Redwood City Before It Got Fancy: What Actually Happened in 1923
Most people think of Redwood City as just a pleasant suburb on the Peninsula with good weather and a nice downtown. That is because it is one now. But if you actually dig into the records from 1923, you will find something else entirely. Redwood City was experiencing what historians would later call its most intense boom period relative to its size, and the details are messier than any plaque would admit. Starting at the beginning is not wrong, but it is usually unnecessary if you know where the useful records live. The San Mateo County Clerk's office has the building permits going back to 1918, and the county assessor's maps for that era are surprisingly intact. The problem is they are not indexed properly. I spent about six months trying to cross-reference permit numbers with parcel IDs, and eventually found that many of the 1923 permits were filed under adjacent townships because the city boundaries were still being contested through 1925. The boom itself was not driven by one industry. That is the common misconception. Everyone assumes it was rail or oil. In reality, Redwood City's 1923 surge came from a combination of maritime manufacturing, early aviation supply contracts, and a local banking expansion that had very little to do with downtown.
The Manufacturing Piece Nobody Talks About
The Pacific Boat Company and several smaller shipfitting shops along the peninsula shore expanded their output dramatically in 1922 and carried that momentum through most of 1923. They were building auxiliary craft for naval contractors. The work was not glamorous, but it brought about four hundred direct jobs to a city that barely had twelve thousand residents at the time. This meant housing demand spiked in a very small geographic area, and property values in the area near the water shifted faster than most local histories record. I ran into this issue myself: when looking at census data, the numbers seem flat between 1920 and 1925. They are not. The census undercounted transient industrial workers and contracted laborers who lived in temporary housing near the yards. If you only look at official population figures, you will miss almost half of the actual boom activity. The workaround is checking utility connection records and cross-referencing them with payroll rolls from the major employers. That gives you a much clearer picture of who was actually there.
The Banking Side of Things
There was also a smaller, slower component that rarely gets mentioned: the restructuring of local credit. Two neighborhood banks merged operations in early 1923 and immediately expanded lending for residential and commercial construction. This was not some grand financial innovation. It was just the result of two smaller institutions realizing they could not compete with San Francisco lenders on their own. The effect was immediate and localized. Within nine months, new mortgage originations in San Mateo County rose by roughly sixty percent, concentrated heavily around Redwood City and the immediate surrounding areas. The main challenge is that records are scattered across different jurisdictions and many documents were destroyed or lost during seismic retrofits of the old county buildings. You will encounter missing pages, inconsistent date stamps, and permits filed under incorrect addresses. None of this is surprising, but it slows everything down considerably if you are not prepared for it. My approach has been to start with the property maps and work backward. The assessor's plat books from 1920 through 1925 show construction footprints clearly. From there, you can pull individual permits by parcel number rather than by street address, since addresses were still being standardized at the time. It takes more effort initially, but it saves hours later when you are trying to verify whether a specific lot was actually built in 1923 or whether the permit was pulled years later.
Get the Full Details
A Few Counter-Intuitive Points
The first thing beginners get wrong is assuming the boom ended cleanly. It did not. Several major projects started in 1923 continued well into the late twenties, partially because wartime and postwar contracts dragged on. Another mistake is treating the downtown area as the center of growth. The real construction density was along the waterfront and on the eastern edge near what is now Calaveras Avenue. Downtown stayed relatively quiet during that period. The third thing is overestimating the role of the railroad. The Southern Pacific station was important, but the rail line did not drive the 1923 boom. Transportation improvements happened later and supported a different phase of development. If you are mapping cause and effect, put the maritime and aviation supply chains first and the rail connections second.
Limitations You Should Know About
There are real gaps. Many payroll records from private companies were not preserved. Some building permits were never recorded in the surviving ledger volumes. The county history society has scanned portions of the 1920s material, but the digital collection is incomplete and not consistently searchable. If you need granular data on a specific block or company, you may have to visit the archives in person. Digitized sources alone will not carry you through. Another limitation is that some of the more dramatic claims about Redwood City's 1923 activity come from local newspapers that inflated growth figures for readership purposes. A front-page headline saying the city is booming does not mean it was booming everywhere. It usually means one sector temporarily accelerated. Distinguish between the promotional material and the actual transactional records whenever possible.
How to Actually Start Researching This Period
Begin with the San Mateo County Assessor's online parcel viewer. Filter for construction dates between 1920 and 1928. Pull a sample of ten to twenty properties and note which ones show activity in 1923 specifically. Then check the county clerk's permit database using those parcel numbers. Cross-check employment figures by looking for employer names in city directories and any surviving payroll records at the California State Archives in Sacramento. If you find a consistent pattern across multiple parcels and multiple sources, you have something reliable. Pay close attention to discrepancies between the assessed value before and after construction. That is often where the real story is, because it reveals whether the projects were completed on schedule and whether they added genuine value or just speculative square footage. The larger takeaway is that 1923 was a narrow window of intense but uneven growth, not a sustained golden era. Once the maritime contracts slowed and the banking merger settled into normal operations, the pace dropped significantly. The city recovered later under different conditions, but the 1923 boom itself was specific, localized, and shorter than most summaries suggest. That makes it harder to study, but also more interesting if you actually look at the primary documents instead of relying on secondary histories.
