Custom software for small businesses.
Built by AI. Priced like SaaS.
Agencies quote independent restaurants, shops and venues $38K–$171K and ~13 months for the software they need, so most never buy it. Vbild interviews the owner, writes the spec, and ships a working app they own in days, for $3,500–$25,000 plus $99–$499 a month. The margins of software, sold as a service.
Sell the work, not the tool.
Small businesses were never the customer. 36,200,000 US small businesses exist; custom software has only ever been built for the ones that could pay six figures and wait a year. Vertical SaaS filled part of the gap, but Toast, Square and Mindbody fit the average business, not yours.
AI collapsed the cost of building. What took an agency team months is now days with Claude in the loop and a senior engineer reviewing. a16z: “Customers that were previously too low ACV will suddenly have attractive economics.” That is this market.
DIY builders prove demand, not the solution. Lovable (~$600M / $13.3B) shows owners want their own software. But ~60% of vibe-coded projects never reach production: owners don't want to build, host and maintain. They want it done. Sequoia: “If you sell the tool, you're in a race against the model. But if you sell the work, every improvement in the model makes your service faster, cheaper, and harder to compete with.”
Our wedge is operators, not developers. The founder runs growth at a restaurant-kiosk company and sells into the same payments and POS ecosystem daily. Every build so far came from that network.
A bottoms-up market, not a top-down one.
Business counts from Census, SBA, Technomic and USDA × a blended $4,500 annual contract value (setup amortized over three years plus subscription). Every input is listed below.
| Segment | US businesses | Year | Source |
|---|---|---|---|
| Core verticals (SAM base) | |||
| Independent restaurants | 412,498 | 2025 | Technomic via Restaurant Business, independents down 2.3% in 2025 |
| Tobacco / vape shops (NAICS 459991) | 28,847 | 2022 | 2022 Economic Census, NAICS 459991 |
| Arcades, FECs, VR, bowling, escape rooms * | 25,000 | 2025 | Composite of Census CBP, IBISWorld, Room Escape Artist, USDA Census of Agriculture, The Knot |
| Event venues + agritourism farms/ranches * | 65,000 | 2024 | Composite of Census CBP, IBISWorld, Room Escape Artist, USDA Census of Agriculture, The Knot |
| Adjacent local-service verticals (TAM expansion) | |||
| Gyms / fitness clubs | 114,370 | 2025 | MMCG US fitness industry report 2025 |
| Auto repair shops | 176,403 | 2025 | BLS QCEW via Orbital, auto repair establishments |
| Dental practices | 147,280 | 2026 | Orbital dental TAM report 2026 |
* Composite counts combine several sources; no clean Census count exists for VR arcades or ranch event venues. Salons (1.06M, mostly booth renters) are excluded from the base TAM. SOM assumes 600 customers by year three, under 0.2% of SAM, roughly one quarter of what Toast adds in a single quarter.
Three categories, one way of building.
Places (counter), Pros (calendar), Venues (door). Pros adds the trades, landscapers, remodelers, real estate teams, cleaners and salons: a $4.0B base-case TAM on its own, taking Vbild's combined US TAM to $8.4B.
| # | Pros sub-vertical | US businesses | Employer firms | Willingness to pay $99–$499/mo |
|---|---|---|---|---|
| 1 | Plumbing/HVAC + electrical (238220, 238210) | 520,465 | 190,182 | High |
| 2 | Landscaping (561730) | 634,541 | 117,969 | High |
| 3 | Remodelers, roofing, painting (236118, 238160, 238320) | 198,149 | 198,149 | High |
| 4 | Real estate agents & brokerages (531210) | 987,897 | 163,894 | Medium-high |
| 5 | Janitorial & residential cleaning (561720) | 1,163,726 | 67,799 | Medium |
| 6 | Pest control (561710) | 33,197 | 16,565 | High |
| 7 | Hair & nail salons, barbers (812111–3) | 1,380,123 | 123,612 | Low-medium |
| 8 | Pet care + photographers (812910, 54192) | 401,784 | 38,592 | Low |
Census CBP (employer establishments) + NES (nonemployer firms), 2022–23, as republished by StartBusinessByState/NAHB/CPWR. Counts are solo-heavy; dollars are employer-heavy. Reachable: 600,000 / 900,000 / 1,300,000 businesses (conservative / base / aggressive) → $2.7B / $4.0B / $5.8B at $4,500 ACV. Employer establishments: 80/85/90% above $100K revenue × 50/65/80% already paying for software. Nonemployers: 5/8/12% above $100K × 40/50/60% paying. ACV $4,500.
Why lead with the trades
Plumbing, HVAC and electrical have the lowest solo share (62–66%) and the highest receipts; quoting, dispatch and invoicing justify a custom app. Beauty is 90% booth renters that Square, GlossGenius and Booksy already serve at $0–$50/mo, so it sits in the category, not at the front of it.
The gap incumbents leave open
Jobber and Housecall Pro gate automations, two-way SMS and client portals behind $149–$329/mo tiers; pros also pay $25–$75 per lead to Thumbtack and Angi for leads sold to 4–8 competitors. Realtors: 44% already spend ≥$250/mo on tech.
The Square playbook, applied
Square reached 4.5M+ sellers and $250B GPV by giving micro-merchants a near-free wedge (the reader), flat legible pricing, then vertical bundles. Solo is Vbild's reader: $0 setup, $29/mo, live in five minutes, and the $3,500–$25,000 custom build is the upsell. Square's own Oct 2025 plan simplification “nearly doubled” software attach.
Setup fee funds the build. Subscription compounds.
Unit economics
Blended ACV $4,350 at a 70/25/5 tier mix. Setup fees cover delivery cost on day one; subscription (hosting, support, agents) is the recurring base. Target gross margin 70%+ as AI share of delivery rises and the Lahore AI-developer cohort absorbs capacity. Target, not yet audited.
Willingness to pay is proven
Toast runs $2.4B / 180K ARR and locations. Owner.com passed $100M+ ARR selling independents a $249–$499/mo website. Vbild's $99–$499/mo sits inside the band small businesses already pay, with custom software instead of a template.
From done-for-you to self-serve
Every build adds to a shared primitive library (lists, calendars, payments, QR, waivers, age-gates, alerts). The Living Interface is the productized core; Bildr is the self-serve front door. Services today, platform margins tomorrow.
Done-for-you, custom, AI-speed, SaaS-priced.
$20–$50/mo, but the owner builds, debugs, hosts and maintains. ~60% of projects never ship. Great signal for demand; wrong buyer.
Custom, but priced for enterprises. 31% of projects finish on time, budget and scope (Standish).
Polished and rigid: one vertical, no custom workflows, $70–$2,000+/mo stacks. Proves the budget exists.
We interview, spec, build and run it. Owner gets software shaped to the business and owns the code. Distribution through the payments/POS channel the founder already works in.
Channels we already stand in.
- Payments & POS ecosystem. Founder is CGO at Innowi (restaurant kiosks); relationships with ISOs and processors (e.g. Elavon referral partners) reach thousands of merchants who already buy monthly software.
- Bildr self-serve intake. A 5-minute AI interview on vbild.ai produces a spec and prototype, then hands a qualified lead to sales. Zero-touch top of funnel.
- Programmatic-SEO restaurant sites. Low-ticket entry product (Starter tier) that converts to apps and agents.
- Lahore AI-developer cohort. Five function-specific AI developers on a 30/60/90 plan; delivery capacity that scales with demand at a fraction of US cost.
$500K–$1.0M pre-seed on a post-money SAFE
Market context: median post-money cap for $250K–$1M rounds was $10M in 2025; 49% of pre-seed dollars went to AI in H1 2026 (Carta). Terms discussed directly with the founder.
Proposed use of funds · 18–24 months
Milestones this round funds
- 100 paying businesses across 5 verticals
- $500K ARR run-rate with 70%+ gross margin
- Self-serve Bildr → prototype → paid build without a sales call
- Agent catalog sold as add-ons to every live app
Allocation and milestones are the founder's plan, not commitments. Market figures are cited to primary sources where available; see the deck for the full source list. Not an offer to sell securities.
Sources
- SBA Office of Advocacy, 2025 Small Business Profile
- Technomic via Restaurant Business, independents down 2.3% in 2025
- 2022 Economic Census, NAICS 459991
- Composite of Census CBP, IBISWorld, Room Escape Artist, USDA Census of Agriculture, The Knot
- MMCG US fitness industry report 2025
- BLS QCEW via Orbital, auto repair establishments
- Orbital dental TAM report 2026
- IBISWorld, hair salons in the US
- Intuit QuickBooks AI Impact Report 2026
- US Chamber, Empowering Small Business 2025
- Clutch app development cost study
- Standish Group CHAOS Report
- Toast Q2 2026 8-K
- Owner.com $100M ARR (founder post) / Restaurant Business
- TechCrunch, Lovable $13.3B valuation
- Fuzen, vibe coding examples 2026 (community survey)
- Carta, State of Pre-Seed 2025
- Carta, State of Pre-Seed Q2 2026
- Sequoia, Services: The New Software (Mar 2026)
- a16z, Good news: AI Will Eat Application Software (Mar 2026)
- Y Combinator, Requests for Startups
- Y Combinator, The YC Deal
- Google DORA 2025, State of AI-assisted Software Development
- METR, Feb 2026 uplift update
- Census NES + CBP 2023 via StartBusinessByState (service nonemployer share)
- Census NES + 2022 Economic Census via StartBusinessByState
- Census NES/CBP 2023, NAICS 531210 via StartBusinessByState
- NAHB Eye on Housing: most home builders are small businesses (2022 Econ Census)
- NPMA, US pest control industry 2025
- NAR 2025 Realtors Technology Survey
- Jobber Home Service Economic Report (Aug 2026)
- Jobber pricing (Sep 2026) / Housecall Pro pricing (Aug 2026)
- Thumbtack per-lead cost (third-party, 2026)
- Block FY2025 Form 10-K
- Block Q2 2026 shareholder letter
- Block Q4 2025 shareholder letter
- Square pricing (Oct 2026)
- GlossGenius pricing (2026)
- ServiceTitan FY2026 results
Data as of 2026-10-13.