Best Quoting App for Loft Conversion Specialists in the UK 2026: Top 5 Compared
Loft conversion work is some of the most complex and high-value residential construction in the UK. A single dormer loft quote can run to £40,000 or more once you factor in structural steel, dormer framing, roofing, insulation, electrics, plumbing, and a new staircase — and that is before planning fees or building regulations sign-off. Getting the quote right first time is the difference between a profitable job and one that bleeds money through under-priced variations. Yet most generic quoting apps treat a loft conversion the same as a boiler swap or a garden fence, with no concept of stage payments, structural calculations, or the long lead-in times that define this trade.
UK-specific considerations make the problem sharper still. Velux loft conversions, hip-to-gable works, and full dormer extensions each carry different planning permission costs and building regs loft requirements. A Velux loft conversion typically falls under permitted development and requires only a building regulations application, while a large rear dormer in an Article 4 direction area may need full planning and a structural engineer's sign-off before a single timber is cut. Your quoting software needs to be flexible enough to build multi-stage quotes that reflect those realities — and to convert them into professional PDFs that homeowners and architects will take seriously.
This guide cuts through the noise and compares the five quoting apps most commonly used by UK loft conversion specialists in 2026. We cover pricing, trade-specific features, UK compliance (VAT and CIS), and real-world pros and cons — so you can pick the right tool for your business without wasting a month trialling software that was built for an HVAC company in Atlanta.
What Loft Conversion Specialists Need in Quoting App Software
- Dormer loft quote line items: You need to build quotes that break out dormer framing, fascia, soffits, lead flashing, roofing felt, battens, tiles, and structural steel as individual priced lines — not a single lump-sum entry. Good software lets you save these as reusable templates so you are not rebuilding a dormer loft quote from scratch every time.
- Velux loft conversion packages: Velux-only conversions have a different cost profile from a full dormer — typically lower, with savings on planning and structural work. Your app should support multiple quote templates so you can quickly switch between a Velux loft conversion package and a full dormer without copy-pasting rows manually.
- Planning permission costs and building regs loft fees: Many homeowners are surprised when planning fees and building regulations application costs appear on the quote. Good quoting software lets you add these as named line items — with optional notes explaining what they cover — so there are no disputes at invoice stage.
- Stage payments loft schedule: A loft conversion rarely gets paid in one go. The industry standard is a deposit on contract exchange, a payment at first fix (structural frame and roof closed), a payment at second fix (electrics and plumbing), and a final retention on sign-off. Your quoting app must generate stage payment schedules tied to each milestone, ideally converting directly into staged invoices.
- Structural calculations and engineer allowances: Structural calculations are a cost that varies by job complexity. Whether you pass this straight through as a disbursement or mark it up, your quoting software needs to handle it as a line item with optional notes — and your quote must be editable on-site when the structural engineer comes back with revised steel sizes that change your labour estimate.
- Loft staircase quote accuracy: Staircases for loft conversions are custom-built items with significant lead times and variable cost. A bespoke hardwood staircase is three times the price of a standard softwood flight. Your app should allow you to swap staircase options in and out of a quote and recalculate totals instantly, so you can show the homeowner the price difference between options during a site visit.
- UK VAT and CIS compliance: Loft conversion work on residential properties is standard-rated for VAT, but new-build loft additions and some conversion-to-dwelling work can be zero-rated. CIS deductions apply when you sub-contract groundworkers or structural steel erectors. Your quoting software must handle these tax scenarios correctly so that your quotes and invoices are legally compliant.
Top 5 Quoting Apps for Loft Conversion Specialists
| App | Free Plan | Paid From | Best For | UK Support |
|---|---|---|---|---|
| Sleepless Tradesman | Yes (no time limit) | £0 free tier | Sole traders & small teams | Built for UK |
| Tradify | 14-day trial | £29/user/month | Teams needing job management | Strong UK focus |
| ServiceM8 | Free up to 20 jobs | £9/month | Field dispatch & scheduling | Partial (AU-origin) |
| Jobber | 14-day trial | £49/month | Client communication | Limited (US-origin) |
| QuickBooks | 30-day trial | £14/month | Accounting & MTD VAT | MTD & CIS ready |
1. Sleepless Tradesman — Best Free Option for UK Loft Conversion Specialists
Sleepless Tradesman was built specifically for UK tradespeople, and it shows. The free tier has no monthly fee and no expiry date — you can send quotes, convert them to invoices, and track jobs without paying a penny. For a sole-trader loft conversion specialist doing three to five jobs a month, that alone is compelling. The AI-powered quoting tool is particularly useful: describe the job in plain English (e.g. "rear dormer loft conversion, 4-bed semi, includes structural steel, Velux in hip, new staircase, full boarding and plastering") and it generates a structured quote with line items you can edit, rather than a blank canvas you have to fill from scratch.
UK VAT and CIS are handled natively. You can set the correct VAT rate per line item (useful when you have zero-rated new-build work alongside standard-rated renovation lines), and CIS deductions appear automatically on sub-contractor invoices. Stage payment schedules are supported — create a quote, then split it into milestone-based invoices without re-entering data.
Pros for loft conversion specialists: No monthly cost on the free tier; AI line-item generation saves time on complex dormer loft quotes; UK VAT/CIS built in; stage payment invoicing; mobile-friendly for on-site edits. Cons: Smaller ecosystem than Tradify or Jobber; fewer third-party integrations; best suited to smaller teams rather than large multi-crew operations.
2. Tradify — Best Paid Option for UK Tradespeople
Tradify is a New Zealand-born platform with a strong UK following and a genuinely UK-aware product. At £29 per user per month it is not cheap for a sole trader, but for a loft conversion business running two or three crews with a back-office coordinator, the job management features justify the cost. You get a full job lifecycle from quote to invoice, a Gantt-style schedule view, purchase order management for materials, and time tracking per job — all of which matter on a loft conversion that runs eight to twelve weeks.
Tradify integrates with Xero and QuickBooks for accounting, handles UK VAT correctly, and has a reasonably good mobile app for iOS and Android. The quote builder is solid — you can save line-item templates for recurring work types like Velux loft conversion packages or standard dormer loft quote structures, which speeds up estimating significantly.
Pros for loft conversion specialists: Full job management from quote to completion; good scheduling for multi-week projects; purchase orders for material ordering; UK VAT and Xero/QuickBooks integration; template library for repeat quote structures. Cons: £29/user/month adds up quickly for larger teams; CIS support is less mature than dedicated UK tools; the mobile app can be slow on older Android devices.
3. ServiceM8 — Best for Field Service Dispatch
ServiceM8 originated in Australia and its DNA shows in features built around high-volume field service dispatch — think HVAC maintenance rounds, plumbing callouts, and electrical testing schedules. For a loft conversion specialist it offers a capable quoting module, GPS-tracked job dispatch, and a clean iOS app that works well on an iPhone at a customer's property. The free plan covering up to 20 jobs per month is generous for a small operation testing the software.
Where ServiceM8 is less well-suited to loft conversion work is the absence of a native stage payment workflow and the relatively shallow support for the kind of multi-week, multi-phase job management that a dormer conversion demands. UK VAT is supported, but CIS functionality is limited and typically requires a workaround via Xero integration. The platform is iOS-first; Android support exists but is less polished.
Pros for loft conversion specialists: Excellent dispatch and scheduling for teams with multiple vans; strong iOS app for on-site quoting; low entry price; good client communication tools. Cons: Australian-origin means UK CIS support is an afterthought; no native stage payment schedule; less suited to long-duration loft conversion projects; Android experience is weaker than iOS.
4. Jobber — Best for Client Communication
Jobber is a Canadian-built platform that has found a UK audience among residential service businesses that deal with high volumes of customer interaction. Its client portal is genuinely excellent — homeowners can view their quote, approve it online, track job progress, and pay their invoice without needing to call you. For a loft conversion specialist who works on high-value residential projects where the client experience matters, this is a real differentiator.
The quoting and invoicing tools are polished and the automated follow-up sequences (e.g. a reminder email three days after sending a quote with no response) are a genuine time-saver for a busy loft conversion business. The downside is cost — the Core plan starts at £49/month for a single user, and the features that make Jobber compelling (two-way SMS, automated follow-ups, online booking) are on higher tiers. UK VAT is supported; CIS is not natively handled and requires accounting software integration.
Pros for loft conversion specialists: Best-in-class client portal and online quote approval; automated follow-up sequences reduce quote chasing; polished professional presentation; good mobile apps. Cons: Expensive — £49/month+ for features that competitors include in cheaper tiers; US/Canada-origin means CIS is not supported; less suited to the detailed line-item complexity of a full loft conversion quote.
5. QuickBooks — Best for Accounting Integration
QuickBooks is not a field service app — it is an accounting platform with a quoting module bolted on. That matters because its strengths are precisely where other apps are weakest: Making Tax Digital VAT filing, CIS contractor and subcontractor handling, payroll, and P&L reporting. For a loft conversion business that is VAT-registered, runs CIS sub-contractors, and needs to file quarterly VAT returns under MTD, QuickBooks removes the need for a separate bookkeeping tool.
The quoting experience is functional but not trade-optimised. There are no saved templates for dormer loft quote structures, no AI line-item generation, and no stage payment workflow out of the box. You can build a quote and send it, but a loft conversion specialist who needs to produce a detailed 25-line quote with structural steel allowances, planning permission costs, building regs loft fees, and a loft staircase quote as separate items will find QuickBooks fiddly compared to trade-specific tools.
Pros for loft conversion specialists: Full MTD VAT filing; native CIS contractor and subcontractor support; payroll integration; connects to all major UK banks via open banking; mature and trusted platform. Cons: Not built for field quoting — no trade templates, no AI quoting, no stage payment schedule; mobile app is clunky for on-site use; best used alongside a dedicated quoting app rather than as a standalone solution.
Which App Is Right for Your Loft Conversion Specialists Business?
If you are a sole-trader loft conversion specialist doing most of the work yourself with occasional sub-contractors, Sleepless Tradesman on the free tier is the clearest starting point. You get AI-powered quoting that handles complex dormer loft quote structures without a monthly subscription, UK VAT and CIS compliance built in, and stage payment invoicing that suits the way loft conversion contracts are typically structured. The lack of a monthly cost means you can use it indefinitely without it eating into your margins on smaller jobs.
If you run a team of two to five operatives and need to coordinate schedules, purchase orders, and job progress across multiple active loft conversions simultaneously, Tradify at £29/user/month is the most balanced paid option. The job management features are genuinely useful for multi-week projects, and the UK VAT handling is solid. The cost is justified once your team is running more than three or four concurrent jobs.
If your business is already VAT-registered and you are dealing with the complexity of CIS sub-contractor deductions, MTD VAT returns, and quarterly tax filings, consider QuickBooks as your accounting backbone combined with Sleepless Tradesman or Tradify for the field quoting work. Running both costs less than Jobber alone and gives you best-in-class tools for each function.
If your loft conversion business has grown to the point where you are running multiple vans, coordinating a site manager with daily sub-contractor crews, and handling a high volume of customer enquiries, ServiceM8 or Jobber may suit you better than the competition. ServiceM8 wins on dispatch and scheduling; Jobber wins on client communication and quote approval. Both come with higher costs and weaker UK compliance support, so factor that in.
Frequently Asked Questions
What is the best quoting app for Loft Conversion Specialists in the UK?
Sleepless Tradesman is the top free option for Loft Conversion Specialists — no monthly subscription on the free tier, AI-powered quoting, and UK VAT/CIS support. For teams needing full job management, Tradify at £29/month is the best UK-focused paid option. ServiceM8 suits field-service-heavy workflows, while QuickBooks works best for Loft Conversion Specialists who need integrated accounting.
Is there a free quoting app for Loft Conversion Specialists?
Yes. Sleepless Tradesman offers a free tier with no monthly fee covering AI-powered quoting, invoice sending and job tracking — suitable for sole-trader Loft Conversion Specialists. Other platforms offer limited free trials but require a paid subscription for ongoing use.
What features should Loft Conversion Specialists look for in quoting app software?
Loft Conversion Specialists should look for software that handles dormer loft quote line items, Velux loft conversion packages, UK VAT and CIS compliance, stage payments loft schedules, and mobile-friendly job cards. Trade-specific line items for planning permission costs, building regs loft fees, structural calculations, and loft staircase quotes save significant time when estimating and prevent costly omissions.