Neptune vs Hartog Baer Zabronsky: Bay Area Estate Planning, Compared

The Bay Area estate planning landscape

The San Francisco Bay Area has one of the highest concentrations of high-net-worth couples in the country: pre-IPO tech employees and founders at SpaceX, OpenAI, Anthropic, and the broader Peninsula tech scene; established tech families in Atherton, Palo Alto, and Marin; second-generation Silicon Valley families with multi-decade asset accumulation; venture capital partners with carried interest waterfalls; and the dual-career professional couples who anchor the broader middle of the Bay Area's wealth distribution.

California is a community property state, which shapes Bay Area estate planning in two practical ways: at the first spouse's death, community property gets a full step-up in basis on both halves (unlike common law property states, which only step up the deceased spouse's half), and the revocable trust needs to be drafted with community property principles in mind. For long-held Bay Area homes in high-appreciation neighborhoods, the community property double step-up is worth substantial capital gains tax savings for the surviving spouse.

The Bay Area estate planning needs split several ways:

• Standard couple plans (W-2 income, primary residence, brokerage and retirement accounts, no closely-held business): Neptune's $2,500 flat fee is competitive against most traditional firms.
• Pre-liquidity tech couples (concentrated equity grants, expected liquidity event in the next 12 to 24 months): the standard plan is the foundation, with a tax-focused trusts and estates specialist handling the SLAT or QSBS structuring on top.
• Multi-generation Silicon Valley families (operating businesses, family LLCs, multi-state real estate, dynasty trust structuring): a specialist boutique like Hartog Baer Zabronsky is the right fit.
• VC and PE partners (carried interest, fund commitments, illiquid investments with complex valuation): specialist work, typically at firms with carried interest tax planning experience.

The two models serve different couples in the Bay Area estate planning landscape. The question for any individual couple is which side they sit on.

Hartog Baer Zabronsky positioning

Hartog Baer Zabronsky (formally Hartog, Baer, Zabronsky & Verriere APC) is an Orinda-based trusts and estates boutique serving Bay Area clients. The firm was founded in 1991 and includes approximately 10 attorneys. Per the Chambers T&E rankings, the firm is spotlighted in the Trusts and Estates practice area for Orinda. The firm's positioning is the depth of specialist work: complex estate tax planning, trust administration, dynasty trust structuring, and trust and estate litigation when disputes arise.

The Bay Area estate planning fee structure at Hartog Baer Zabronsky is typically hourly. Senior partners in Bay Area T&E boutiques bill $500 to $800 per hour per current Bay Area rates data; associates $300 to $500. A standard couple plan involves 15 to 25 hours of attorney time across drafting, intake, and review, putting the total in the $7,500 to $20,000 range. Complex estates (SLATs, GRATs, family LLC integration) climb from there to $25,000 and beyond.

The strength of the boutique model in Bay Area estate planning is the depth on the specialist work. The trade-off is the higher cost and longer timeline for couples whose estate is more on the simple side.

What Hartog Baer Zabronsky does well that Neptune is not built for:

• Multi-generational trust administration: dynasty trusts, generation-skipping transfer tax planning, multi-decade trust supervision.
• Trust and estate litigation: when disputes arise, having a litigation-experienced firm matters. Per the U.S. News profile, the firm's litigation bench is a distinguishing feature.
• Complex tax-driven structuring: SLATs, GRATs, ILITs, CRTs, charitable lead annuity trusts, family LLC integration.
• Multi-state real estate planning: state-by-state trust funding analysis for couples with property in multiple jurisdictions.
• Family office coordination: working alongside the family's investment advisors, accountants, and other professionals.

Neptune positioning

Neptune is an online concierge estate plan at $2,500 flat fee, all-in for both partners. The intake is AI-led: you and your partner answer a structured set of questions about your assets, beneficiaries, healthcare wishes, and guardian preferences. Once intake is complete, a state-licensed California estate planning attorney drafts your documents, reviews them with you, and finalizes them. Most couples complete the plan in two to four weeks.

The strength of the concierge model is the price predictability and the timeline. The trade-off is the scope: Neptune is built for standard couple estates. For couples with operating businesses, multi-state real estate, or estates near the federal exemption, Neptune refers to a specialist.

What Neptune does well that Hartog Baer Zabronsky is not built for:

• Defined timeline: two to four weeks from intake to signed documents.
• Defined price: $2,500 flat, no hourly billing on top.
• Compressed intake: two to three hours of the couple's time spread across one to two weeks.
• Couple-first packaging: both spouses guided through the process together rather than scheduled separately.
• Long-term partner relationship: easy to update the plan as life changes (new child, home purchase, change in financial picture) without restarting the process.

How the price difference happens

Hourly billing at a traditional firm spends most of the attorney time on intake: collecting your asset list, beneficiary information, healthcare wishes, and document preferences. A senior estate attorney at $600 per hour spending 10 hours on intake is $6,000 before any drafting happens.

Neptune compresses the intake into an AI-led conversation that takes two to three hours of your time, spread across one to two weeks. The state-licensed attorney does not spend billable hours on the intake; they focus on drafting, review, and legal judgment. The cost savings come from removing the most repetitive part of the attorney's work, not from removing the attorney.

For a standard couple plan, the document set is the same in either model. The price difference reflects the model, not the deliverable. The revocable trust at the center of the plan is drafted the same way whether it comes from Neptune or from a Bay Area boutique.

When Hartog Baer Zabronsky is the right choice

Hartog Baer Zabronsky is the right fit for couples who:

• Hold a closely-held operating business with succession planning needs.
• Have multi-state real estate with state-tax considerations across jurisdictions.
• Are at or above the $30M federal exemption and need irrevocable trust structuring (SLATs, GRATs, dynasty trusts).
• Have a contested trust or estate matter that needs litigation experience.
• Want a long-term relationship with a specialist boutique for ongoing administration.
• Hold carried interest or other complex investment positions that require specialist tax planning.
• Have multi-generational planning goals (grandchildren, dynasty considerations, charitable foundations).

When Neptune is the right choice

Neptune is the right fit for couples who:

• Have a standard couple estate (W-2 incomes, primary residence, brokerage and retirement accounts).
• Are below the $30M federal exemption and not approaching the cliff (California has no state estate tax, so the federal threshold is the operative number).
• Want a defined timeline (two to four weeks) and a defined price ($2,500 flat).
• Are comfortable with a digital intake process.
• Want both spouses' documents drafted in one engagement rather than separately.

For most Bay Area couples in the W-2 income bracket with a primary residence and brokerage accounts, Neptune is the right starting point. For Bay Area couples with operating businesses, multi-state real estate, or pre-liquidity equity that requires specialist tax planning, Hartog Baer Zabronsky or another specialist boutique is the right starting point.

How to evaluate a Bay Area trusts and estates boutique

If you are choosing between specialist boutiques, the practical evaluation criteria for Bay Area estate planning:

• Practice depth: how many T&E attorneys on staff, what their specialties cover, whether they have the depth to handle your specific complications.
• Tax planning specialization: federal estate tax, NY state estate tax (for clients with NY connections), generation-skipping transfer tax, charitable planning.
• Trust administration capability: ongoing trust supervision after the grantor's death, fiduciary income tax return preparation, beneficiary distribution management.
• Litigation experience: when disputes arise, having a firm that has actually been in trust litigation matters.
• Fee transparency: hourly rate, typical engagement size, billing practices, cap and budget mechanics.
• Communication style: how the firm handles client communication, response time, what's billed and what isn't.

For couples whose situation falls outside Neptune's standard plan scope, asking the right boutique these questions is more useful than comparison shopping on hourly rate alone.

Where the two models work alongside each other

A common pattern in the Bay Area: a couple in their early 30s with W-2 income and a Noe Valley Victorian uses Neptune for the foundation. Three years later, one partner joins a pre-IPO startup with meaningful equity vesting over the next four years. The couple keeps Neptune for the foundation (revocable trust, core documents, ongoing updates) and adds a Hartog Baer Zabronsky engagement for the SLAT structuring 12 to 18 months before the expected liquidity event. The two firms work alongside each other; Neptune handles the foundation that the specialist work sits on top of.

This pattern is increasingly common in Bay Area estate planning as tech couples move through the equity-vesting arc. Couples start with the standard plan at $2,500 and add specialist work as the financial picture changes. Bay Area estate planning is often layered this way rather than delivered as a single monolithic engagement.

Related guides

• Pre-Liquidity Tech Guide
• What is SLAT
• RSU Tax California