Confidential Doc 4C-026 · Issued 04.2026
Rev. C BoxBuild // For 4C Construction Systems
4C Construction Systems × BoxBuild
The 4C Revenue Engine Pre-Build · Yours to test

We didn't write you a proposal.
We built you the engine.

A working preview of what 4C's revenue infrastructure could look like — already trained on what's publicly known, ready for you to test, break, and hand to Kevin and Denny. Imagine what we could do with the full picture from inside the business.

— From José Ferreira-Jorge 90 sec · Watch first
Project Brief // 4C-026
Issued to
Yonah Naftaly
Cc
Kevin · Denny · 4C Team
Company
4C Construction Systems
Prepared by
José Ferreira-Jorge
Firm
BoxBuild
Doc type
Proposal · Live Prototype
Decision
This week
04.2026 Pre-Build

Before we build anything, you need to know we heard you.

5 to 10 ICP-ish actual meetings per month would be golden.
— Yonah · 29:51

The KPI. Everything in this proposal is engineered to that number. We commit to a guaranteed floor by month 4. Section 07.

If we get in the room, we usually make sense. We just need to get in the room.
— Yonah · 27:27

The thesis. Your offering closes itself in the room. Our entire job is the part before the room — qualification, routing, booking, showing up first.

Track builders, developers — lots of homes per one customer. That's the real ICP.
— Yonah · 22:16

The buyer. Not wildfire homeowners — though they qualify. The engine is tuned for developer / track-builder / specifying-architect / GC volume.

A nicer saw and a forklift don't mean anything if there isn't people to move panels to.
— Yonah · 34:35

The urgency. 70 houses/month of factory throughput is sitting idle for lack of demand. Every week without flow is a week of fixed cost burning.

We believe the best way to evaluate revenue infrastructure is to use it. So we built you a preview of both agents using publicly available information about 4C — the SAFE and ECO systems, panel sizing, ICC-ES listings, the Gensler relationship, your Hayward factory throughput, and the four buyer archetypes you described in our call.

Hit them as a developer. Hit them as an architect. Hit them as a curious tire-kicker. Try to break them. Hand the phone number to Kevin and ask him to be hostile. This is what 4C's first line of revenue defense could look like at 2am on a Saturday — when a contractor in Altadena is finally researching panel systems.

// Important

These are demos, not production deployments. They've been built quickly with publicly available information about 4C — your website, LinkedIn, ICC-ES listings, public rebuild data. The accuracy and depth they show today is what we can do from outside the business. Imagine what's possible with the full technical picture from your team, your real product specs, your sales playbook, and conversations with Kevin and Denny.

Live · Web Chat Agent

Engine 01 — Web Agent

Embedded on a 4C-trained preview site. Knows SAFE vs ECO, panel sizing, ICC-ES listings, Gensler, the LA Fire Rebuild Program. Qualifies against your four ICPs in plain conversation. Books the meeting if they're a fit. Sends a structured lead summary if they're not.

4C Intake · Online
Hi — I'm 4C's intake assistant. SAFE panels, ECO panels, fire rebuilds, ADUs — what brings you in?
I'm a developer in Sacramento. Looking at a 48-unit infill site, want to evaluate panelized.
Got it — 48 units is right in our sweet spot. Quick question: are you locked into a design, or are you still in feasibility? (I ask because we install best when we're in the room early.)
Still feasibility. Schematic done.
Perfect timing. I'd like to put you in front of Yonah and the team — they'll walk you through SAFE for the multifamily envelope and run rough numbers against your schematic. 30 minutes, video call. Can I grab your email and a couple of times that work?
Type a message
Live · Voice Agent

Engine 02 — Voice Agent

Same training. Same qualification logic. Triggered from inside the chat for prospects who'd rather talk than type — the agent calls them, holds the conversation, books the meeting on your calendar, sends the lead summary to your team by email.

Triggered from chat
// Try it in the demo
Calls the prospect within seconds
Speaks naturally · Qualifies in < 90 seconds · Books on your team's calendar
// Test in the demo Open demo →
A 24/7 front line for inbound. Never sick. Never off-shift. Trained on 4C's product, calibrated to your ICP, qualifying every conversation against the four buyer types you care about — and booking the ones that fit. And in the proposal below: an outbound layer that finds your developers and track-builders before they search.

Your current site (4ccs.com) is a beautifully shot brand statement. The build we'd propose extends it with a layer engineered specifically for revenue — every page becomes part of a funnel, every visitor is routed by their archetype, every conversation feeds the agents above. This is a directional preview, built to start a conversation about what's possible.

Live preview · Directional build
4ccs.com
// Hayward, CA · ICC-ES Listed · Patent-Pending
Panels that drop into
conventional construction.
Light-gauge steel and wood-framed panels. Manufactured in California. Installed without heavy equipment by your existing crews.
// Developer
Multifamily / Tract
10+ unit projects, infill
// Architect
Specifying SAFE / ECO
BIM, spec language, listings
// Builder · GC
Scoping a panel system
Pricing, install training
// Owner
Rebuilding home
Insurance-funded, fire-rebuild

Two systems. One platform.

// ICC-ES Listed · ESL-1695
SAFE panel cutaway
// SAFE System
Steel · Fire-rated
Light-gauge steel framed assembly with rockwool insulation, 1-hour fire-rated, non-combustible. Engineered for WUI rebuilds.
1-hr fire Non-combustible Patent-pending
ECO panel cutaway
// ECO System
Wood · Thermal
Wood-framed assembly with mineral wool batt and ZIP System sheathing. Best-in-platform thermal performance for Type V residential.
Type V ZIP system Best thermal

Recent projects.

// Built. Standing. Photographed.
Borrego Springs project
Borrego Springs
// Anza-Borrego, CA
Koike project
Koike Residence
// California
A&M project
A&M Residence
// California
Miami project
Miami Multifamily
// Miami, FL
70/mo
Factory throughput
Houses per month
30%
Faster than
stick-built
~1 hr
Per panel
Manual install
ICC-ES
Listed assemblies
ESL-1695

Ready to scope a project?

30-minute video call with Yonah and the engineering team.

Book intro call
FIG. 03.1 — Directional · Not Final

Notice what the page does. Real photography of real product. Four routes for four buyers. Two systems on one platform with their actual cutaway diagrams. Project gallery as proof. Each visitor is routed in one click and the agent above takes over from there.

// 01Find

Get Found + Reach Out

Two channels working in parallel. Inbound catches who's already looking. Outbound finds who'd buy if they knew you existed.

  • SEO + Google Ads for "panelized multifamily California," "ADU panel system," "WUI rebuild"
  • Targeted outbound to 1,500–2,500 named California developers + builders
  • Three-tier personalization. Email + LinkedIn. Real signals, not templates.
// 02Capture

Capture

Once they land, the AI web agent qualifies them in conversation, not a form. Four-archetype routing. Inbound never gets dropped.

  • AI web agent on every page
  • AI voice agent on the inbound line
  • CRM with custom 4-pipeline model (Developer · Architect · Builder · Owner)
// 03Nurture

Automate

Most agencies drop a lead after one email. Construction buying cycles run 6+ months — we hold the prospect through the whole arc.

  • Six-month nurture sequences per archetype
  • Trigger-based re-engagement
  • Lead-quality scoring updated continuously
// 04Convert

Convert

The agent books on Yonah's, Kevin's, or Denny's calendar based on archetype. Click to conversation in under 90 seconds.

  • Auto-routed booking by archetype
  • Pre-meeting brief sent to your team
  • Post-meeting nurture if not yet a yes

You mentioned you're evaluating two paths. Both have integrity, and both work for the right kind of company. Below is how we see the choice — described honestly so you can decide what fits where 4C wants to go.

// Path A · Operator-led model

A fractional GTM operator runs your engine.

A senior person — typically with construction or industrial sales DNA — runs your GTM for a few hours a week. They set up your CRM, define your ICP, write your sequences, and either coach or staff a BDR seat. The relationship is human-led and human-paced. When the contract ends, the engagement ends.

Front line
Human BDRs · business hours · phone-led
Capacity
Bound by operator and BDR availability
Coverage
Roughly business hours, weekdays
What you keep
The CRM data and processes
End of contract
Engagement winds down
// Path B · Infrastructure model

You own a 24/7 revenue engine.

We build you a permanent revenue infrastructure — website, AI web agent, AI voice agent, CRM setup, sequences, integrations — all configured for 4C, all yours. Then we run and improve it on a monthly retainer you can stop after the first six months.

Front line
AI agents · 24/7 · web + voice
Capacity
Scales without headcount
Coverage
Always on. 3am Saturday counts.
What you keep
Site · agents · CRM · pipelines · sequences
End of contract
Engine keeps running. You own it.

The question isn't which path is better in the abstract — both have real merit. It's which fits 4C right now: the company you're building, the throughput you need to fill, and how you want your team's time spent.

You said it on the call: "scope, time, cost, outcome — all sit with the energy."

// 01 · Scope

What we build, what we run.

  • Website rebuild — the 4C revenue surface (above), full custom build, four-archetype routing, technical spec sheets, lead-capture-everywhere
  • AI web agent — production deployment, 4C-trained, ICP-qualifying, CRM-integrated
  • AI voice agent — production phone number, same training, calendar booking, call recording
  • CRM setup — 4-pipeline model (Developer / Architect / Builder / Owner). Works with HubSpot, or our own CRM if preferred — discussed and quoted separately
  • Targeted Outbound — AI-augmented, ICP-specific. 1,500–2,500 California developers, track builders, multifamily firms and design-build GCs sourced from Google Maps, CSLB license data, permit feeds. Three-tier segmentation (founders with online presence get full personalization; named decision-makers get pattern-matched messaging; admin contacts get intro-request framing). Multi-touch email + LinkedIn over 6 weeks per cohort. Dedicated sending domains protect 4ccs.com reputation. AI-flagged reply triage feeds the same CRM as the inbound system.
  • Inbound sequences — 6-month nurture per archetype, written and tested
  • Ongoing — SEO content, Google Ads, weekly outbound list refresh, agent retraining, monthly review
// 02 · Time

How fast you see flow.

  • Week 1 — Kickoff, deep technical interview with Yonah on SAFE/ECO, ICP definition, content audit
  • Weeks 2–4 — Site build, agents trained on production knowledge base, CRM configured, sequences drafted
  • Weeks 5–6 — QA, test conversations, soft-launch to a small audience, calibration
  • Week 7Full launch. Engine live. Agents inbound. Outbound sequences firing.
  • Months 2–4 — Ramp. Agent training updates weekly. Lead quality compounds.
  • Month 4 onwards — Target floor of 3+ ICP meetings/month, backed by our Conviction Commitment. Section 07.
Build duration: 6–7 weeks Agent demos: Today
// 03 · Cost

What you pay, when.

  • The Build — $36,000 one-time. Two payment options: full upfront with a 5% discount, or six equal monthly payments (work begins after the first payment and signature)
  • The Operate — $4,750/month. 6-month minimum, then month-to-month. Cancel anytime after. All-inclusive — outbound tooling, list-refresh costs, deliverability infrastructure, and reply-triage labour are absorbed into the retainer. No surprise pass-throughs.
  • Google Ads spend — recommended starting at $3,000/month, paid directly to Google. If your ad spend goes above $5,000/month, we add a 10% management fee on top of the retainer (deeper segmentation, A/B testing, creative iteration at higher volumes)
  • CRM platform cost — separate. We work with HubSpot if you're already on it, or we can set up our own CRM and quote that separately if preferred
  • Hosting & Maintenance — three packages available for the website, AI web agent, and AI voice agent. Discussed at the right time (Section 07)
  • What you keep, permanently — the website, the agents, the CRM setup, the sequences, the outbound list and infrastructure, the integrations
Build: $36K Operate: $4,750/mo
// 04 · Outcome

The number you'll be measured on.

  • Floor — 5 ICP-qualified meetings per month by month 4
  • Target — 8–12 ICP meetings per month by month 6 (your stated 5–10 goal, with outbound layered in)
  • Pipeline quality — every meeting comes with a structured qualification record (role, project type, size, timeline, location) so your team walks in already knowing the brief
  • Stretch — One signed track-builder or developer relationship inside Year 1 (the volume play you described)
  • The conviction commitment — if we miss the floor in any month past month 4, we add the equivalent month of operate work at no extra cost. Section 07.
Floor by month 4: 5 ICP / mo Target by month 6: 8–12 ICP / mo

We've structured this as two decisions instead of three tiers, because that maps better to how this work actually unfolds — one decision is about owning the infrastructure, the other is about who runs and improves it month over month.

Decision 1 — The Build. A one-time investment in revenue infrastructure 4C keeps. Decision 2 — The Operate. A monthly retainer to keep improving and operating it. Two yeses, easier to commit to one at a time.

// Decision 01 · The Build

The infrastructure 4C keeps.

A one-time, fixed-price project. Built in 6–7 weeks. Yours from day one.

$36K one-time
fixed scope
Upfront (–5%)
or 6 monthly payments

What's in the Build

  • 4C revenue website — full custom build, four-archetype routing, mobile/desktop, content for all routes
  • AI web agent — production deployment, 4C-trained, qualification logic, CRM-integrated
  • AI voice agent — production phone number, same training, booking + recording
  • CRM setup — 4-pipeline model, automations, dashboards, integrations (works with HubSpot, or our own CRM if preferred)
  • Targeted Outbound infrastructure — ICP target list (1,500–2,500 California developers, track builders, multifamily firms, design-build GCs), three-tier segmentation, AI-personalized email + LinkedIn sequences, dedicated sending domains, deliverability stack, reply-triage system into your CRM
  • Inbound sequences — written, tested, deployed for all four archetypes
  • Training + handover docs — your team owns operating the system
  • 30-day post-launch tuning — included, no extra charge
// Decision 02 · The Operate

The team that keeps the engine sharp.

A monthly retainer. 6-month minimum, then month-to-month. Cancel anytime after.

$4.75K per month
6-mo min · all-in
Cancel anytime
after month 6

What's in the Operate

  • AI agent retraining — weekly updates as 4C evolves; agents get sharper every month
  • SEO content — 4 pieces/month, ICP-targeted, ranking strategy
  • Google Ads management — campaigns, optimization, reporting (ad spend recommended at $3K+/month, paid directly to Google; 10% management fee added if monthly spend exceeds $5K)
  • Outbound operations — weekly list refresh, sequence iteration based on response data, deliverability hygiene, reply triage with hot leads routed to Yonah within hours. All tooling absorbed — Apollo, Clay, sending infrastructure, the lot. No surprise pass-throughs.
  • Lead pipeline management — quality scoring, routing, escalation across both inbound and outbound
  • Monthly performance review — what's working, what's next, with Yonah and team
  • Quarterly strategy session — engine evolution, ICP refinement, new channels
  • Conversion optimization — site, sequences, agent flows continually tuned
  • Direct line to BoxBuild team — Slack channel, real humans, real response times
// The Conviction Commitment

5 ICP meetings per month by month 4.
Or we add a free month of operate.

This isn't performance pricing — you keep your full retainer fee, no contingency. It's a conviction signal. If we miss the floor in any month past month 4, we add an additional month of operate work to your engagement at no extra cost — capped at three free months in any 12-month period. We're confident the engine will hit your floor; this is how we put skin in the game without making outcomes the entire basis of the relationship.

// Hosting & Maintenance · Optional

If you want us to
host and maintain it.

Everything we build is yours to keep — the website, the AI web agent, the AI voice agent, the CRM setup, all of it. If you'd prefer to host and maintain it yourselves (or with another team), that's completely fine. If you'd rather we keep running the infrastructure — uptime, updates, monitoring, security, agent runtime — we offer three packages depending on what level of coverage 4C wants.

Platform Infrastructure Care
Standard hosting, agent runtime up to a defined message/minute volume, business-hours monitoring
Growth Platform Care
Higher capacity ceilings, expanded monitoring, faster response SLAs, priority issue resolution
Performance Platform Care
Dedicated capacity, 24/7 monitoring, full SLA, custom integrations, premium voice quality
We'll walk you through what's in each package when the time is right and you can decide if any of them fits — or none, if you'd rather handle it yourselves.

In your category, a single rebuild project sits between $500K and $2M+ in contract value. The slider defaults to $750K — a realistic LA single-family insurance-funded rebuild — but drag it up or down to match your actual mix.

Drag the sliders. Consider what the cost of doing nothing looks like — the projects Cover, Samara, and Plant Prefab close this year because they showed up for the search and 4C didn't.

Thought experiment · Not a quote · The math is yours, the lever is ours.
Load Calculator // Rev. A
Year 1 additional revenue $9.0M
3-year compounded uplift $31.3M
Cost of standing still
Off-site construction is our native category. Not an industry vertical we discovered last year.

BoxBuild is a revenue infrastructure partner for established construction companies — modular, panelized, mass timber, restoration, GCs. We're not a generalist agency that picked up a ConTech client. We've been embedded in this industry, building revenue infrastructure for it, since the start.

Our category-specific work is the reason the LinkedIn post that brought you to us existed. The thinking that produced that post produces this engine.

// Named work in the off-site construction space
Dave Cooper LIVE Cutting Edge Homes Maui Modulars Modular Construction Consultants Overcast Innovations Herauf Modular
So, Yonah —

The factory's ready.
The product's certified.
The market's open.
All that's left is flow.

You said it yourself: a nicer saw and a forklift don't matter without people to move panels to. We've shown you what the engine could look like. The only decision left is whether 4C powers it on.

Either answer is fine. What's not fine is silence. Your factory is making 70 houses a month of throughput against $1.2M of contracted revenue. Every week without a decision is a week of fixed cost burning against silent panels. 4C deserves a clear answer either way — and so does the team.