GCSTACK · FOR EMERGING ADU BUILDERS By a licensed ADU GC · Est. 2026

The operating system for growing ADU builders.

Built by a licensed ADU GC running 40+ builds in SoCal — for emerging builders outside his market. One pilot stands up your back-office and runs your growth engine until it delivers a defined number of leads.

Pilot = 2% of your target Ads at cost · 0% markup You keep what we build
Pilot model · 12-mo projection LIVE
$0.0M Signed contracts
at target
$5M $2.5M $0 M0 M6 M12
$100K pilot 667 qualified leads 50× ROI
The default

You’re paying four vendors to not solve this.

Fig. 01
Fragmented stack

Four vendors who don’t talk.

Bookkeeper, receptionist, marketing agency, IT. Four invoices, four logins — none built for how an ADU shop runs.

Lost bids

You lose bids you should win.

Generic cover. Budget structured like a custom home. The work was there — the document didn’t sell it.

Time bleed

You close the books on Sundays.

You answer phones on site visits. The admin scales with every job — and all of it lands on you.

Who this is for

Built for emerging builders. Not everyone.

Fig. 02 · ICP
Who this is for
  • + Emerging ADU builders scaling $1–3M → $5–10M+
  • + Owner-operator, founder-led, wears all the hats
  • + No bookkeeper/marketing yet — open to outsourcing
  • + Camera-comfortable, with a real angle to amplify
  • + Outside SoCal
Who this isn’t for
  • × Established $7M+ shops with existing back-office staff
  • × Builders who want marketing only, no back-office access
  • × No unique story or differentiation to market
  • × Camera-shy founders
  • × SoCal builders — that’s RYCO’s lane
01 · What’s in the pilot · from Yang’s own build

Everything you need to scale your ADU shop. One price. One deliverable.

Fig. 03

The pilot includes both the back-office we set up and the marketing engine we run. These aren’t products you pick between — they’re what’s in the single bundled pilot. No tier-shopping. No add-ons.

Back-officeWe run your operations

We run your operations.

  • 01JobTread instance + management — you never touch it
  • 02Vendor-bill OCR + processing (AP)
  • 03AR invoicing + draw schedules
  • 04Expense tracking + job-cost reports
  • 05Phone receptionist on your forwarded line
  • 06Monthly P&L per job + cash dashboards
  • 07Year-end CPA handoff package

// Set up during the pilot. Runs through Phase 2 maintenance.

Marketing engineWe run your growth

We run your growth.

  • 01HeyGen founder video content, weekly
  • 02Custom website, built and maintained
  • 03Organic social pipeline, founder-voice
  • 04Meta + Google ad campaigns, at cost
  • 05Proposal cover renders + budget structuring
  • 06Weekly performance + lead-volume reporting

// Full intensity during the pilot until the lead-volume target hits.

The deal

Everything above is included in the pilot price. The pilot delivers a defined number of qualified leads based on your revenue target. After we hit it, the back-office keeps running at a $3–7K/mo maintenance fee.

02 · Why GCStack

Most agencies have never been on a job site. We’ve poured foundations.

Fig. 04 · The moats

Two things no other agency can copy — because both require a licensed ADU builder who’s won and lost bids on his own name.

Moat 01 — Proposal craft

Proposals that look like a contract worth signing.

Cover renders, budget structure, and scope framing by an ADU specialist who’s been across the table from your customers.

Most agencies edit your proposals. We redesign them to win: front-loaded city fees, solar, design-fee credit, JADU bundling. The structure that closes ADU bids — not a custom-home template.

Cover A · Before
PROPOSAL.PDF
Generic · template
Cover B · After
RENDER ADU cover · budget-structured
HeyGen avatar Founder video frame · placeholder
Moat 02 — Founder content engine

Your founder, on video, every week. Without filming.

AI-generated founder video at production scale. Homeowners respond to a builder’s face — not an anonymous brand ad. Trust lands at the exact touchpoint where bids are won.

It drops cold-acquisition CPL 30–40% versus static. Most agencies can’t produce this. We do it for every client.

$80$80 CPL, after HeyGen
03 · How pricing works

Three questions. One number. One price.

Fig. 05

We don’t sell tiers, retainers, or “starting at” fluff. Three filter questions gate every prospect. Pass all three, tell us one number, and the math is on the table.

// Built by a builder — the same transparency we’d want as contractors paying for a service.

Q1 Filter

Are you camera-savvy?

Can you do 5–10 minutes of training footage for HeyGen, plus occasional camera time for organic content?

Tap to mark yes →
Q2 Filter

What’s your unique angle?

Why would someone hire you over another ADU builder? A story, a niche, a market advantage we can amplify.

Tap to mark yes →
Q3 Filter

Open to us running your back-office?

Phones, books, proposals, JobTread. We do it all — you focus on the build. It’s required, not optional.

Tap to mark yes →
0/3 — tap each question that’s a yes to unlock your price GATE
The capacity question

What’s the max new contract volume you could productionize in the next 12 months?

$
$2M$10M$20M
Your 12-mo target$5M
Pilot price · 2% of target$100K
Qualified leads we deliver667
ROI at this pilot price50×
After the pilot — back-office maintenance$5K/mo

Pilot price is 2% of target, paid over 3 months. Includes ad spend at cost, full Office setup + run, and the marketing engine at intensity until the lead-volume KPI hits.

Ads at cost

Ad spend is included in the pilot price. No markup. Ever. Audit the accounts any time.

Open-ended deliverable

We work until the lead-volume target hits at quality threshold. Defined outcome, not billed hours.

Assets stay yours

Cancel anytime. Keep the videos, site, audience, and accounts we built in your name.

04 · What you get

$100K pilot. $5M signed. 50× ROI.

Fig. 06 · The math
12-month outcome PROJECTED
~$1M
Without usScaling on your own, admin-bound
$0M
With us$5M signed in 12 months
$0Signed contract volume$5M
50× Return on every pilot dollar
Target12-month signed contracts$5M
ContractsAt $250K avg ADU20
LeadsAt a 3% close rate667
Ad spendAt $60 CPL — included$40K
Pilot price2% of target · paid over 3 mo$100K
Builder proof — not a projection

Yang closes ADU proposals at 35–40%. Industry average is 1–3%. The proposal craft is why your leads convert — and why he built the system in the first place.

We don’t waste your money on cold ads at small budgets. Below $1,800/mo ad spend, Meta’s algorithm can’t optimize and leads stay expensive. If your target is small, we use the $50K floor and a smaller lead deliverable.
05 · Straight talk

How a builder would expect to be treated.

Fig. 07
Ad spend

Most agencies make money on your ad spend. We don’t.

Our fee is for the creative engine — HeyGen, custom site, organic, back-office setup. Your ads are your investment, passed through at cost.

0%vs. the typical 10–15% markup
SoCal

If you’re in SoCal, we won’t take you on.

Yang’s RYCO operates there. We don’t compete with the prospects we’re supposed to help. Different lanes — honest about the conflict.

Bay AreaSacramentoOregonWashingtonArizonaTexasFloridaColoradoSoCal
Ownership

Cancel anytime. You keep what we built.

You keep every asset you built. We keep the production engine. After you leave, you have it all — just not the pipeline to make more.

You keep
  • Videos + raw files
  • Website + domain
  • Social + audience
  • Ad accounts + pixel
We keep
  • HeyGen avatar setup
  • Script + prompt library
  • Founder-voice method
  • Production workflow
06 · Watch the system work

See the entire system in 8 minutes.

Fig. 08 · Funnel entry

Real RYCO numbers. Real JobTread dashboards. Real HeyGen ads. Real proposal covers. The actual system running my own ADU shop — and exactly how it’d run yours.

8:14 Case-study video · screen-share + camera
Funnel · 5 questions, then the video
01Current monthly revenue
02ADU / general GC / remodel
03What state? — SoCal redirects to the free playbook
04Comfortable on camera for 5–10 min?
05Name + email → video delivered instantly
Watch the case study >

No sales call required to watch. The video is the value. If you want to talk after, you can book a call at the end.

07 · By a builder

Yang.

Fig. 09 · Founder
Shuo Yang
Portrait · Shuo YangRYCO · SoCal

Software engineer turned licensed GC. Founding engineer at Textura — the construction-finance platform acquired by Oracle that processes billion-dollar monthly volume. Now runs RYCO, an ADU-focused shop in SoCal, where he’s built 40+ ADUs and runs his own books in JobTread.

GCStack is the system he built to run RYCO — productized for emerging ADU builders outside his market. He knows your numbers because they’re his numbers.

  • CA Lic. GC · Class B
  • Founding Eng. · Textura
  • Acq. Oracle
  • 40+ ADUs built
  • Runs his own books
08 · Questions

Straight answers.

Fig. 10
Begin

Watch the case study.

See the system work in 8 minutes. Three filter questions, one price formula, no sales call required.

Watch the case study >