The first 90 days of standing up a lean family office

Standing up a lean family office is less like launching a startup and more like installing a nervous system. If you chase branding, office art, and a CIO search in week one, you will get a costume. If you chase mandate, controls, inventory, and rhythm, you will get an institution — small, but real.

This is a ninety-day plan for families who have already decided that advisor-core or bank-hub coordination is insufficient. It assumes a lean / hybrid posture: a Chief Integrator, finance/ops backbone, and external specialists (tax, legal, investments, risk, legacy). It is compatible with an MFO partnership. It is deliberately incompatible with empire theater.

Work the days in order. Skipping ahead is how you hire the wrong people for the wrong reasons.

Before Day 1: freeze the vanity moves

Do these before anyone orders letterhead:

Write the mandate one-pager. Purpose; in scope; out of scope; decision rights; success metrics; kill criteria.
Set a three-year budget ceiling (comp, benefits, systems, occupancy, contingency). Approve it as principals.
Name the principal sponsor. One human who will unblock decisions weekly.
Impose a hiring freeze except the Integrator and controller capability until Day 60 reporting exists.
Tell key existing advisors what you are building (integration), so they do not experience the project as a secret firing squad.

If you cannot complete (1)–(3), you are not in a ninety-day stand-up. You are in a wish.

Days 1–30: Inventory, Charter, Integrator, controls

Week 1 — Map reality

Deliverables:

Entity inventory: legal name, jurisdiction, ownership, purpose, accounts, signatories, tax ID status.
Advisor inventory: firm, primary contact, scope, fees, last deliverable, last joint meeting.
Asset inventory: financial accounts, private investments, real estate, lifestyle/legacy assets with rough TCO.
Pain inventory: last three coordination failures (even if embarrassing).

Working session: Principals + temporary project lead (or newly hired Integrator). Four hours. Laptops open. No aspirational storytelling.

Output artifact: a single folder (vault) with those four inventories as living documents.

Week 2 — Legacy Charter and decision rights

Draft a Legacy Charter of two to five pages: purpose, values, what legacy assets are for, non-negotiables (privacy, philanthropy stance, risk posture), and how conflict will be handled. This is not poetry. It is the North Star for staff and Council.

In parallel, complete a simple decision-rights matrix (RACI-lite) for:

Wires above threshold
New manager hire
Lifestyle asset purchase / major refit
Gifts and related-party deals
FO budget changes

Test: Can a stranger read the matrix and know who decides?

Week 3 — Install money movement and cyber hygiene

Before clever reporting, stop preventable disasters.

Dual control on payments above a defined amount (two adults; not "one adult and a PDF").
Password manager and MFA for all financial access.
Revoke stale vendor and family-friend access to accounts.
Document vault permissions: least privilege.
Incident contact list (bank fraud desk, counsel, insurance, Integrator, principals).

Illustrative failure to avoid: hiring an analyst while the bookkeeper and a household manager share a login "for convenience."

Week 4 — Confirm the Integrator and controller backbone

By Day 30 you should have:

A named Chief Integrator with authority to convene advisors and own the calendar.
Controller capability engaged (employee or fractional) with a chart of accounts plan by entity.
A written 90-day plan shared with principals and key advisors.
First "ops huddle" rhythm set (weekly, 30–45 minutes, agenda fixed).

Day 30 checkpoint scorecard (0–2 each, /12):

Mandate signed
Inventories complete enough to act
Charter draft circulated
Decision rights drafted
Dual control live
Integrator + controller seated

Below 8: do not proceed to hiring specialists. Fix foundations.

Days 31–60: Rhythm, vendors, first dashboard, Council seats

Week 5 — Meeting architecture

Put the year on the calendar now — or it never happens:

Weekly ops huddle (internal)
Monthly principal CFO meeting (60–90 minutes)
Quarterly Council / advisor deep-dives
Annual summit date
Tax estimate calendar
Insurance renewal calendar
Major asset survey / capex calendar (if applicable)

Send calendar holds. Protect them like investment committee meetings at a real company.

Week 6 — Vendor and advisor rationalization

You are not firing everyone. You are assigning owners.

For each major vendor/advisor: keep / probation / replace / consolidate.
Assign an internal counterpart for each keep.
Request engagement letters and fee exhibits into the vault.
Schedule the first joint tax + legal + investment call with a real agenda (liquidity, entities, upcoming transactions).

Rule: No new strategic vendor until the keep/probation list exists. Otherwise you add noise.

Week 7 — Version-one dashboard

Ship an imperfect dashboard. Perfect is the enemy of orientation.

Minimum panels:

Consolidated liquidity (30/90/180 days)
Known obligations (taxes, capital calls, tuition, asset capex)
Investment snapshot (high level; not a novel)
Lifestyle / legacy asset burn vs budget (even if rough)
Open risks (top five) with owners
Decisions needed from principals this month

Present it in the monthly principal meeting. Take criticism. Improve next month. Do not rebuild tools for six weeks in the dark.

Week 8 — Council seat gap-fill

Using the five-role Council lens (legal architect, asset manager/FO architect, risk/insurance, tax strategist, culture/legacy):

Mark each seat: strong / partial / missing.
Fill the most dangerous gap first (often risk mapping or tax strategy for mobile assets — not a lifestyle hire).
Brief every external seat on the Charter and decision rights.
Announce the annual summit date and pre-read expectations.

Day 60 checkpoint (/12):

Calendars hold for the year
Advisor keep/probation list done
Joint advisor meeting held
Dashboard v1 delivered
Council gaps ranked and one gap in active hire/RFP
Monthly principal meeting occurred twice with notes

Below 8: extend Day 60 goals; do not launch investment hiring sprees.

Days 61–90: Policy spine, IPS draft, lifestyle boundaries, proof tests

Week 9 — Policy spine (short documents beat binders)

Create one-to-three page policies for:

Investment Policy Statement outline (even if OCIO will refine) — including passion-capital bucket limits
Lifestyle asset approval thresholds
Related-party and gift policy
Privacy / media / NDAs for staff and key vendors
Records retention basics
Travel and expense for FO staff

Policies should be readable. If staff need a lawyer to interpret the expense policy, you have failed the lean test.

Week 10 — Lifestyle desk boundaries

If lifestyle demand is high, either:

A) Explicitly put lifestyle coordination in scope with hours and budget, or
B) Outsource concierge and keep FO staff off floral emergencies.

Write service levels: what is handled in 24 hours, what is weekly batch, what is declined. Principals must sign this. Unsigned lifestyle scope becomes the silent killer of finance quality.

Week 11 — Controls proof tests

Run drills:

Dual control payment test (small, real).
Vault restore / access test.
Fraud response tabletop (30 minutes): who calls whom.
"Principal unavailable" test: can the office operate for two weeks under written limited powers?

Document results. Fix gaps. This is stewardship, not paranoia.

Week 12 — Ninety-day review and Year-1 roadmap

Hold a half-day principal review:

Mandate: still true? What is out of scope that crept in?
Scorecard: Day 30 / Day 60 / Day 90 metrics.
Cost vs. value: what decisions improved?
Hiring plan for next two quarters (sequence only).
Kill criteria check: any early warning?
Authorize Year-1 roadmap: dashboard v2, annual summit, tax-ops maturity, cyber roadmap, next-gen education pilot.

Day 90 success looks like:

A functioning Integrator-led rhythm
Controls that are real, not theoretical
A dashboard principals actually use
Advisors convened as a Council, not a coincidence
A written Year-1 plan with budget and freezes still respected

Day 90 failure looks like:

Beautiful office, weak vault
Staff acting as concierge without budgets
No dual control
No joint advisor meeting yet
Principals bypassing the office on every interesting decision

If you see failure patterns, resize immediately. Sunk cost is not a strategy.

Day-by-day style checklist (condensed)

Days 1–30

[ ] Mandate signed
[ ] Budget ceiling set
[ ] Inventories (entity, advisor, asset, pain)
[ ] Charter draft
[ ] Decision rights matrix
[ ] Dual control + MFA + vault permissions
[ ] Integrator + controller seated
[ ] Weekly ops huddle live

Days 31–60

[ ] Annual calendar holds
[ ] Advisor rationalization
[ ] First joint advisor meeting
[ ] Dashboard v1
[ ] Council gap plan
[ ] Two monthly principal meetings with notes

Days 61–90

[ ] Policy spine drafted
[ ] IPS outline + passion-capital limit
[ ] Lifestyle service levels signed
[ ] Controls drills completed
[ ] Day-90 review held
[ ] Year-1 roadmap approved

Scored diagnostic: Are you ready to start the 90 days?

Score Yes = 1. Need 8+ to begin.

Principals agree on the problem to solve (integration), not only the status of "having an office."
Three-year budget ceiling can be funded without reckless portfolio risk.
One principal sponsor will meet weekly for ninety days.
You can tolerate imperfect dashboards in month two.
You will freeze nonessential hiring until Day 60.
Tax and legal relationships are stable enough to brief (or a replacement search is already owned).
You will put lifestyle scope in writing.
You accept that some peer offices are overbuilt and you will not copy them.
Kill criteria are written in advance.
Someone owns cyber hygiene as a workstream, not a vibe.

Illustrative ninety-day arcs

Illustrative — "The costume." A family announces an SFO, leases space, hires a chief of staff and a lifestyle manager in month one, and postpones dual control "until systems are chosen." In month three, a wire fraud attempt nearly succeeds. The office becomes a cautionary tale at dinner parties. The fix would have been boring: controls before titles.

Illustrative — "The nervous system." A family hires a fractional Integrator and fractional controller, completes inventories in two weeks, runs dual control by Day 21, ships a spreadsheet dashboard by Day 45, and holds a joint advisor summit by Day 55. No logo. By Day 90 they approve one full-time ops hire with clear KPIs. Decision quality is already up. Ego is quiet. That is lean.

Staffing timeline (recommended)

Day 0–15: Integrator search complete or interim named
Day 15–30: Controller capability live
Day 60–90: Optional ops generalist if dashboard and controls prove load
After Day 90: Specialists only with utilization evidence

Recruiters will urge speed. Utilization is the only honest recruiter.

What to communicate to the family (and what not to)

Do communicate: purpose of the office, how decisions will be made, how privacy will be handled, how next-gen can engage later.

Do not communicate: that the office will make life frictionless, that staff will take sides in sibling disputes, or that investment outperformance is guaranteed because you have a new title on LinkedIn.

Expectation management is part of stand-up. Unspoken fantasies become staff burnout.

Tools: enough to start, not enough to drown

Days 1–90 tool philosophy:

Vault with permissions (cloud document system is fine if configured well)
Shared password manager
Accounting system capable of multi-entity
Secure email / channel for principals and FO lead
Simple dashboard in Sheets or a lightweight reporting tool
Calendar

Postpone the "platform bake-off" until after Day 90 unless a current tool is actively unsafe. Tool shopping is a popular avoidance behavior.

Budgeting the stand-up without self-deception

Create three budget lines for Year 0 (the stand-up year):

People — Integrator, controller, any approved ops support; benefits; recruiting.
Systems & security — vault, accounting, password management, cyber basics, insurance riders as needed.
One-time clean-up — entity cleanup, historical book reconstruction, legal hygiene, insurance re-papering.

Principals often fund (1) generously and starve (3). That produces a polished team sitting on dirty data. Prefer a temporary spike in clean-up spend during Days 1–90. It is the highest-ROI dull investment you will make.

Add a contingency of 10–15% for the surprises inventories always surface (an entity nobody remembered, a K-1 archive gap, a household employment filing mess). Surprises are normal. Unfunded surprises become corner-cutting.

Change management with long-time household staff

If you have household managers, PAs, or informal "fixers" who previously controlled vendors and calendars, the office can feel like a threat. Handle this explicitly:

Clarify that the office owns financial controls and vendor contracts above thresholds; household roles retain day-to-day excellence within policy.
Offer training on new request channels rather than humiliating workarounds.
Do not use the FO as a stealth performance-management tool for household staff — that poisons both systems.
If someone cannot accept dual control, they cannot retain payment authority. Be kind; be clear.

Most resistance is fear of losing status. Restore dignity with clarified scope, not with silent carve-outs that break controls.

How MFO partners fit the 90-day plan

If your "lean office" is mostly an MFO:

Days 1–30 still belong to you: mandate, Charter, decision rights, inventories.
Use the MFO for controller reporting, investment ops, and process templates.
Keep a family-side Integrator (even part-time) who can say no to standardized packages that erase your Legacy Intentionality.
Put the MFO lead on your Council calendar with tax and legal — do not let "the platform" become another silo with better software.

The MFO is infrastructure. You still need a brain that represents the family's Charter.

Red-flag behaviors during stand-up (stop and reset)

Principals announce the office on social media before dual control exists.
A hire is made to "keep a relative busy."
Investment co-invest opportunities are sourced before IPS outline exists.
Dashboard is delayed for a six-figure software implementation.
Counsel and tax are excluded from early meetings "to keep momentum."
Lifestyle exceptions are granted verbally "just for this month" more than twice.

Any two of these simultaneously: pause hiring, return to Day 1 deliverables, and re-brief the principal sponsor.

Sample weekly ops huddle agenda (30–45 minutes)

Liquidity and wires this week (5)
Open tax/legal items with dates (5)
Vendor / asset issues (10)
Dashboard changes / data gaps (5)
Principal decisions needed (5)
Risks newly observed (5)

Minutes live in the vault the same day. If huddles become therapy sessions, the Integrator must cut scope and escalate to the principal sponsor.

Sample monthly principal CFO agenda (60–90 minutes)

Dashboard review (20)
Decisions due (20)
Upcoming ninety-day obligations (10)
Council / advisor topics (15)
Mandate creep watchlist (10)
Executive session without staff if needed (variable)

End every meeting with written decisions and owners. Conversation without decisions is a salon.

Final Day-90 question for principals

Sit alone for ten minutes and answer in writing: If we disappeared for a month, would the office protect the family — or merely await instructions? If the honest answer is the latter, you have staffed messengers. Extend the plan, strengthen decision rights, and keep the hiring freeze until the office can operate as a nervous system, not a waiting room.

Stewardship prefers that harder standard.

Closing synthesis for Week 2

This week moved from Council (who advises) to office (how advice becomes operating rhythm) to architecture choice (what housing fits) to org charts (how boxes should scale) to stand-up (how to install the nervous system in ninety days).

The through-line is integration. Legacy assets and UHNW complexity do not forgive fragmented brilliance. They reward stewards who can name a Chief Integrator, write a Charter, convene specialists, and keep trophies from owning the family.

If you do only one thing after reading: put a ninety-minute joint meeting on the calendar with tax, legal, and your lead wealth advisor — agenda: entity map, ninety-day liquidity, top five risks. That single act begins a Council even before an office exists. The lean office, when you need it, will have something real to institutionalize.

After Day 90: the first "no" that proves the office is real

The office becomes real the first time it refuses an out-of-scope request with the mandate letter as backup — and the principal sponsor supports the refusal. Until that happens, you have a polite project. Schedule a deliberate early test: a nonessential lifestyle request that should be declined or deferred. Support the staff when they follow the rules you wrote.

Documentation standard for Days 1–90

Every major decision in the stand-up gets a one-paragraph note in the vault: date, decision, owners, why. This feels pedantic until a principal asks six months later why a bank was kept or a hire delayed. Institutional memory starts on Day 1, not when the first employee resigns.

Related reading and tools live on the Books and Resources pages. Educational only — not legal, tax, or investment advice for your situation.

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