Business case & P&L
Turn assumptions into a monthly P&L, a breakeven month and a funding ask. The mailing numbers link straight to the property intelligence channel.
The raise
£40,000
Cash trough -£28,360 in month 3, plus 25% buffer
Monthly breakeven
Month 4
First month EBITDA turns positive
Year 1
£374,000
110 installs · EBITDA £89,800
Year 2
£5,361,800
1577 installs · EBITDA £1,918,460 · 22 crews by the end
Demand
Per install
Getting customers (mailing)
Overheads / month
One-offs
Setup covers the van, tools, initial stock and brand, hitting month 1.
One install, unit economics
Revenue£3,400
Kit-£1,250
Labour-£450
Courier-£60
Other-£90
Gross profit£1,550 (46%)
CAC (letters)-£170
Contribution£1,380
Cash in the bank, month by month
The deepest point is the money you need to have raised before you start.
| Month | Installs | Letters | Revenue | Gross profit | Marketing | Opex | EBITDA | Cash |
|---|---|---|---|---|---|---|---|---|
| M1 | 2 | 400 | £6,800 | £3,100 | £340 | £4,800 | -£2,040 | -£27,040 |
| M2 | 3 | 600 | £10,200 | £4,650 | £510 | £4,800 | -£660 | -£27,700 |
| M3 | 3 | 600 | £10,200 | £4,650 | £510 | £4,800 | -£660 | -£28,360 |
| M4breakeven | 4 | 800 | £13,600 | £6,200 | £680 | £4,800 | £720 | -£27,640 |
| M5 | 5 | 1,000 | £17,000 | £7,750 | £850 | £4,800 | £2,100 | -£25,540 |
| M6 | 6 | 1,200 | £20,400 | £9,300 | £1,020 | £4,800 | £3,480 | -£22,060 |
| M7 | 8 | 1,600 | £27,200 | £12,400 | £1,360 | £4,800 | £6,240 | -£15,820 |
| M8 | 10 | 2,000 | £34,000 | £15,500 | £1,700 | £4,800 | £9,000 | -£6,820 |
| M9 | 12 | 2,400 | £40,800 | £18,600 | £2,040 | £4,800 | £11,760 | £4,940 |
| M10 | 15 | 3,000 | £51,000 | £23,250 | £2,550 | £4,800 | £15,900 | £20,840 |
| M11 | 19 | 3,800 | £64,600 | £29,450 | £3,230 | £7,000 | £19,220 | £40,060 |
| M12 | 23 | 4,600 | £78,200 | £35,650 | £3,910 | £7,000 | £24,740 | £64,800 |
| M13 | 29 | 5,800 | £98,600 | £44,950 | £4,930 | £7,000 | £33,020 | £97,820 |
| M14 | 36 | 7,200 | £122,400 | £55,800 | £6,120 | £9,200 | £40,480 | £138,300 |
| M15 | 45 | 9,000 | £153,000 | £69,750 | £7,650 | £9,200 | £52,900 | £191,200 |
| M16 | 57 | 11,400 | £193,800 | £88,350 | £9,690 | £11,400 | £67,260 | £258,460 |
| M17 | 71 | 14,200 | £241,400 | £110,050 | £12,070 | £13,600 | £84,380 | £342,840 |
| M18 | 89 | 17,800 | £302,600 | £137,950 | £15,130 | £15,800 | £107,020 | £449,860 |
| M19 | 111 | 22,200 | £377,400 | £172,050 | £18,870 | £18,000 | £135,180 | £585,040 |
| M20 | 139 | 27,800 | £472,600 | £215,450 | £23,630 | £22,400 | £169,420 | £754,460 |
| M21 | 173 | 34,600 | £588,200 | £268,150 | £29,410 | £26,800 | £211,940 | £966,400 |
| M22 | 217 | 43,400 | £737,800 | £336,350 | £36,890 | £33,400 | £266,060 | £1,232,460 |
| M23 | 271 | 54,200 | £921,400 | £420,050 | £46,070 | £40,000 | £333,980 | £1,566,440 |
| M24 | 339 | 67,800 | £1,152,600 | £525,450 | £57,630 | £51,000 | £416,820 | £1,983,260 |
The ask, in one paragraph
Raising £40,000 covers £25,000 of setup (van, tools, stock, brand) and carries the plan through its cash trough of £28,360 in month 3, with a 25% buffer. The business turns monthly-profitable in month 4, reaching 1577 installs and £5,361,800 revenue in year two at a 46% gross margin, run by 22 crews. Acquisition stays direct: 337,400 addressed letters over the plan at £170 per won install, driven by the property intelligence engine.
The seed case
Everything below recomputes from the plan above: change an assumption up there and the market share, ratios and milestone dates move down here.
How big is this? (bottom-up)
TAM · UK suitable homes
£20.4bn
6.0m homes × £3,400
SAM · South London
£1.5bn
450k suitable homes
SOM · this 24-month plan
£5.7m
1,687 installs · 6% of the SW16/17 beachhead
Sized from suitable owner-occupied houses, not raw addresses. The credibility check is the beachhead share: staying in single digits keeps the plan defensible.
LTV : CAC
11.9:1 (first install alone repays CAC 10.7×)
Install contribution£1,550
Service plan (35% attach, 5 yrs)+£176
Blended LTV£1,726
CAC after 15% referrals£145
Context for the meeting: most home-services businesses live near 3:1. A one-off purchase with strong contribution and a service attach is what makes this ratio unusual, and it is the best slide in the deck.
The round
Raise£40,000
Pre-money£900,000
Post-money£940,000
Two ways to tell this story: keep the plan's modest ask as a friends-and-family round, or crank the ambition dials above (marketing-led growth, earlier second crew, higher founder cover) and let the model price an institutional seed.
What actually moves the ask
Each driver swung to its downside and upside; bars show the change in cash needed. Sage shrinks the raise, terracotta grows it. This is the "we know our risks" slide, and it tells you which number to go validate first.
Mail response rate
-£566 to +£2krange 1.0% → 3.0%
Monthly growth
-£825 to +£3krange 15% → 35%
Order value
-£3k to +£4krange £3060 → £3740
Kit cost
-£2k to +£2krange £1438 → £1063
Founder draw
-£4k to +£7krange £4500 → £1500
Validate these before you show anyone
The case is only as strong as its weakest placeholder. Each of these firms up in under two weeks.
Kit cost per install (currently £1,250)
The biggest COGS line; every £100 here moves gross margin ~3 points.
How: Two written supplier quotes for the standard multi-split BOM (see Procurement), at one-off and at 10-unit volume.
Mail response rate (currently 2%)
The top driver of the ask in the sensitivity analysis; CAC scales inversely with it.
How: One 5,000-letter test into hot-band SW16/17 homes with per-address pages; measure completed quotes, not clicks.
Labour per install (currently £450)
Sets the crew model and the second-crew economics.
How: Day-rate quotes from two F-Gas subcontractors against the template install spec.
Pre-money valuation (currently £900,000)
Pure placeholder; it prices the dilution, not the business.
How: Comparable UK pre-seed/seed rounds for tech-enabled trades; let the round page negotiate from there.
Service plan attach (currently 35% at £12/month)
Carries the recurring-revenue story and most of the LTV upside.
How: Offer it to the first ten install customers at handover and count signatures.
The road to Series A
Months come from the plan, not from hope: crank growth above and watch the dates pull in. Each milestone retires a risk, which is what a seed round is priced on.
- Month 1
Platform live in the beachhead
proves the productQuote funnel, project timeline, property intelligence and the console running in SW16/SW17. First 5,000-letter mailing out with per-address pages.
Gate: 5,000 letters · funnel conversion measured
- Month 1
First revenue install
proves the productA stranger (not a friendly) goes quote → site visit → install on the standard price and template.
Gate: 1 install · 1-day fit · reference customer
- Month 4
Template model proven
proves the marketTen installs across at least three archetypes with no bespoke design work. Install actuals feeding back into templates and pricing.
Gate: 10 installs · ≥3 archetypes · actuals captured
- Month 4
Monthly breakeven
proves the economicsEBITDA turns positive. The raise stops funding losses and starts funding growth: every pound after this buys expansion, not survival.
Gate: EBITDA ≥ £0 · gross margin ≥ 45%
- Month 7
Repeatable acquisition
proves the economicsMailing CAC holds at ~£145 across multiple campaigns; referrals appearing. LTV:CAC 11.9:1 with the service plan attached.
Gate: CAC ≤ £189 · LTV:CAC ≥ 3
- Month 11
Second crew, founder off the tools
proves executionDemand passes one crew's capacity. The playbooks and installer app spec have to work without the founder on site: the first real test of the operating system.
Gate: >16 installs/month · crew 2 at ≥80% utilisation
- Month 13
£1m revenue run-rate
proves scaleMonthly revenue passes £83k. Expansion postcodes live across South London, property book past 100k homes.
Gate: £83k+/month · 3+ outcodes active
- Month 13
Series A window opens
proves scaleProfitable, growing, with proprietary data compounding. Raise A to industrialise: warehouse, crews 3-5, national playbook. Or don't, and keep compounding.
Gate: £1m+ run-rate · LTV:CAC ≥ 3 · breakeven behind you
The investor memo
Auto-written from the live model, so it can never disagree with the numbers above. Copy it into an email or data room, or print this page as the one-pager.
# Dang, It's Hot: seed memo ## The ask Raising £40k at £900k pre-money (4.3% to investors, 10% pool, founder keeps 85.7%). The raise covers £25k of setup and the cash trough of £28k in month 3, with a 25% buffer. ## The business Fixed-price residential air conditioning, sold in under two minutes online and installed from pre-engineered templates. A proprietary property database (EPC + planning + our own audits) means we know the house before the customer finishes typing their postcode: quotes prefill, mailings carry per-address landing pages, and design is selection rather than survey. ## Market (bottom-up) TAM £20.4bn (6.0m suitable UK homes × £3,400). SAM £1.5bn across South London. This plan captures 1,687 installs (£5.7m), just 6% of the SW16/SW17 beachhead: the numbers work without heroic share. ## Unit economics £3,400 order value, 46% gross margin (£1,550 per install). CAC £145 via addressed mail after 15% referrals; the first install repays it 10.7x on its own. Blended LTV £1,726 with the service plan gives LTV:CAC of 11.9:1. ## The plan 110 installs and £374k revenue in year one; 1577 and £5.4m in year two, run by 22 crews. Monthly breakeven in month 4. ## Milestones (months from the model, not from hope) - Month 1: Platform live in the beachhead. Gate: 5,000 letters · funnel conversion measured - Month 1: First revenue install. Gate: 1 install · 1-day fit · reference customer - Month 4: Template model proven. Gate: 10 installs · ≥3 archetypes · actuals captured - Month 4: Monthly breakeven. Gate: EBITDA ≥ £0 · gross margin ≥ 45% - Month 7: Repeatable acquisition. Gate: CAC ≤ £189 · LTV:CAC ≥ 3 - Month 11: Second crew, founder off the tools. Gate: >16 installs/month · crew 2 at ≥80% utilisation - Month 13: £1m revenue run-rate. Gate: £83k+/month · 3+ outcodes active - Month 13: Series A window opens. Gate: £1m+ run-rate · LTV:CAC ≥ 3 · breakeven behind you ## Biggest sensitivity Founder draw (£4500 to £1500) moves the cash requirement by £6,600 to -£3,525. It is first on the validation list. ## Why this wins Every install feeds actuals back into templates, pricing and the property database. The data asset compounds; a competitor starting later starts from zero.