How BERDO, BEUDO and the energy code change a condo reserve plan

A reserve study has always been a forecast of replacements: this roof in eight years, that boiler in twelve, the elevator in twenty. In Boston and Cambridge, and in the growing list of towns on the state’s specialized energy code, the question is shifting from when something will be replaced to what it will have to be replaced with. That changes the price, and so the contribution.

Boston: BERDO

Boston’s Building Emissions Reduction and Disclosure Ordinance applies to residential buildings with 15 or more units, to non-residential buildings of 20,000 square feet or more, and to tax parcels whose buildings add up to either threshold. The city says buildings begin complying with emissions standards in 2025 or 2030, depending on size, and that all are expected to reach net-zero emissions by 2050.

For a condominium, BERDO is about the energy the building uses as a whole. Common systems such as central boilers, domestic hot water plants and corridor ventilation are the association’s to plan for. The exact standard, reporting duties and compliance options are on the city’s BERDO pages, and they are worth reading with the building’s energy data in front of you.

Cambridge: BEUDO

Cambridge’s Building Energy Use Disclosure Ordinance requires residential properties with 50 or more units to report energy use to the city. Amendments adopted in 2023 set net zero emissions targets, with 2035 for non-residential buildings of 100,000 square feet or more and 2050 for most other covered buildings. Check the city’s page for how your building is classed and what applies to it.

The specialized energy code

The state publishes a list of municipalities that have adopted the specialized opt-in energy code. As of October 27, 2026, Mass.gov lists 61 of them, including Boston, Cambridge, Somerville, Newton and Worcester, and on the Cape, Truro, Wellfleet and Eastham. The code mainly governs new construction and major renovations rather than routine replacement, so its effect on a reserve plan depends on how big a project is. Ask the firm preparing your study, and your building official, whether any planned work could count as a major renovation.

Why this belongs in a reserve study

Chapter 183A, section 10(i) asks every condominium for an adequate replacement reserve. Adequate means enough for the work the building will actually need. If the realistic replacement for a gas boiler in 2032 is a heat pump system with new distribution, pricing a like-for-like boiler understates the bill.

A study that ignores the ordinances is not wrong about the boiler’s age. It is wrong about the bill.

What to ask the firm

When you request a reserve study or update for a building covered by BERDO or BEUDO, or in a specialized code town, ask for:

1. Two prices for heating and hot water. The like-for-like replacement and a lower-emission alternative, each with its likely timing. The board can then see the gap and decide how to fund it.
2. Envelope items timed with systems. Windows, roof insulation and air sealing can reduce the size, and so the cost, of new heating plant. A study that lines them up gives the board a sequence, not just a list.
3. A note on major renovation. Where a planned project may be large enough to bring in stricter code requirements, the study should say so, even if it cannot price every consequence.
4. Assumptions in writing. Fuel, equipment prices and incentives move. A study that states its assumptions can be updated cleanly next time.

Funding the gap

Higher replacement costs do not have to mean a special assessment. A board has several tools:

• Raise the contribution early. Small increases spread over ten years are easier on owners than a large bill.
• Phase the work. Envelope first, then systems, can keep each year’s spend manageable.
• Look at outside money. State and utility programs change often; a manager or energy consultant can say what applies.
• Borrow deliberately. Some associations finance large projects; the reserve plan should show how repayments fit.

Remember the lender side too. Fannie Mae’s project standards look at the share of the budget going to reserves. An association that funds an electrification plan through reserves is also strengthening the number buyers’ lenders check.

Smaller buildings

Associations under BERDO’s and BEUDO’s thresholds are not covered by those ordinances, but they still live with the same equipment market and, in specialized code towns, the same rules for big renovations. A three-unit Somerville house replacing its boiler faces many of the same choices on a smaller scale.

The bottom line

City ordinances and the energy code are not reserve laws, but they change the most expensive lines in many reserve studies. If your study predates them, it is probably understating what heating, hot water and envelope work will cost. To have a study or update priced with these questions in mind, get a quote.