Illustrative photo.
Most bad software quotes are not caused by bad developers. They are caused by bad briefs. When a business describes its project in two sentences, every developer fills in the blanks differently, and the quotes that come back describe different projects at different prices. A clear project brief fixes this: it aligns expectations, produces comparable quotes, and becomes the reference point for the entire build. This guide from Windsor web app developers covers exactly what to include, section by section.
The problem, in plain language
Start with the problem, not the solution. What is broken, slow, or manual today? Who feels the pain, and what does it cost in time, money, or errors? One focused paragraph here does more work than three pages of feature ideas, because it lets the developer suggest better solutions than the ones you imagined. If you lead with features, you get quotes for features; if you lead with the problem, you get thinking.
Who will use it
List every type of user: administrators, staff, customers, suppliers, or partners. For each group, note what they need to accomplish and how comfortable they are with technology. An app used by office staff on desktops is a fundamentally different design challenge than one used by technicians on phones in the field. Developers who understand the users make better day-to-day decisions without needing to ask you about every detail.
Must-have features versus nice-to-haves
Separate the two ruthlessly. Must-haves are the features without which the project fails; everything else belongs in a later phase. A brief with thirty must-haves is a brief without priorities, and it will be quoted accordingly, which is to say expensively and vaguely. If you can name and rank your top five, a developer can propose a sensible first phase and a realistic price for it.
What success looks like
Define how you will know the project worked, in terms you can measure. Reduce quoting time from two days to two hours. Let customers book without calling the office. Eliminate double entry between sales and accounting. Measurable outcomes keep everyone honest during the build, and they give you a way to evaluate the finished result that goes beyond whether it turns on.
Integrations, data, and technical constraints
List everything the app must connect to: payment processors, accounting software, existing databases, email or SMS services, and any hardware like barcode scanners. Note the constraints too: it must work on older phones, it must meet specific privacy or industry requirements, years of existing data must be migrated cleanly. Surprises in this section are the single most common source of mid-project cost increases, so be thorough here even if the rest of the brief is light.
Timeline, budget range, and how you will decide
Share your timeline honestly, including what is driving it, and give a budget range rather than a single number. Ranges get you honest feedback about what is achievable; secrecy gets you padded quotes designed to cover every possibility. Also say how you will choose between proposals: what matters most to you, price, timeline, relevant experience, or ongoing support? Developers quote far better when they know the criteria they are being judged against.
What happens after launch
State your expectations for support, maintenance, and future phases up front. Do you need a care plan, training for your staff, written documentation, or a second phase scoped later? Projects that address life after launch in the brief receive cleaner proposals and far fewer surprises in month three, when the build team has moved on to other work.
A brief does not need to be long
One to two pages covering these sections is plenty. You are not writing a technical specification; you are giving a competent developer what they need to ask smart questions and quote accurately. The conversation that follows the brief matters more than the document itself, but without the document, that conversation never gets properly started.
Example: a brief that gets good quotes
Consider a Windsor HVAC company that wants online booking. A weak brief says: we need a booking website. A strong brief says: our dispatchers take forty calls a day to book service visits, and we lose after-hours requests to competitors; we need customers to book standard service visits online, see real technician availability, and receive confirmations by text; office staff need a dispatch view and customers need a simple mobile flow; it must work with our existing scheduling data; our budget range is X to Y and we want to launch before the busy season. The second brief gets accurate, comparable quotes. The first gets guesses.
Notice what the strong brief does not include: no technical specifications, no framework preferences, no page-by-page design. It describes the business reality and lets developers propose the technical approach. That is the correct division of labour, and it is what separates briefs that produce partnerships from briefs that produce arguments.
How detailed should a project brief be?
Be detailed about the problem and the outcomes, and lighter on technical solutions. Describe what the software must achieve and the constraints around it, then let the developer propose how to build it. That division of labour plays to each side's strengths.
Should I include my budget in the brief?
Yes, as a range. It saves everyone time: developers can tell you immediately whether your goals fit the budget, and you avoid receiving quotes padded for uncertainty. A hidden budget helps no one.
Can I write a brief if I am not technical?
Absolutely. The best briefs are written in plain business language by the people who live with the problem. Technical specifications are the developer's job; your job is to describe the problem, the users, and what success looks like. If you can do that clearly, you have done the hard part.
Have a project in mind but not sure how to brief it? Send us what you have, even if it is rough notes. Get a free quote and we will help you shape it into a brief that gets accurate quotes, whether you end up building with us or not.