Photo of David DeCoste
R Massachusetts House · District 5th Plymouth On the 2026 ballot

Rep. David DeCoste

Compare
Total votes
1,241
all sessions
Attendance
100%
3 missed
Higher than 77% of chamber peers
With party
93%
of cast votes
Lower than 83% of chamber peers
Bipartisan score
4%
crosses aisle rarely
Higher than 81% of chamber peers
Sponsored
1,569
bills & resolutions
Higher than 79% of chamber peers
Committees
5
assignments
1,569 bills and resolutions

Sponsored bills

Total
1,569
Primary
158
Co-sponsor
1,411
This page
1,569
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Co-sponsor H 2718
Passed · Massachusetts House · Co-sponsor
An Act relative to the labor participation in the POST commission

Maddy summaryThis bill amends the composition of the POST Commission (Peace Officer Standards and Training) by requiring two of its members to be appointed from a list of six nominations provided by law enforcement labor organizations. It directly affects the selection process for the commission, which oversees training and standards for law enforcement officers in Massachusetts. The key change adds a specific appointment pathway for labor organization representatives, ensuring their input in commission membership. This is a procedural adjustment to the commission's structure, not a change to law enforcement policies.

Passed Mar 19, 2026 1 co-sponsor
Co-sponsor H 2717
Passed · Massachusetts House · Co-sponsor
An Act relative to membership on the POST commission

Maddy summaryThis bill amends the law governing the POST commission's membership to require one member to be appointed from a list of three candidates nominated by the Massachusetts Coalition of Police. It adds this requirement after the existing provision for a member appointed from the Massachusetts Bar Association. The change ensures the commission includes law enforcement representation through the Coalition of Police, which will submit the nomination list for the appointment. The bill does not alter the existing appointment process for the Bar Association member or other commission members.

Passed Mar 19, 2026 1 co-sponsor
Co-sponsor S 2720
Passed · Massachusetts Senate · Co-sponsor
An Act banning the retail sale of dogs, cats, and rabbits in pet shops

Senate November 19, 2025 -- The committee on Environment and Natural Resources, to whom was referred the petitions (accompanied by bill, Senate, No. 618) of Jason M. Lewis, Michael O. Moore, Michael D. Brady, James K. Hawkins and other members of the General Court for legislation to ban the retail sale of dogs, cats, rabbits, and guinea pigs in pet shops; (accompanied by bill, Senate, No. 650) of Patrick M. O'Connor, Michael O. Moore, Michael D. Brady, James K. Hawkins and other members of the General Court for legislation banning the retail sale of dogs, cats, and rabbits in pet shops; and (accompanied by bill, Senate, No. 651) of Patrick M. O'Connor, Michael O. Moore, Marcus S. Vaughn, Michael D. Brady and other members of the General Court for legislation to ban the retail sale of dogs, cats, and rabbits in new pet shops, report the accompanying bill (Senate, No. 2720).

Passed Mar 19, 2026 1 co-sponsor
Co-sponsor H 918
Passed · Massachusetts House · Co-sponsor
An Act protecting drinking water and public health from sand mining pollution

Maddy summaryHD 2036 creates a 6-member advisory panel to investigate sand mining's impacts on public health and the environment. The panel includes experts in GIS, ecology, community advocacy, hydrology, and Indigenous environmental justice, appointed by state leaders and the Governor. It will study sand mining effects on drinking water, Environmental Justice communities, climate resilience, and air pollution (including silica exposure) over two years. The panel's findings will inform potential regulatory changes to mining licensing laws under Chapter 21B, Section 5, aimed at protecting water, health, and the environment.

Passed Mar 19, 2026 1 co-sponsor
Co-sponsor H 3148
Passed · Massachusetts House · Co-sponsor
An Act relative to rolling stock

Maddy summaryHD 2267 defines "rolling stock" in Massachusetts law as trucks, tractors, and trailers used by common carriers for interstate goods transport. The bill amends sections of the General Laws to insert this definition and add new provisions about the sales, storage, and use of such equipment. This is a technical definitional change affecting how existing tax and regulatory laws apply to commercial vehicles in interstate commerce. It does not create new taxes or regulations but clarifies terminology for current legal frameworks. The bill directly affects common carriers transporting goods across state lines using these vehicles.

Passed Mar 18, 2026 1 co-sponsor
Co-sponsor H 3095
Passed · Massachusetts House · Co-sponsor
An Act providing for an income tax exemption for senior citizens

Maddy summaryThis bill increases the income tax exemption for senior citizens in Massachusetts from $700 to $1,500. It directly affects senior citizens (typically defined as 65 or older under state law) by reducing the amount of their income subject to state income tax. The key provision amends the state tax code to raise the exemption amount, meaning seniors will pay tax on a higher portion of their income than before. This is a concrete change to the tax law, not a procedural or commemorative measure.

Passed Mar 16, 2026 1 co-sponsor
Primary H 3077
Passed · Massachusetts House · Lead sponsor
An Act to further the protection of agricultural land

Maddy summaryThis bill amends Massachusetts agricultural land protection law to explicitly include "the keeping of horses as a commercial enterprise" within the definition of protected agricultural land use. It directly affects commercial horse operations (like breeding or boarding businesses) by ensuring they qualify for the same land use protections previously applied to traditional farming activities. The key mechanism adds this specific phrase to two existing legal definitions in Chapter 64H, clarifying that horse-related commercial activities count as agricultural production under current law. This change does not create new programs or funding but adjusts the scope of existing protections.

Passed Mar 16, 2026 0 co-sponsors
Co-sponsor H 3145
Passed · Massachusetts House · Co-sponsor
An Act relative to the gradual elimination of the inventory tax

Maddy summaryThis bill gradually eliminates the inventory tax on business property in Massachusetts. It reduces the tax rate from $2.60 per $100 of inventory value to $0.50 over multiple steps, with final implementation by 2030. The key mechanism shifts the tax from a flat rate to a declining percentage of net income (starting at 9.5% for 2020-2021 and decreasing to 8.0% for 2022+). These changes directly affect businesses that pay the inventory tax, primarily commercial entities holding physical inventory. The phased approach spans from 2026 through 2030, with specific effective dates for each rate reduction step.

Passed Mar 16, 2026 1 co-sponsor
Co-sponsor H 3146
Passed · Massachusetts House · Co-sponsor
An Act requiring a waiting period for new taxes

Maddy summaryThis bill (HD 1327) requires a 3-month waiting period before any new tax can be collected after legislation creating that tax is passed. It directly affects all new taxes established by state law, including those proposed in bills or amendments. The key provision states that no new tax may be collected, assessed, or payable until 90 days after the bill creating it becomes law. This delays implementation but does not change tax rates or create new taxes. The bill applies to all new tax measures, not existing ones.

Passed Mar 16, 2026 1 co-sponsor
Co-sponsor S 2919
In committee · Massachusetts Senate · Co-sponsor
An Act addressing rising insurance costs for manufactured home residents

Senate, January 29, 2026 -- The committee on Financial Services to whom was referred the petition (accompanied by bill, Senate, No. 2738) (subject to Joint Rule 12) of Kelly A. Dooner, Norman J. Orrall, Bruce E. Tarr, Kelly W. Pease and other members of the General Court for legislation to address rising insurance costs for manufactured home residents, report the accompanying bill (Senate, No. 2919).

In committee Mar 12, 2026 1 co-sponsor
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