Montgomery County · Upper Gwynedd · MCPC #26-0160-001
Merck B71 Manufacturing Facility
770 Sumneytown Pike, Upper Gwynedd, PA · 74,920 sq ft non-residential, industrial · 2.3 acres
About this project
Merck is constructing a 74,920 square-foot, two-story vaccine manufacturing facility in the southwest quadrant of its West Point campus in Upper Gwynedd Township. The building will house measles and mumps vaccine production, consolidating operations currently performed in other campus facilities. Stormwater will be managed through a new rain garden draining to an existing detention basin.
County planning commission: Supports, with comments
Issues raised: Parking calculation not detailed on plan, Landscape conservation plan needed, Zoning district notation clarification required, Operations and maintenance guarantee waiver justification uncertain, Pervious surface coverage should be increased
- Applicant
- Merck Sharp & Dohme LLC
- Engineer / rep.
- Pennoni Engineering
- Zoning
- LI
- Approvals needed
- preliminary and final plan review combined, utility/infrastructure within 100 feet of property line, performance and maintenance guarantee, stormwater conveyance pipes, operations and maintenance agreements, parking lot open space
- Utilities
- public water, public sewer
Filing history
- 2026-06-09 · MCPC #26-0160-001 · Land Dev Plan, Prelim Plan · 74,920 sq ft
County review letters
2026-06-09 · UGWYN 26-0160-001r.pdf
The full picture AI research
Merck plans a two-story vaccine manufacturing building, about 74,920 square feet, on roughly 2.3 acres in the southwest part of its large West Point campus at 770 Sumneytown Pike. County records say it will make measles and mumps vaccines. That work is now done in other buildings on the campus, so the new building consolidates it.
The site is already part of an industrial pharmaceutical campus, so the project adds a building to existing operations and does not change the land's use. Rainwater will drain to a new rain garden and then to a detention basin already on the campus.
An Upper Gwynedd Township agenda for August 10, 2026 lists the project as a proposed land development. A secondary news summary says the township commissioners unanimously approved plans for a Merck "Building 71" vaccine plant. That summary gives a smaller floor-area figure and no date, so it may use a different measure.
What it could mean nearby
- Stormwater is handled on site by a new rain garden draining to an existing detention basin, which limits runoff to neighboring properties.
- The building sits inside an existing industrial campus, so no new neighborhood or change of land use is indicated.
- The records do not give traffic, job-count or utility figures for this building.
Where it stands
County records show a filing on 2026-06-09, and the township listed the land-development plan on an August 2026 agenda. A secondary report says it was approved. Typical next steps are final conditions, permits, and then construction.
- Aug 10, 2026 Upper Gwynedd Township agenda lists the Merck Building 71 land development
- Jun 9, 2026 Latest county planning filing
Want to weigh in? The Upper Gwynedd Township Board of Commissioners reviews land development plans at public meetings, and residents can comment there or by contacting the township.
Who's behind it
Merck Sharp & Dohme LLC · Merck is a global pharmaceutical and vaccine company, and its West Point campus is a major U.S. vaccine manufacturing site.
Around the web
- Upper Gwynedd Township agenda, August 10, 2026Upper Gwynedd Township · Aug 10, 2026Lists 770 Sumneytown Pike, Merck Building 71 Facility, as a proposed land development for a new manufacturing facility.
- Merck opens $500M Advance bioanalytical facility at West Point campusMedPathMentions that township commissioners unanimously approved plans for Building 71, a two-story vaccine plant, and confirms the campus address.
Planning terms explained
- Land development
- The township's formal review of a plan to build or enlarge a building and its site improvements.
- Detention basin
- A low area that temporarily holds stormwater and releases it slowly to prevent flooding.
- Rain garden
- A planted depression that soaks up runoff from roofs and pavement.
- Board of Commissioners
- The elected body that governs Upper Gwynedd Township and votes on development plans.
Researched by AI from public sources on Nov 1, 2026. It can make mistakes, so check the linked sources and the municipality before relying on it.
Scope estimate for contractors
Estimated construction value: $9.7M
- ~374 roofing squares (assumes 2 stories)
- ~187 tons of cooling (rule of thumb 400 sq ft/ton)
- ~2.3 acres of site work (grading, stormwater, landscaping)
- Rain garden and detention basin stormwater connections
- 500 KVA emergency generator with noise enclosure
- Five roof-mounted air handlers with noise screening
- Insulated metal panel exterior cladding
- Native Pennsylvania plant landscaping