Atlas — Full Build Cost | ROAM International

Part A — 320 hrs · £32,000

Atlas AI Backend

Everything that makes Atlas "think" — the agent infrastructure, channel integrations, AI logic, data pipelines, and knowledge systems. This is the backend that powers both the Concierge and Investor Agents. The Investor Portal (Part B) sits on top of this.

A1 — Infrastructure & Channel Setup Month 1

Item	Hours	Cost
Supabase project setup — database schema, Edge Functions, auth, storage	8	£800
Chatwoot Cloud Pro — inboxes for WhatsApp, web widget, email, Instagram, Airbnb	6	£600
WhatsApp Business API via 360dialog — account setup, verification, inbox connection	6	£600
n8n Cloud — automation workspace, Chatwoot → Odoo sync, webhook pipelines	5	£500
Odoo CRM — initial setup, fields, team access, n8n sync configuration	5	£500
Subtotal	30	£3,000

A2 — Concierge AI Agent Months 2–5

Item	Hours	Cost
Supabase Edge Function — Claude agent core, Chatwoot webhook handler, reply pipeline	20	£2,000
Message routing engine — tier classification (auto / HITL / escalate), confidence scoring	16	£1,600
Human-in-the-loop (HITL) review system — flagging, approval flows, team assignment	12	£1,200
Guest memory engine — preference profiles, stay history, Supabase schema, GDPR deletion	18	£1,800
Knowledge base (Supabase) — property guides, FAQs, local area content, retrieval logic	14	£1,400
Jurny PMS integration — live booking lookup, access codes, property data, guest verification	20	£2,000
Booking modification flows — date change, early check-in, add-ons, approval & confirmation	14	£1,400
Proactive outreach — pre-arrival, mid-stay check-in, post-stay review prompt, n8n triggers	10	£1,000
Shadow mode — 2-week parallel testing, response logging, quality review framework	6	£600
Subtotal	130	£13,000

A3 — Investor AI Agent Months 6–8

Item	Hours	Cost
Investor agent Edge Function — conversation handler, context builder, Supabase data retrieval	16	£1,600
Market data ingestion pipeline — nightly CRON pulling AirDNA, Property Monitor, PriceLabs, Land Registry → Supabase cache	20	£2,000
Portfolio analytics engine — per-property performance, aggregate returns, benchmark comparison	18	£1,800
Scenario modelling — bull / base / bear projections, exit strategy analysis, yield estimates	12	£1,200
Opportunity matching — investor profile → market data → shortlist generation	10	£1,000
Report generation — automated quarterly report assembly from Supabase data	10	£1,000
Escalation — "book a call with the team" flow, Odoo deal creation via n8n	6	£600
Subtotal	92	£9,200

A4 — Compliance, Testing & Launch Months 9–12

Item	Hours	Cost
Legal review — investor-facing disclaimer templates, FCA/DFSA boundary check, DPA review	8	£800
GDPR compliance — data processing agreements, Supabase retention policies, deletion flows	8	£800
End-to-end integration testing — all scenario flows, edge cases, error handling	8	£800
Full launch — go-live support, monitoring setup, alerting, on-call response plan	8	£800
Scale & handover — developer documentation, runbooks, optimisation	6	£600
Subtotal	38	£3,800

Part A Total — Atlas AI Backend

290

£29,000

Note on scope: This covers all agent infrastructure — the AI "brain" that processes messages, retrieves data, and generates responses. It does not include the investor portal UI, authentication system, or website integration. Those are costed separately in Part B.

Part B — 120 hrs · £12,000

Investor Portal

The client-facing web application that investors log into. We have the prototype built — this is the cost of converting it to a production app: live data connections, a secure login system, an admin panel for Louise to manage access, and integration into the Roam website via a dedicated subdomain (investors.roamhq.com).

What we already have: A complete, fully-designed HTML prototype of the investor dashboard — portfolio overview, property drill-downs, market intelligence, Atlas chat. The design and layout work is done. Part B is about making it real: connecting it to live data, securing it with authentication, and giving Louise the tools to manage access.

B1 — Authentication & Security 30 hrs · £3,000

Item	Hrs	Cost
Supabase Auth — email/password, magic link, session management	8	£800
Row-Level Security — each investor can only access their own portfolio data	10	£1,000
Invitation-only access — Louise invites by email, investor sets password on first login	7	£700
Two-factor authentication — TOTP app or SMS code, required for investor accounts	5	£500
Total	30	£3,000

B2 — Dashboard Production Build 50 hrs · £5,000

Item	Hrs	Cost
Connect prototype to live Supabase data — real portfolio figures, live charts	12	£1,200
Portfolio summary — total value, blended yield, all properties, cumulative return	8	£800
Per-property pages — individual analytics, occupancy, revenue, market comp	10	£1,000
Market intelligence section — live CRON data (AirDNA, Property Monitor, PriceLabs)	6	£600
Document centre — quarterly reports, statements, secure download from Supabase Storage	8	£800
Mobile responsive polish — full mobile layout, loading states, error handling	6	£600
Total	50	£5,000

B3 — Admin Panel (Louise) 22 hrs · £2,200

Item	Hrs	Cost
Investor management — invite new investor, set portfolio access, deactivate accounts	8	£800
Property assignment — link properties to investor accounts, edit ownership %	5	£500
Conversation audit log — view all Atlas investor conversations per user	5	£500
Report management — trigger quarterly report, upload documents to investor doc centre	4	£400
Total	22	£2,200

B4 — Website Integration 18 hrs · £1,800

Item	Hrs	Cost
Subdomain — investors.roamhq.com setup, DNS configuration, SSL certificate	4	£400
Vercel / Netlify deployment pipeline — staging + production, CI/CD	4	£400
Main Roam website link — "Investor Login" button, consistent brand handoff	3	£300
Resend email setup — invitation emails, password reset, quarterly report notification	4	£400
Security testing — auth bypass check, RLS validation, pen test of data access	3	£300
Total	18	£1,800

Part B Total — Investor Portal

120

£12,000

Auth model recommendation: Invitation-only access via Supabase Auth. Louise adds an investor's email in the admin panel → investor receives a branded invitation email → they set a password and are in. No self-signup. Row-Level Security in Supabase means it's architecturally impossible for one investor to view another's data, even if they manipulate URLs.

Part C — Recurring

Monthly Running Costs

Running costs build up as each phase goes live. Market data subscriptions only kick in once the Investor Agent is active (Month 7+). The full-scale figure below is the steady-state cost from Month 9 onwards.

Phase 1

Months 1–4 · Concierge live

£180/mo

Chatwoot Cloud Pro £39
Claude API (basic) £80
WhatsApp / 360dialog £40
Domain / SSL £5
Supabase (free tier) £0

Phase 2

Months 5–8 · Investor Agent live

£420/mo

+ Supabase Pro £25
+ n8n Cloud £16
+ Odoo Standard £34
+ PriceLabs £50
+ Claude API uplift £120
+ Resend emails £12
+ Vercel Pro £16

Phase 3

Months 9+ · Full scale

£1,050/mo

+ AirDNA £300
+ Property Monitor £150
+ Claude API uplift £100
+ Monitoring £15

Full-Scale Monthly Breakdown

Service	Cost / mo
Chatwoot Cloud Pro — all messaging inboxes	£39
Claude API (Anthropic) — Concierge + Investor agents	£350
WhatsApp Business via 360dialog	£40
Supabase Pro — database, Edge Functions, Auth, Storage	£25
n8n Cloud — automations and CRM syncs	£16
Odoo Standard (2 users) — CRM	£34
AirDNA — short-term rental market data	£300
Property Monitor Dubai — UAE market data	£150
PriceLabs — dynamic pricing data	£50
Vercel Pro — investor portal hosting	£16
Resend — investor invitation & notification emails	£12
Monitoring & alerting	£15
Full-scale monthly total	£1,047/mo

Claude API costs will vary with usage volume. £350/mo assumes a combined load of ~15,000 messages/month across both agents (Concierge + Investor). At £0.015–0.03 per message (Claude Sonnet 4), this is a generous estimate. Low-traffic months will be significantly cheaper.

Scope Clarification

What’s Not Included

The following are either existing costs, legal/professional fees, or third-party setup costs separate from developer hours.

Item	Notes	Est. Cost
Legal review (FCA/DFSA compliance brief)	Commission a solicitor to review investor-facing copy & disclaimers	£1,500–3,000
WhatsApp Business verification	Meta approval process — no cost, but allow 1–3 weeks lead time	£0
Property Monitor Dubai API application	Enterprise data access — pricing on application, allow 4–8 weeks	TBC
Content writing — property knowledge base	20+ property guides at 2–3 hrs each; assign to ops team in parallel	Internal
Jurny plan upgrade (if needed for API write access)	Confirm with Jurny whether your current plan includes API write access	TBC
Domain & SSL (roamhq.com)	Assumed already owned; subdomain DNS config is included in Part B	Existing
Anthropic API key setup	Claude API billed per token — set up billing at console.anthropic.com	Usage-based

Context

How This Compares

The previous architecture plan (pre-serverless, with Mac Mini / Hetzner / Voiceflow / Qdrant) came in significantly higher. Moving to Supabase Edge Functions and stripping out redundant infrastructure layers reduced the build by over 50%.

Metric	Previous Plan	Current Plan	Saving
Backend dev hours	885 hrs	410 hrs	475 hrs (54%)
Total build cost (backend + portal)	£88,500+	£41,000	£47,500+ (54%)
Monthly at full scale	£5,267/mo	£1,047/mo	£4,220/mo (80%)
Year 1 all-in	£151,000+	£47,700	£103,000+ (68%)