Clients buy shipped software. Hours are just how you price it.

Chapter 01

The business

A web and app development agency sells one thing: working software that solves a client's business problem. That might be a site that brings in leads, a store that takes orders, or an app that runs part of their operations. The code is how you deliver it. Clients judge you on outcomes, communication and reliability, and rarely on the framework you chose.

Most agencies start as one freelancer and grow in stages. Each stage has a different job for the founder:

What makes this business work

• Recurring revenue. Project work is lumpy. Maintenance, hosting and growth retainers smooth out cash flow. Aim for 30–50% of revenue to be recurring.
• A repeatable process. The same discovery, proposal, contract, build and handoff steps every time. That is what makes estimates accurate and quality consistent.
• A clear specialty. "We build Shopify stores for food brands" closes faster and at higher prices than "we do websites".
• Protected margin. Clear scope and change requests keep projects profitable. Unpaid extra work is the most common way agencies lose money.

Chapter 02

Services & price ranges

The typical service catalog, with indicative price ranges for freelancers and small agencies serving clients in North America and Western Europe. Rates vary a lot by region, niche and reputation. Use the ranges to sanity-check your quotes, not as fixed prices.

Add-ons that raise the value of every project

• Copywriting
• Brand & logo
• Photography sourcing
• Analytics & tracking setup
• Email marketing integration
• Hosting & DNS setup
• Training videos
• Accessibility (WCAG 2.2 AA)
• Content migration
• Multilingual setup

Chapter 03

Positioning & niche

Positioning is the answer to "why should I hire you instead of the 500 other people who build websites?" A specialist can charge more, writes proposals faster (the problems repeat) and gets referrals more easily (people remember what you do).

Write your positioning statement

We help [specific client] achieve [business outcome] by building [type of product], unlike [alternative], we [your difference].

Example: We help independent fitness studios get more members by building booking-ready websites and apps. Unlike template builders, we connect class scheduling, payments and email into one system you never have to fix yourself.

Specializing doesn't mean turning down other work. It changes what you advertise. You can still take a good project outside your niche.

Chapter 04

Pricing & rate calculator

Pricing is the biggest lever on profit. Most new freelancers undercharge because they divide a salary by 2,080 hours. But a freelancer bills maybe 50–70% of their working time. The rest goes to sales, admin, learning and gaps between projects, and you also pay your own tax, tools, insurance and time off.

Rate calculator

Work out the minimum hourly rate you need, then a quote for a project. The example values are for a solo developer; replace them with your own.

Pricing rules of thumb

• Offer three options. Essential, Recommended and Premium. Most clients pick the middle one, and it stops "yes or no" decisions turning into "no".
• Charge for discovery. A paid discovery or roadmapping phase ($1,500–$7,500) produces the spec you need to quote accurately and filters out tire-kickers.
• Raise rates every year, and on every new client once your calendar is more than 80% full.
• Never discount without removing scope. Cut features, not your rate.

Chapter 05

Finding clients

New agencies usually get their first clients from their own network and marketplaces, then move toward referrals and inbound leads. Pick two channels and do them consistently before adding more.

Your portfolio is your storefront

Show 3–6 case studies, not 30 screenshots. Each one should cover the client's problem, what you built, the result in numbers ("bookings up 40%", "page load from 6.1 s to 1.4 s") and a client quote. No client work yet? Build two realistic concept projects for your niche and label them as concepts.

Chapter 06

The sales process

The same steps every time, from first contact to a paid deposit. Writing each step down lets you see where deals get stuck.

1. Inquiry

   Reply within one business day. Send a short intake form: goals, budget range, deadline, decision-maker, links to examples they like.

2. Qualify

   Check BANT: Budget, Authority, Need, Timeline. If the budget is well below your minimum, say so politely and refer them on.

3. Discovery call (30–45 min)

   Ask more than you talk. What problem are they solving? What happens if they don't solve it? How will they measure success? What have they tried?

4. Paid discovery (optional)

   For complex projects, sell a 1–3 week roadmapping phase that produces requirements, a sitemap or user flows, and an accurate estimate.

5. Proposal

   Send within 2–3 days, ideally walked through on a call rather than emailed cold. Include three options.

6. Contract & SOW

   Master services agreement plus a statement of work for this project. Signed electronically.

7. Deposit invoice

   No work starts before the deposit clears. This is the single most important rule in the handbook.

8. Kickoff

   Book the kickoff meeting, share the project board, collect access and assets.

Discovery questions that surface the real project

Chapter 07

Proposals & SOWs

A proposal persuades; a statement of work (SOW) defines. The proposal says why you and what the client gets. The SOW is the part of the contract that lists exactly what will be delivered. Most disputes come from a vague SOW.

Typical payment schedules

Take the final payment before you launch or hand over the code, not after. Once the site is live, the client has little reason to hurry.

Chapter 08

Contracts & legal

This is general information, not legal advice. Laws differ by country and state. Have a local lawyer review your contract template once; it is a small, one-time cost.

Clauses every development contract needs

Accounts and ownership

The client should own the accounts for their domain, hosting, app store listings (Apple Developer Program: $99/year; Google Play Console: $25 once), payment processor and analytics, and invite you as a collaborator. Keeping client assets in your personal accounts creates a mess when the relationship ends.

Business setup checklist

• Register a business entity suited to your country (sole proprietorship, LLC, Ltd, or local equivalent).
• Open a separate business bank account.
• Get professional indemnity (errors & omissions) insurance, especially for app and e-commerce work.
• Register for sales tax / VAT / GST if your revenue or client locations require it.
• Prepare privacy policy and data processing templates if you handle personal data (GDPR, CCPA and similar laws).

Chapter 09

Delivery process

A standard project lifecycle. Each phase ends with a client approval, which also works as a natural invoice point.

1. KickoffGoals, roles, communication rhythm, accessWeek 1
2. Discovery & requirementsUser stories, sitemap or user flows, tech plan1–2 wks
3. UX wireframesLow-fidelity layouts for key screens1–2 wks
4. UI designHigh-fidelity Figma designs, design system, prototype2–3 wks
5. Development sprintsWorking software on a staging URL every 1–2 weeks4–12 wks
6. QA & UATCross-device testing, bug fixes, client acceptance testing1–2 wks
7. LaunchDeploy, DNS, app store submission, monitoring1 wk
8. Handoff & warrantyDocs, training, credentials, 30-day bug-fix window30 days
9. RetainerMaintenance, improvements, growth workOngoing

Communication rhythm

• Weekly update every Friday: done, next, blockers, decisions needed. A 2-minute Loom video works well.
• A staging link the client can always open to see progress.
• One channel for decisions (email or a shared Slack channel), so nothing gets lost in text messages.
• A change log of every request, whether it is in or out of scope, and its approval.

Launch checklist

Chapter 10

Tech stack

Choose a small, stable stack and get very good at it. Clients benefit from your speed, and your estimates become reliable. These are common, well-supported choices as of 2026.

A good default stack for a new agency

For marketing sites: Astro or Next.js + a headless CMS + Vercel or Netlify. For web apps: Next.js + TypeScript + PostgreSQL (via Supabase) + Stripe. For mobile: React Native with Expo, which shares TypeScript skills with your web work.

Web and app development is one part of software engineering. For the wider field (infrastructure, data, distributed systems, operating systems, embedded and more) see Beyond Web & Apps.

Chapter 11

Tools of the trade

Start with the free tiers. Add a paid tool only when a specific problem costs you more time than the tool costs money.

Chapter 12

Money & cash flow

Agencies rarely fail from lack of work. They fail from cash-flow gaps: a big project finishes, the next one hasn't started, and invoices are 45 days late.

Invoice essentials

Invoice number, issue and due dates, your business and tax details, the client's legal name, line items that match the SOW, tax lines, total, payment methods and the late-payment terms. For international clients, state the currency and who pays transfer fees.

Chapter 13

Scaling up

Scaling means the business can take on more work without the founder doing all of it. Grow in this order:

1. Document everything

   Write SOPs (standard operating procedures) for sales, onboarding, delivery and handoff. Use templates for proposals, SOWs, contracts, kickoff decks and QA checklists.

2. Add subcontractors

   Start with trusted freelancers for design, QA or extra dev capacity. Pay them 50–65% of what you bill to keep a healthy margin.

3. Hire a project manager

   Usually the first hire that frees the founder for sales. A PM can handle 3–6 active projects.

4. Grow recurring revenue

   Offer a care plan on every launch. Retainers make hiring safe.

5. Hire core roles

   Senior developer, designer, then account manager. Hire when you're consistently turning down work, not before.

Aim for a 40–60% gross margin on projects (revenue minus direct labor cost), leaving room for overhead and a 15–25% net profit.

Chapter 14

Metrics

Track a handful of numbers monthly. They tell you early when something is going wrong.

Chapter 15

Common pitfalls

Appendix A

Glossary

Acceptance criteria

Conditions a deliverable must meet for the client to approve it.

BANT

Budget, Authority, Need, Timeline. A checklist for qualifying leads.

Care plan

A monthly maintenance package: updates, backups, monitoring and small fixes.

Change request

A written, priced request for work outside the agreed scope.

CMS

Content management system. Lets clients edit content without a developer.

Core Web Vitals

Google's page experience metrics: loading (LCP), responsiveness (INP) and visual stability (CLS).

Day rate

A price for one working day, often used for sprints and consulting.

Deposit

An upfront payment that books the project into your schedule.

DSO

Days sales outstanding. The average number of days clients take to pay.

Headless

A CMS or store backend that serves content through an API to a separate frontend.

Kill fee

A fee the client pays if they cancel the project partway through.

MSA

Master services agreement. The main contract; each project adds a SOW under it.

MVP

Minimum viable product. The smallest version that tests the core idea with real users.

Net 14

Payment is due 14 days after the invoice date.

Productized service

A fixed-scope, fixed-price package sold the same way each time.

Retainer

A recurring monthly fee for a set amount of work or availability.

Scope creep

Gradual, unpaid growth of project requirements beyond the SOW.

SOP

Standard operating procedure. A written, repeatable way of doing a task.

SOW

Statement of work. Defines deliverables, timeline, price and terms for one project.

Staging

A private copy of the site or app where changes are reviewed before going live.

UAT

User acceptance testing. The client tests the product before sign-off.

Utilization

The share of available working hours that are billable.

Value-based pricing

Pricing based on the value of the outcome to the client rather than your time.

White label

Work you build that another agency sells under its own brand.

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