Family office portfolios span trusts, LLCs, foundations, and personal accounts across multiple custodians. Your data platform should see all of it — together.

A family office data platform is infrastructure that consolidates financial data across the full complexity of a family's wealth structure — multiple entities (trusts, LLCs, LPs, foundations, personal accounts), multiple custodians (often 3–5+), alternative investments (private equity, real estate, venture, hedge funds), and operational data (bill pay, insurance, estate planning, tax) — into a single, queryable data environment that the family controls. Most family offices operate without one, relying instead on spreadsheets, custodian portals, and quarterly PDF reports from multiple advisors.

The Family Office Data Problem

Family offices are the most data-complex entities in wealth management. A single family may have 15–50+ accounts across 3–5 custodians, held in 5–10+ entities. The structural variety alone — irrevocable trusts, family limited partnerships, operating LLCs, foundations, personal brokerage and retirement accounts — creates a data environment that no off-the-shelf reporting tool is designed to handle cleanly.

Alternative investments compound the problem. Private equity, venture capital, real estate holdings, and hedge fund interests have no custodian data feed. Information arrives as PDFs, K-1s, capital call notices, and quarterly reports from individual fund managers — in different formats, on different schedules, with no standardization. Tracking this data alongside liquid portfolio assets requires manual effort every quarter.

The coordination failure is structural. Each advisor, attorney, tax preparer, and investment manager sees only their slice of the picture. The estate attorney knows the trust structures. The investment manager knows the liquid portfolio. The CPA knows the tax positions. Nobody — not even the family — has a unified view of total net worth, total exposure, or total performance across everything.

The family's most important financial question — "How are we doing across everything?" — is the hardest one to answer. Existing solutions like Addepar, PCR, and Archway address parts of this problem, but they are expensive, require dedicated staff, and often still require manual data entry for alternative investments. For most families, the unified view exists only on paper, assembled quarterly by hand.

What a Unified Family Office Data Platform Enables

01

Total Net Worth View

Every entity, every custodian, every asset class — liquid and illiquid — in one consolidated view. Updated automatically for custodied assets, manually supplemented for alternatives.

02

Multi-Entity Reporting

Performance, allocation, and exposure reporting at the entity level, the individual level, and the family level. Roll up or drill down without switching systems.

03

Cross-Custodian Visibility

Schwab, Fidelity, Pershing, Goldman, JPMorgan — consolidated positions and transactions normalized into one data model regardless of source.

04

Alternative Investment Tracking

Private equity commitments, capital calls, distributions, and estimated valuations alongside liquid portfolio data. Not a complete automation — but structured tracking in the same platform.

05

Tax Lot and Cost Basis Coordination

Unified tax lot data across custodians for harvest planning, gain/loss analysis, and tax projection across entities.

06

Generational Planning Analytics

Multi-generational wealth transfer modeling, estate structure visualization, and beneficiary mapping across trusts and entities.

How Milemarker Works for Family Offices

Milemarker connects to custodians — Schwab, Fidelity, Pershing, Goldman, and others — and normalizes position, transaction, and performance data into your Snowflake warehouse. CRM data from Salesforce, Wealthbox, or internal systems joins to the financial data in the same environment.

Entity structures are modeled in the data layer. Accounts map to entities. Entities map to family members. Family members map to the family. This hierarchy makes it possible to report at any level — a single trust, a family member's consolidated picture, or the full family view — from the same underlying data without rebuilding the query each time.

Alternative investment data can be structured and loaded alongside custodied data. This typically involves uploading capital account statements, fund performance reports, or structured templates that Milemarker normalizes into a consistent model. The result is a single data environment where private and public assets share the same structure.

AI queries work across the full family picture. The data platform can respond to questions like "What is our total real estate exposure across all entities?" or "Which trusts have unrealized gains above $500K?" because the entity relationships and the financial data exist in the same queryable environment.

Critically, the family — or the family's designated advisors — own the Snowflake instance. The data belongs to the family, not to a vendor. The platform is not locked to Milemarker's reporting layer. The family's tax advisors, estate attorneys, investment consultants, and internal staff can all access the data they need with role-appropriate permissions.

Before Milemarker

4 custodian portals to check

Net worth assembled quarterly in Excel

Alts tracked in a separate spreadsheet

Entity-level reporting requires an accountant

No unified performance view

Tax planning across entities is manual

With Milemarker

One consolidated data platform

Net worth updated daily for custodied assets

Alts structured in the same data model

Entity, individual, and family-level views

Cross-entity performance and allocation

Tax lot data unified across custodians

Who This Is For

Single Family Offices

Single family offices with $100M+ in investable assets and multi-entity structures are Milemarker's core family office profile. The combination of meaningful scale, structural complexity, and the need for a private, controlled data environment aligns directly with what Milemarker provides. These families benefit most from owning their data infrastructure outright rather than depending on vendor-controlled reporting platforms.

Multi-Family Offices

Multi-family offices managing data across multiple family groups face the same structural complexity at greater scale. Milemarker can support a multi-family office environment where each family's data is partitioned appropriately while firm-level reporting and operations run across all accounts. The data model accommodates this without requiring separate platform instances per family.

RIAs with Family Office Clients

Registered investment advisors serving family office clients often need consolidated reporting across complex structures that their standard portfolio management systems were not designed to handle. Milemarker can operate as the data layer that supports these clients without displacing the advisor's existing operational systems.

Family Office Advisors and Consultants

Attorneys, CPAs, investment consultants, and family office advisors who need a data backbone for their recommendations can work with Milemarker's structured environment. Role-based access allows each advisor to see the data relevant to their function — estate structures for the attorney, tax lots for the CPA, portfolio performance for the investment consultant — without accessing the full family picture unnecessarily.

Frequently Asked Questions

Does Milemarker replace our portfolio management system?

No. Milemarker is a data platform that connects to your existing systems. If you use Addepar, Orion, or Black Diamond, Milemarker can ingest that data alongside custodian and CRM data. The goal is to unify what you already have, not to replace it.

Can Milemarker handle alternative investments?

Milemarker can structure and store alternative investment data — PE commitments, capital calls, distributions, and valuations — alongside liquid portfolio data. Alt data typically requires some manual input or structured file upload since there are no standard data feeds for private investments. The result is a single data environment where both asset classes are visible together.

How does entity-level reporting work?

Milemarker's data model maps accounts to entities and entities to family members. Reporting can be generated at any level — individual account, entity, family member, or consolidated family — from the same underlying data. The hierarchy is configured during setup to reflect the family's actual structure.

What custodians does Milemarker connect to?

Milemarker connects to all major custodians including Schwab, Fidelity, Pershing, and others. For family offices using private bank custody — Goldman, JPMorgan, Northern Trust — connectivity depends on available data feeds and can be evaluated during a strategy call.

Is our family's data secure?

Yes. Data is stored in a Snowflake instance your family controls. Milemarker maintains SOC 2 Type II certification. Data is encrypted in transit and at rest. Access is controlled by the family or its designated advisors — Milemarker does not retain or resell family financial data.

Can our tax advisor and estate attorney access the data?

Yes. Role-based access can be configured so different advisors see the data relevant to their function without accessing the full family picture. A tax advisor can access cost basis and gain/loss data across entities without seeing estate planning structures or other financial detail outside their scope.

How long does setup take?

Most family offices have custodied data flowing within 1–2 weeks. Full setup including entity structure modeling and alternative investment data typically takes 4–8 weeks, depending on the complexity of the family's structure and the number of data sources involved.

What does Milemarker cost for a family office?

Pricing is based on the complexity of the data environment — number of custodians, entities, and data sources. A strategy call will scope the engagement and provide transparent pricing. There are no hidden fees or per-seat charges that escalate with team size.

Related guides

Part of the Data Infrastructure series:

• Snowflake for Family Offices

• Snowflake for Financial Services & Wealth Management

• Data Platform for RIA Aggregators & Consolidators

• Multi-Custodian Reporting for RIAs: Aggregating Data Across Schwab, Fidelity, and Pershing

• What is a Wealth Management Data Platform?

• Data-Driven M&A Due Diligence for RIAs: Evaluate Acquisitions with Confidence