately, there is a modern solution: the work order app. In this comprehensive guide […]
Time registration
January 6, 2025 (updated) January 31, 2025) · Koen
Time Tracking: Everything You Need to Know Keeping track of hours worked is essential for good record-keeping and efficient business operations. This article covers all important aspects of time tracking, including the benefits, methods, legal obligations, and how a time tracking app such as Werkbriefje.app can make the process simpler and more effective. What is good time tracking? Definition of […]
Time tracking app
January 6, 2025 (updated) January 6, 2025) · Koen
Why choose a time tracking app? Manually tracking hours using paper forms is cumbersome, time-consuming, and prone to errors. A time tracking app offers the perfect solution by making all information available digitally. This allows you to easily track your worked hours, including vacation and overtime, and keeps everything organized in one central […]
Digitizing work orders in 2025? Discover the best app for your construction company.
December 28, 2024 (updated) January 29, 2025) · Koen
How can you digitize work orders with an app in 2025? In 2025, digital solutions are becoming increasingly important, even for small construction companies. Traditional paper work orders are increasingly making way for user-friendly apps. But how do you effectively digitize your work orders and why is this a smart choice? In this blog, we discuss the benefits of a work order […]
Werkbriefje.app vs. Simple Simon
December 8, 2024 (updated) December 9, 2024) · Koen
Werkbriefje.app vs Simple Simon: The best digital work order app for small construction companies. If you are looking for a time tracking app, you will quickly come across Simple Simon and Werkbriefje.app against. Both tools help you manage hours and projects more efficiently. But which one suits your construction company better? In this blog, we compare. Werkbriefje.app and Simple […]
What is a Work Order App? Benefits and Explanation
December 7, 2024 (updated) January 31, 2025) · Koen
What Is a Work Order App? Everything You Need to Know In the construction, installation, or other technical sectors, keeping track of work orders can be quite a chore. Paper orders get lost, details are entered incorrectly, or administration falls behind. A work order app offers the solution. But what exactly is a work order app and why […]
Buy timesheet
November 29, 2024 (updated) January 21, 2025) · Koen
Looking to buy a timesheet? Discover the digital solution for your construction company. Are you looking for timesheets to track your team's hours and material usage? Stop lugging around stacks of paper and discover a smart, digital solution: Werkbriefje.app. Instead of buying old-fashioned paper timesheets, you can easily […] with our user-friendly app
Digitizing work order
November 28, 2024 (updated) January 29, 2025) · Koen
Digitizing work orders: The smart choice for construction companies. Work orders are an essential part of your administration if you work in the construction or installation industry. However, handwritten work orders are often disorganized, get lost, or take a lot of time to process. Digitizing work orders is the solution for small construction companies and freelancers who want to work more efficiently and more […]
Create your own digital work order
November 27, 2024 (updated) January 29, 2025) · Koen
Create a digital work order yourself: Here’s how to do it easily and efficiently! Are you tired of handwritten work orders that get lost or are unclear? Switching to digital work orders is the solution for small construction companies and freelancers in the construction sector. Whether you are a painter, carpenter, plasterer, or landscaper, creating a digital work order saves time, prevents errors […]