Public Research

Donald T. Clark House, Lexington

The Donald T. Clark House at Six Moon Hill puts Massachusetts modernism into a very practical fight over time, neglect, and demolition pressure. Admiration for the design is not the problem; the problem is whether a vulnerable house can stay standing long enough for a better outcome to emerge before the local delay runs out.

Donald T. Clark House Six Moon Hill, Lexington, Massachusetts Precision: Approximate

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Quick Take

  • Modern houses often become endangered when age, neglect, and redevelopment pressure converge before consensus forms around their value.
  • The Clark House is especially revealing because Six Moon Hill is significant as a planned modern neighborhood, not just as a backdrop for individual demolition permits.
  • Article-scale coverage is especially revealing because demolition-delay battles can move quickly once a property has been allowed to decline.

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Why It Matters

The Clark House belongs in the active Massachusetts file because the demolition threat is live and time-bound. The house is not just theoretically vulnerable; it is moving through a documented delay window.

Modern residential preservation often succeeds or fails in short, local timeframes, especially when neglect has already weakened public confidence in whether a house is worth saving.

Public visibility matters here because it ties the individual demolition fight back to the larger architectural meaning of Six Moon Hill as a modern neighborhood landscape.

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Research Narrative

Why Modern Houses Reach Crisis Differently

The Clark House illustrates a preservation pattern older houses do not always share. Modern residences can be architecturally important yet still be dismissed as outdated, ordinary, or too compromised once maintenance falters. By the time their significance is broadly acknowledged, the legal path toward demolition may already be underway.

The 2025 endangered listing is especially revealing because it keeps the house in active public view during the period when delay, advocacy, and condition are all colliding.

What Six Moon Hill Adds to the Case

The house does not stand alone. It belongs to Six Moon Hill, one of the state's most important mid-century modern residential experiments. That district context makes the threat larger than one property dispute.

Once a house inside a neighborhood like this is lost, the damage is not only architectural. The district becomes easier to read as optional, fragmentary, or expendable rather than as a coherent design landscape.

Why the Delay Window Needs Documentation

Demolition-delay timelines can give the impression that preservation has already won time. In reality, they are often the narrow interval in which a better outcome must be assembled under pressure.

The Clark House remains a strong active case because the delay does not by itself solve neglect, ownership intent, or repair cost. It only marks how little time remains to change the result.

Public Actions

Campaign / Petition Record

Ordered oldest to newest.

January 10, 2025

Demolition Proposal

The Donald T. Clark House was formally presented to Lexington's Historical Commission for demolition review

That filing converted years of neglect into a time-sensitive public preservation fight.

January 17, 2025

Demolition Delay

Lexington's Historical Commission imposed a 21-month demolition delay after neighbors and preservation advocates argued the house could still be saved

The delay created breathing room, but it did not solve the underlying ownership, condition, or cost pressures.

November 2025

Preservation Advocacy

Preservation Massachusetts placed the Clark House on its Most Endangered list while the demolition-delay clock continued to run

The statewide listing tied the house's local deadline to a broader argument for protecting Six Moon Hill's modern landscape.

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Donald T. Clark House, Lexington, Massachusetts

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FAQ

Why is the Donald T. Clark House in an active batch?

Because Preservation Massachusetts identifies it as a current 2025 endangered resource facing a live demolition path and a demolition-delay deadline in October 2026.

What makes the house important?

It matters both as an individual modern house and as part of Six Moon Hill, one of Massachusetts's most significant modern residential neighborhoods.

What would show real progress next?

The key markers are whether a preservation solution emerges before the delay expires, whether neglect continues, and whether the demolition path remains active.

Sources

Source Trail

Preservation Massachusetts: Donald T. Clark House item sheet

document

Primary official source for the 2025 endangered designation and demolition-delay timeline.

Preservation Massachusetts Most Endangered Resource Program

organization

Program-level source for the statewide 2025 endangered list.

Place Snapshot

Place
Donald T. Clark House
Location
Six Moon Hill, Lexington, Massachusetts
Coverage
Approximate

Key Facts

Region
Lexington / Massachusetts / Northeast
Watchlist source
Preservation Massachusetts Most Endangered Historic Resources (2025)
Watchlist status
Current active watchlist entry
Category
modern house
Primary archive use
Public monitoring record for a demolition-delayed modern house inside the Six Moon Hill neighborhood

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