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Spencer Brook Capital

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A private investment firm

Patient capital,
tended over cycles.

We invest our own capital in durable assets and the teams building around them, then hold for the long arc.

Read our approach
Tax structuring for development →

Since

2009

Three full market cycles

Net IRR

+14.2%▲ 1.4 pts

Since inception

Committed

$248M

Across direct & funds

Hold period

9.4 yrs

Weighted average

How we work

01 — 03

01

Quality first

We start with the asset. Capital goes to well-located, hard-to-replace assets whose value is inherent rather than narrative — and the right people follow from the right asset.

02

Built to hold

We concentrate in a small number of positions and hold them — through noise, through drawdowns, through the boring middle.

03

Unhurried

We invest our own capital, alongside the founders and assets we back. No outside investors, no fee drag, no forced timelines — which lets us stay patient when others cannot.
OUR APPROACH

How we think
about the portfolio

How we think about returns

Three things drive the return on a durable asset: the price paid relative to its inherent value, the length of the hold, and the after-tax structure the asset sits in. We spend most of our effort on the first and third, because the second largely takes care of itself once the first two are right.

Tax structure is not an afterthought. Opportunity Zone deferral, historic and energy credits, cost segregation, and state and local incentives change the arithmetic of a project materially, and they interact with each other in ways that are easy to get wrong. Working through that arithmetic on our own holdings is a large part of why we can do it for others.

On outside capital

Spencer Brook invests its own capital and is not currently open to outside investors. If that changes, it will be around a specific strategy where we can show a track record on our own capital first, on terms where our incentives and an investor’s are the same.

Holdings

As of 2026

~60%

of committed capital

Direct real estate

A small number of properties in New England, held directly and improved over time.
  • Owned outright through single-asset entities
  • Long hold; value created through improvements

~35%

of committed capital

Founder-led platforms

Operating businesses where we are an active partner, most structured as staged commitments.

  • Land and energy site control
  • Real asset investment management
  • Early consumer software

~5%

of committed capital

Early-stage ventures

A deliberately small sleeve accessed through angel groups and venture syndicates.

  • Infrastructure and climate
  • Medical devices and health
  • Software and consumer

Figures are approximate, based on committed capital, and are provided for context only. Individual holdings are not disclosed.

“We’d rather own a few good things for a long time than many fashionable things for a little while.”

ALONGSIDE THE PORTFOLIO

Tax structuring for
development

WHO THIS IS FOR

Developers with a specific project and a real closing date. Municipalities weighing a revitalization district. Lenders, preservation architects, and CPAs whose clients keep arriving at the same question.

Opportunity Zone deferral, federal and state historic credits, energy credits, and municipal revitalization relief can apply to the same project — and usually interact badly when layered in the wrong order. We work that arithmetic on our own holdings, and for a small number of developers, owners, and municipalities each year.
The work is available on a contracted basis, typically scoped to a single project or a municipal district. It draws on experience securing site control and structuring incentive stacks across a large number of land and development transactions.
How we structure a deal →

What we stack

Four programs, one basis
IRC 1400Z

Opportunity Zones

Deferral and basis step-up on gains rolled into qualified property.
IRC 47

Federal historic credit

Twenty percent of qualified rehabilitation, taken over five years.
State

State historic & preservation

Program-by-program, and rarely additive in the obvious way.
Municipal

Community revitalization relief

Local tax relief on the improved value of a rehabilitated building or district.

How an engagement runs

01 — 03

01

2–3 weeks

Feasibility opinion

Does the stack hold, and what is it worth to this project? A written answer in two to three weeks, fixed fee.

02

Per engagement

Structuring through close

Entity design, credit sequencing, application drafting, and coordination with counsel and lender to closing.

03

Retainer

Standing advisor

For owners and municipalities doing this repeatedly. A retained seat rather than a series of one-offs.

Fees are fixed and scoped at the outset. On a small number of deals each year we may take the structuring work as a co-general-partner position instead of a fee.

We learned this stack on our own holdings.

Bring us a project

Send the address, the acquisition basis, and your budget. We will tell you whether the stack is worth pursuing — and if it is not, we will say so.
info@spencerbrookcapital.com