There is a specific number that keeps most home service pros awake at night: the amount they underquoted a job by. Every HSP has a story about the boiler swap that took three days instead of one, or the roof repair that ran into rotten timber, or the "quick" bathroom that turned into a full replumb. The frustrating part is that these overruns are rarely bad luck. They are almost always the result of a quoting process that was too vague to price the risk properly.
Most home service pros underprice their work by 15–30%. Not because they don't know what things cost, but because their quoting process forces them to guess.
Why lump-sum quotes cost you money
The traditional quote — "Full bathroom refit: £6,400" — feels professional. It's clean, it's easy for the customer to say yes to, and it makes you look confident. It is also the single biggest reason home service pros lose margin.
A lump sum hides your assumptions. When the customer changes their mind about the tiles, or the joist is rotten, or they want a different tap, you have no reference point to charge extra without looking like you're squeezing them. Everything becomes a negotiation, and negotiations at week three of a job favour the customer.
Line-item quoting flips this. Instead of one number, you break the job into 10–20 discrete items — labour, each fitting, each fixture, disposal, protection, aftercare. Now when the customer wants a different tap, you swap one line. When the joist is rotten, you add a line. The price moves, but it moves transparently, and nobody feels ambushed.
The five-part quote structure that wins
Top-quoting HSPs follow a consistent shape.
1. Scope of works. A three-to-five sentence description of what you're doing, written for the customer, not for you. "Remove existing bath, supply and fit new steel bath, retile splashback, replace mixer tap, dispose of old fixtures, leave site clean." If they can't read this and picture the finished job, rewrite it.
2. Line items. Ten to twenty rows. Each row has a description, a quantity, a unit price, and a total. This isn't about showing your margin — it's about showing your thinking. Customers who see the breakdown are 40% more likely to accept the total.
3. What's included. A short bullet list. Waste removal. Protection of adjacent areas. Testing. Aftercare. Warranty period. This kills 80% of the "I thought that was included" arguments before they happen.
4. What's not included. Just as important. Making good to painted walls. Structural work beyond the scope. Replacement of unforeseen damaged pipework. Discovery of asbestos. Being explicit here isn't defensive — it's professional. Customers respect it.
5. Terms. Payment schedule (deposit, milestone, completion), acceptance window, variation policy. One paragraph.
The three prices you need to know
Before you can quote anything without leaving money on the table, you need to know three prices for every job type you do.
Your cost price is what the job actually costs you — materials at trade, labour at true fully-loaded hourly cost including holiday and van, and a realistic time estimate that includes travel and cleanup.
Your floor price is the minimum you'll accept — cost price plus your minimum acceptable margin (usually 20% for a home service business, 30% for specialists).
Your target price is what you actually quote — cost price plus your target margin (35–45% for most trades).
Quote at target. Negotiate to floor. Never go below floor. Sounds obvious, but 90% of pros don't know these numbers for their own most common jobs.
Variations: the hidden margin
Almost every home service job has variations. The customer changes their mind, the site throws up a surprise, or scope creeps. If you don't have a variation process, you eat those changes at your cost.
A proper variation process looks like this: as soon as a change is requested or a surprise is found, stop work, price the variation on the spot, get written approval (a photo of a signed line or an in-app confirmation), and only then continue.
Well-run home service businesses do 15–25% of their revenue in variations. Badly-run ones do them for free and wonder why they made no profit at the end.
The confidence gap
Underpricing is rarely an arithmetic problem. It's a confidence problem. Home service pros are afraid that if they charge what the work is really worth, they'll lose the job. In reality, the pros who consistently charge more win the same number of jobs — sometimes more — because their quotes look considered, their scopes are clear, and their price signals quality.
A cheap quote is a suspicious quote. If you quote £3,000 for a job everyone else is quoting £5,000, the customer will assume you've missed something. Sometimes you have.
What to do this week
Pick your three most common job types. Build a line-item template for each with your real numbers. Include the "what's included / not included" sections. Test them on your next five quotes.
You'll notice two things almost immediately. First, quotes go out faster because you're not writing from scratch. Second, your conversion rate stays the same or goes up, even though your prices are 10–15% higher.
That's the margin you've been leaving on the table.
Absolutely gives you templated line-item quoting with built-in variation tracking, so the whole framework in this article lives in your workflow instead of your head. Free for a limited time.
