Construction quotes: generate them automatically and get them signed online

In short

• Yes, you can generate your construction quotes automatically from a library of work items and get them signed online the same day: an eIDAS-compliant electronic signature has legal value recognised throughout the European Union.
• A quote written by hand takes 30 minutes to 1 hour; generated from standard work items, it takes 10 to 15 minutes, mandatory legal mentions included.
• A quote is mandatory above 150 € incl. tax for building works and repairs, with a fine of up to 3,000 € (15,000 € for a company).
• Electronic signature providers observe that most signed documents are signed within the first 24 to 48 hours: the automatic 48 h follow-up is the most profitable lever in the whole chain.
• On budget: document generation from 490 € excl. tax, electronic signature from 990 € excl. tax, as a one-off flat fee, with no per-user subscription.

The problem, concretely

In construction, the quote is not a formality: it is the document that triggers the project, and often a legal obligation. For building works, repairs and call-outs, it is mandatory from 150 € incl. tax, with precise mentions (itemised breakdown, labour, travel, ten-year liability insurance, validity period). Failing to provide it exposes you to an administrative fine of up to 3,000 € for a sole trader, 15,000 € for a company.

And yet, in most companies with fewer than 10 employees (the vast majority of the sector), the quote is still done in the evening, in Word or Excel, by reworking an old quote. The result: 30 minutes to 1 hour per quote, calculation or VAT errors, forgotten mentions, and above all a sending delay of 3 to 5 days when projects pile up. Then the PDF goes out by email, and you wait. No structured follow-up, no visibility: "did he get it? did he read it? did he sign it?". Meanwhile, the customer has received two other quotes.

The real cost is not the time spent, it is the revenue lying dormant: a quote sent a week after the visit is a quote that has gone cold, and a quote never followed up is often a quote lost.

The full chain: quote, signature, deposit, invoice

Here is the same day, before and after, step by step.

Before. Site visit, notes in a notebook or on the phone. In the evening or at the weekend: open an old Word quote, replace the lines, recalculate the totals, check (or not) the mentions. Send as a PDF 3 to 5 days after the visit. The customer prints, signs, scans, sends back: count several more days, sometimes two weeks. The deposit is requested by email, the transfer arrives when it arrives. The final invoice is re-keyed by hand, with the risk of a discrepancy between the signed quote and the invoice issued.

After. During or just after the visit, you build the quote by selecting work items from the library: each work item carries its label, its unit, its price and its VAT rate. The document is generated in the company's branding, with all mandatory mentions pre-filled. Sent the same day, via a signing link. The customer clicks, reads, signs from their phone: eIDAS-compliant signature, timestamped, with an archived evidence file. On signature, a deposit payment link goes out automatically (30 % is common practice in construction). At the end of the project, the invoice is generated from the same data as the quote: no double entry, no discrepancy.

Each link is useful on its own, but it is the full chain that changes cash flow: the delay between "visit" and "deposit collected" goes from two or three weeks to a few days.

The work-item library and the mandatory legal mentions

The heart of the system is the work-item library: your standard services (replacing a water heater, installing an electrical panel, creating a water point) described once and for all, with materials, labour and margins. Building a quote becomes an assembly job, not a writing job. It is also what eliminates errors: the unit price and the VAT rate (20 %, 10 % renovation, 5.5 % energy renovation) are defined in the work item, not retyped each time.

The mandatory mentions (identity and SIRET number, itemised breakdown of each service, labour price, travel costs, totals excl. and incl. tax, validity period, professional insurance and ten-year guarantee with the insurer's details) are in the template, not in the memory of whoever is writing. The official detail is on service-public (link in sources): that is the reference to follow, not the templates floating around on forums.

On signing, the European eIDAS regulation recognises three levels. For an ordinary works quote, the simple or advanced signature, with timestamping and evidence file, is more than enough; I detailed the levels and use cases in this article on the eIDAS signature. The point that changes everything day to day is not legal, it is commercial: the automatic follow-up. An unsigned quote is followed up at D+2 then D+7, without anyone thinking about it. Signature providers observe that most signatures happen within the first 24 to 48 hours after sending or following up: past that window, every reminder counts, and that is precisely what no one has time to do by hand.

Mini case study: Vasseur Plomberie, 8 employees, 50 quotes a month

A fictional but realistic case, assembled from situations I come across. Vasseur Plomberie, a plumbing and heating company with 8 employees near Lille, issues about 50 quotes a month for an average basket of 2,500 €. Before: the manager wrote the quotes in the evening, about 45 minutes each, i.e. more than 35 hours a month. Average sending delay: 4 days. Signed return: 8 to 10 days when the customer signed, and no systematic follow-up.

Setup: a library of around 120 work items built from his old quotes, a quote template compliant with his branding with all the mentions, an online signing flow with follow-ups at D+2 and D+7, and a 30 % deposit link sent on signature.

Six months later, the cautious assessment: 10 to 15 minutes per quote instead of 45, i.e. about twenty hours returned each month; quotes sent on the day of the visit in most cases; a signing delay down from over a week to 24-48 hours for decided customers; and a few projects won simply because the quote arrived before the competitors'. No magic: the same quote, sent sooner and followed up on time.

How much it costs (and what it brings back)

Three families of solutions on the market. SaaS construction quote-and-invoice software generally costs 20 to 100 € per month per user; they make sense if a standard model suits you, less so if you want your branding, your sequences and your integrated signature. Standalone signature platforms run around 10 to 40 € per month per user, sometimes with a cost per send. Custom development by an agency rarely starts below 10,000 to 30,000 €.

My positioning is in between: features already built, which I adapt to your business, as a flat fee. Document generation (your templates, your work-item library, your mentions) starts at 490 € excl. tax: I detailed what this price covers in this article on the cost of PDF generation. The electronic signature flow (sending, eIDAS signature, follow-ups, evidence file, tracking) starts at 990 € excl. tax. These are one-off flat fees, not per-user subscriptions, and the signature I deliver is the one running in production on BeForBuild.com, my B2B SaaS for construction: I am not starting from a blank page.

The return calculation is simple and deliberately cautious. Take 40 quotes a month and 30 minutes saved per quote: 20 hours a month. Valued at 40-50 € an hour, that is 800 to 1,000 € a month of productive time recovered. The two building blocks combined (about 3,500 € excl. tax) therefore pay for themselves in 3 to 5 months, even before counting the commercial effect: a single extra project signed thanks to a quote sent the same day covers, on its own, a good part of the investment.

Where to start

1. The free 30-minute audit. We look together at your current quotes, your monthly volume, your existing software if you have any, and where the time really goes. You leave with a diagnosis and a flat-fee quote within 48 h, whether we work together or not.

2. The quote first. We build the work-item library from your old quotes and the template compliant with your branding. It is the link with the most immediate return: from the very first week, quotes go out faster and cleaner. If your quoting software suits you, we connect to it instead of replacing it.

3. The signature, then the rest of the chain. We plug in the signing flow and the automatic follow-ups, then, once it is running smoothly, the deposit on signature and the invoice generated from the same data. One link at a time, each measurable.

Sources

• Service-Public Entreprendre: mandatory quote, activities concerned and mentions
• Regulation (EU) No 910/2014 (eIDAS) on EUR-Lex
• economie.gouv.fr: mandatory quote, how it works