California's Largest Independent Floor Plan Database for Mid-Century Modern Homeowners
The Eichler Vault Archive stands as California's largest community-driven repository of original floor plans, neighborhood tract plot maps, and archival preservation research — built entirely by homeowners for homeowners.
Eichler VaultKevin Limprecht··7 min read
For mid-century modern enthusiasts, post-and-beam purists, and new homeowners, access to authentic structural blueprints isn't just nice to have — it's essential. The Eichler Vault Archive stands as California's largest community-driven repository of original floor plans, neighborhood tract plot maps, and archival preservation research, built entirely by homeowners for homeowners.
Instead of navigating fragmented municipal record offices or institutional physical archives, the registry offers an open, high-resolution database designed to serve the immediate needs of buyers, restorers, and preservationists across Northern and Southern California.
A Comprehensive Multi-Architect Archive
The archive synthesizes original schematics, sales brochures, and municipal filings across all primary model series and prominent California mid-century modern architects:
Claude Oakland Series: Complete catalog featuring all 15 original plan sets, including iconic high-gable and central atrium layouts.
Jones & Emmons Series: All 17 original plan sets, documenting versatile courtyard designs and post-and-beam structural elevations.
Anshen & Allen Series: All 8 primary plan sets, highlighting early mid-century layouts and soaring glass transom details.
Tract Plot Plans: 34 comprehensive California neighborhood tract maps covering core developments across Silicon Valley, the South Bay, the Peninsula, East Bay, Marin County, and Southern California (including Balboa Highlands and Orange).
Expanded Mid-Century Modern Builders: Architectural records extending to contemporary peers, including Mackay Homes courtyard series, Cliff May ranch house schematics, Carter Sparks designs for Streng Bros., and Palmer & Krisel Paradise Palms documents.
Upper Lucas Valley, San Rafael — A Marin Benchmark
Among the most significant tracts in the Marin County Eichler inventory, Upper Lucas Valley in San Rafael represents the outer edge of Joseph Eichler's Northern California expansion — a hillside development where the post-and-beam vocabulary met the rolling terrain of Marin in a way that produced some of the most architecturally distinctive homes in the entire Eichler catalog.
Developed in the early 1960s as part of Eichler's sustained push into Marin County, Upper Lucas Valley sits above the lower Marinwood and Lucas Valley tracts, occupying a more elevated and topographically complex site. The grading plan for Lucas Valley Unit 8 — drawn by George S. Nolte Consulting Civil Engineers and plotted by Claude Oakland — reveals the engineering ambition behind the development. Streets including Idleberry Road, Mt. Darwin Court, and Mt. Susitna Court were carved into the hillside to accommodate the characteristic Eichler footprint: a single-story, flat or low-slope roof structure with an open atrium core, oriented to maximize natural light and indoor-outdoor connection.
The Claude Oakland plot plan for Unit 8 documents 36 homes across the tract, with house counts broken down by model variant — a level of original documentation that is exceptionally rare for a Marin hillside development of this era. The plan shows lot-by-lot model assignments, retaining wall locations, variable slope conditions, and driveway center-point callouts, providing a complete engineering and architectural record of how the tract was actually built.
What makes Upper Lucas Valley particularly compelling for buyers and preservationists is the combination of setting and scarcity. These homes occupy a landscape that was never replicated in the Eichler program — the hillside orientation, the mountain street names, the views across the valley — and the inventory is small enough that individual homes rarely come to market. When they do, buyers with access to original tract documentation and model-specific floor plans are in a fundamentally different position than those working from memory or general knowledge.
The Eichler Vault Archive holds the original grading plan for Lucas Valley Unit 8, now available to registered members and researchers as part of the Marin County neighborhood plans collection.
Lucas Valley Unit 8 Grading Plan. Plot plan by Claude Oakland, Architect. Engineering by George S. Nolte Consulting Civil Engineers. San Rafael, Marin County, California.
Terra Linda — The Jones & Emmons Marin Tract
Directly adjacent to the Lucas Valley corridor, Terra Linda in San Rafael represents the Jones & Emmons contribution to Marin County's Eichler inventory. The original Eichler Homes Terra Linda Plot Plan — drawn by A. Quincy Jones and Frederick E. Emmons, Architects — documents the full tract layout along Penny Royal Lane and Pine Lane, with a total house count of 75 units across two model types.
The Terra Linda plot plan is one of the clearest surviving examples of the Jones & Emmons approach to tract planning: curved street geometry, consistent setbacks, and a model distribution that balanced variety with production efficiency. The plan's house count table — 18 units of one model type, 62 of another — reflects the commercial logic of postwar tract development while the architectural language remained firmly within the Eichler program's commitment to modernist residential design.
Unlisted Eichler Alerts & Early Intent Intelligence
Off-Market Seller Signals. Quiet Listings. Unlisted Archive Records.
A significant portion of pristine Eichler properties trade through private transfers or whisper networks before reaching the public MLS. Secure early access to off-market seller signals, quiet listing updates, and unlisted archive records across California's premier Eichler tracts before they go public.
Eichler Homes Terra Linda Plot Plan. A. Quincy Jones · Frederick E. Emmons, Architects. Marin County, California.
Practical Utility for Restorations and Spatial Layouts
Every record in the Eichler Vault Archive addresses real-world ownership and restoration priorities. Homeowners can directly reference original schematics to:
- Identify non-load-bearing interior walls before any renovation work begins
- Verify original open-air central atrium boundaries and structural post locations
- Trace historical copper and steel radiant heating floor loops
- Locate original Lauan mahogany paneling specs or built-in cabinetry layouts
- Confirm original model variant and compare against subsequent modifications
The Carter Sparks Plan 1631 — a 1,456 sq ft, three-bedroom layout with a 460 sq ft garage — illustrates the level of dimensional specificity available in the archive. Room-by-room measurements, utility placement, entry sequence, and garage orientation are all documented at a scale that supports direct field verification.
Carter Sparks Plan 1631. 1,456 sq ft house area, 460 sq ft garage. Streng Bros. California.
The Mackay Homes "Bel Aire" California Courtyard plan — with its six outdoor accesses, enclosed patio core, and direct bath-to-exterior connections — demonstrates how the archive captures not just floor geometry but the design philosophy behind each builder's approach to California indoor-outdoor living.
Mackay Homes "The Bel Aire." California Courtyard plan — an enclosed patio area that serves as your outdoor living room. Six outdoor accesses.
The Cliff May Model RM 3215 — 1,675 square feet with a 59-foot frontage, three bedrooms, and the signature rambling profile of the California Ranch — represents the archive's reach beyond the Eichler program into the broader mid-century California residential canon.
Cliff May Model RM 3215. 1,675 square feet. Exclusive Sales Agents: Burns DC Realty & Trust Co.
Freshly sourced blueprints and rare neighborhood tract maps are cataloged weekly, providing immediate, verified access to document contributors and registry members.
Connecting Buyers and Preservationists
Beyond physical documentation, the archive integrates directly with the Eichler Buyers Collective — a dedicated, research-driven acquisition network. By linking architectural lineage, tract history, and original blueprint data with a curated network of buyers and owners, the collective helps preservation-minded enthusiasts discover, evaluate, and acquire authentic mid-century modern homes off-market or before they reach broad listing channels.
Whether you are auditing structural post-and-beam framing, mapping out an authentic radiant heat restoration, or searching for a specific model variant, the Eichler Vault Archive and Eichler Buyers Collective form the ultimate decentralized resource for California's modernism community.
Written by
Kevin Limprecht
Founder, Eichler Vault
[email protected] · California DRE 02233783 · Real Broker, LLC
