Office parks · Massachusetts

Bay Colony

Imported, unreviewedRedevelopedRetrofit proposedWaltham, MA

Approved office-to-housing transition (BXP, 1,200 units) with RCI zoning, amid 8 nearby redevelopments in Waltham. · summary, model-written

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Site profile9 elements · what this retrofit is built with · tap a chip for the evidence

Finance and pipeline

Retrofit in the pipeline

This site: …proposed newtypes-extraction · all sites with this

Place

3+ other atlas sites within 10 km

This site: 8 within 10 km computed · all sites with this

County lost 10%+ of retail establishments since 2012

This site: -10% census-cbp · all sites with this

County permitting 2,000+ apartment units a year

This site: 2,440 units, Middlesex County census-bps · all sites with this

County typical rent $2,000+

This site: $3,069/mo zillow · all sites with this

Policy tool

Rezoning

This site: RCI overlay district newtypes-extraction · all sites with this

Strategy

Redeveloped

This site: …about 1,200 of those units by its owner BXP record · all sites with this

New use

Housing

This site: …new_use field newtypes-extraction · all sites with this

Mixed use

This site: …new_use field newtypes-extraction · all sites with this

All elements and lists · Trends

Now

Status	Retrofit proposednewtypes-extraction
Strategy	Redevelopment, proposedWikipedia
New uses	housing, mixedWikipedia
What is there now	about 1,200 of those units by its owner BXPnewtypes-extraction

Planning

Zoning change	RCI overlay districtnewtypes-extraction
Entitlement year	2026Wikipedia
Planning notes	Approved by Waltham's City Council.Wikipedia

Site context

Housing permits, Middlesex County (MA), 2024	2,440 units in 5+ unit buildings, 166 in 2–4, 889 single-family; 2023: 2,902 in 5+Census BPS
Other atlas sites nearby	8 within 10 km, 27 within 25 km: Bay Colony office complex (0.0 km); Jones Road (0.0 km); Former Polaroid campus (2.2 km); Arsenal Mall (6.5 km); Cambridge Discovery Park (7.6 km)computed
Retail trade in the county, 2012 to 2023	4,650 establishments (-10%); 79,115 jobs (-5%)Census CBP
Housing market in the county	typical home value $804,837 (+2% 1 yr, +22% 5 yr); typical rent $3,069/mo (+2% 1 yr), 2026-09Zillow Research
Traffic on the busiest road within 600 m (2024)	24,558 vehicles a day (principal arterial, 2 lanes); 1,326 trucks; 20 counted segmentsFHWA HPMS

Summary, model-written

Bay Colony (Waltham, MA) is a proposed redeveloped office campus (original use) seeking housing/mixed use. Approved by Waltham City Council in 2026 with RCI zoning overlay (entitlement year 2026). Owner BXP plans ~1,200 units.

Why. Zoning approved, retail decline noted (2012-2023: -10.5% stores, -4.7% jobs), housing market strong (ZORI $3,069/mo, 2026). 8 nearby projects within 10km redeveloping office space (e.g., Polaroid campus 2km away). Permits show 2,440 units planned for 2024 construction.

Where it stands. Status: proposed. Entitlements secured (2026 zoning change). Construction not yet started (permits for 2024 units pending).

For a planner

Retail decline context (2012-2023) aligns with housing transition.
Traffic: principal arterial (24,558 ADT) supports development.

For a developer

BXP owns project (1,200 units).
ZORI $3,069/mo indicates market demand.
8 similar projects within 10km (all redeveloping office).

What we do not know yet

No construction timeline beyond 2024 permits.
No unit mix details (affordable/market-rate).
No site size or parcel boundaries provided.

Generated by qwen3-30b-a3b-64k:latest on Dell 5820 RTX 3090 (Ollama, qwen3-30b-a3b) from the fields, parcels, deals and context layers on this page, with no outside knowledge. It is regenerated when the record changes and has not been checked by a person. How it is made.

Similar sites

Bay Colony office complex, Waltham, MA · Office parks · same strategy: redevelop; also in MA; 0 km away
City Realty development on Route 9, Chestnut Hill, MA · Office parks · same strategy: redevelop; also in MA; 8 km away
Elmwood Park, Hopkinton, MA · Office parks · same strategy: redevelop; also in MA; 28 km away
Wells Avenue Park, Newton, MA · Office parks · same strategy: redevelop; also in MA; 10 km away

Elsewhere on the web

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Multifamily screen

already in play: under construction, approved, or sold to a developer with housing plans
median rent $2,126
housing in the record

Inputs: record fields (size, status) and county Census ACS 2018–2023 figures (growth, rent). How the points work. Not a recommendation.

History and original facts

County	Middlesex County
Census division	1 · New England
Notes	Draft from thephrg.com, model-extracted, unreviewed: Bay Colony, a 135-acre office campus in Waltham, is proposed for redevelopment into housing and mixed-use with up to 1,200 units.

Not yet recorded: acres, GLA, year opened, original developer, retrofit year. Know it? Tell us.

Timeline

2026 Waltham's City Council voted 12 to 1 to override Mayor Jeannette McCarthy's veto, and the rezoning of Waltham's three biggest office park properties for…

Sources

Waltham Office Park Housing - Bay Colony Rezoning 2026
2 quoted sentences
Bay Colony
On the night of August 3, 2026, Waltham's City Council voted 12 to 1 to override Mayor Jeannette McCarthy's veto, and the rezoning of Waltham's three biggest office park properties for housing became law.

Cite

Retrofit Atlas (2026). "Bay Colony, Waltham, MA." Record n-82ffacb575, imported, unreviewed. Built on the public Retrofitting Suburbia map (Dunham-Jones and Williamson) and the sources listed. https://retrofitatlas.org/office-parks/ma/waltham-bay-colony/ (accessed 2026-10-20).