Yes — the floors in most 1920s Seattle bungalows can be refinished, and they’re usually worth saving: tight-grained old-growth fir and oak that no lumberyard sells anymore. The real questions are thickness (a century of sandings may have used up some of the wood), what’s hiding under the carpet or paint, and choosing a finish that doesn’t turn hundred-year-old fir orange. Here’s how we approach these houses, from Wallingford to Columbia City.
Seattle built thousands of Craftsman bungalows in the 1910s and ’20s — Wallingford, Ballard, Ravenna, Phinney Ridge, West Seattle, Columbia City — and a remarkable number still have their original floors. Some are hiding under 1970s carpet. Some are on their fourth coat of somebody’s weekend polyurethane. Some are proudly worn bare in the traffic paths. We’ve refinished floors in these houses for over a decade, and they’re our favorite calls: more problems per square foot than any new build, and a better floor waiting at the end of it.
This is the honest walkthrough of what’s under your feet in a 1920s bungalow, what a century does to a floor, and what refinishing one actually involves — including the one measurement that decides everything.
years old. Bungalow-era floors were milled from old-growth timber — growth rings packed far tighter than anything you can buy today, which is exactly why they’re worth saving.
Janka hardness of Douglas fir, the workhorse wood of Seattle bungalows — soft enough that a century of heels and chair legs leaves an honest record. Oak front rooms run 1290–1360.
days for a typical refinish, even in a century home. The extra work in old houses is repairs and hand-detailing, not extra weeks.
What’s Actually Under Your Feet
Bungalow builders used a two-tier system: the good wood went where guests would see it, and the affordable wood went everywhere else. In practice that usually means oak — often quarter-sawn, sometimes with a decorative border — in the living and dining rooms, and Douglas fir in bedrooms, hallways, and kitchens. Fir was the Northwest’s local lumber, milled a streetcar ride away, and it went down in wide, tight, vertical-grain boards that would cost a fortune to replicate now. Plenty of smaller bungalows are fir throughout; a few grander ones are all oak.
Telling them apart takes ten seconds once you know the trick: oak has visible pores and flecks in the grain, fir has smooth, straight, closely spaced grain lines like the pages of a closed book. Why it matters: the two woods sand differently, take finish differently, and — since fir is roughly half as hard as oak — live differently underfoot. We covered the fir side in depth in our guide to refinishing fir floors in old Seattle homes.
The Measurement That Decides Everything: Thickness
Every sanding removes wood — roughly a sixteenth of an inch with a full cut — and a bungalow floor may have been sanded two, three, or four times since Calvin Coolidge. Original tongue-and-groove flooring has only so much wood above the tongue, and when that’s gone, the floor is done: sand further and you expose the tongue, and boards start cracking and splintering. So the first thing we do in a century home isn’t aesthetic at all. We find a floor vent, a closet, or a radiator pipe cutout and look at the board in cross-section to see how much meat is left above the tongue.
Most bungalow floors pass this check with room to spare — people over-fear it. But not all, and it’s far better to know before the sander shows up. The full arithmetic of sandings-per-floor is in our post on how many times a wood floor can be sanded, and the honest list of disqualifiers is in when floors can’t be refinished. If your floor is on its last sanding, that’s not a reason to panic — it’s a reason to make this refinish count, with a commercial finish and a recoat-not-resand maintenance plan afterward.
What a Century Leaves Behind
Old floors carry their history, and a refinish has to deal with all of it. The usual inventory in a 1920s Seattle bungalow: face nails working up through the boards (set and filled), black water stains around radiator locations and old plant spots (sanded if shallow, chemically treated or patched if deep), pet stains from generations of pets, gaps between boards that open every winter, patches where walls moved or floor furnaces came out, and paint — always, somehow, paint — around the edges of every room that was ever carpeted.
Two honest expectations. First, gaps: we fill what filler can hold, but a century-old floor moves seasonally, and filler in wide gaps eventually cracks out — some gap is part of the house’s character, and pretending otherwise leads to disappointment. Second, stains: deep black staining goes through the wood, not just the finish, so the fix is board replacement, and matching hundred-year-old fir means salvaged material, not the lumberyard. We keep expectations and options clear at the estimate rather than discovering them together on day two.
The Usual Suspects in a Bungalow Floor
| What we find | What it means | The fix |
|---|---|---|
| Face nails standing proud | A century of seasonal movement | Set below the surface, fill, sand |
| Black rings and patches | Old water or pet damage in the wood itself | Sand if shallow; replace boards if deep |
| Gaps between boards | Wood shrinking over decades of dry winters | Fill the stable ones; accept the honest ones |
| Odd patches and borders | Walls moved, floor furnaces removed | Blend, or feature them — they’re history |
| Paint at the room edges | Painters who trusted the carpet | Comes off in the sanding, with hand work at edges |
| Wavy, cupped boards | A hundred years of humidity swings | Lägler TRIO final pass to bring it flat |
Bungalow Country: Where These Floors Live
The neighborhoods tell you what to expect before the front door opens. Wallingford and Ravenna bungalows tend to have kept their oak front rooms; Ballard’s smaller workers’ bungalows are more often fir throughout, and so are Phinney and Greenwood’s. West Seattle and Columbia City hold both, plus more of the grand-porch variants with borders and inlays worth featuring. What all of them share: decades of remodels layered on top, which is why no two of these jobs quote identically and why we look at every room instead of estimating from the sidewalk.
These houses are a big share of our hardwood floor refinishing work in Seattle, and the pricing is the same as any other refinish: $3.99/sq ft for a full sand with natural finish, $6.50 with stain, board repairs priced at the estimate. A typical bungalow main floor runs 600–1,000 sq ft — comfortably over our 500 sq ft minimum — and takes 3–5 days.
Choosing a Finish That Respects Old Wood
Here’s where century homes punish the default choice. Oil-modified poly — the amber finish most of these floors wore for decades — keeps yellowing for years, and on fir, which is already warm-toned, it lands somewhere between pumpkin and traffic cone. Most of the “can you fix what the last refinisher did” calls we get from bungalow owners are exactly this. We finish these floors with clear waterborne systems — Bona and Pallmann, 2–3 coats — which hold the wood’s real color: honey-and-rose fir, sandy quarter-sawn oak. The full argument lives in our water-based vs oil-based comparison.
On stain: oak takes it well, so if you want a darker floor in the front rooms, that’s open. Fir mostly doesn’t — it absorbs stain unevenly and blotches, and its beauty is the grain itself. Our standing advice in a bungalow is natural on the fir, natural or a considered stain on the oak, satin or matte sheen, and let a hundred years of tight grain do the decorating.
Is Your Floor a Candidate?
Great refinish candidates…
- Boards solid underfoot, wear mostly in the finish and color
- Thickness check shows wood left above the tongue
- Stains and damage are localized, not wall-to-wall
- Original oak or vertical-grain fir — wood you can’t buy new
- You want the house’s character kept, not covered
Time for a harder conversation…
- Tongue already exposed from past sandings, boards cracking
- Spongy or springy spots — that’s structure, not surface
- Deep pet or water staining across whole rooms
- Previous refinishes gouged or rippled the floor badly
- You want a perfectly uniform, new-build look — old floors won’t fake it
Refinishing Century-Home Floors: What Seattle Owners Ask
Can 100-year-old floors really be refinished?
How do I know if my bungalow floors are fir or oak?
What does it cost to refinish floors in a 1920s Seattle home?
Can you get the black stains out?
Should we fill the gaps between boards?
Can fir floors be stained darker like oak?
How long does the work take, and can we stay in the house?
Is it worth refinishing instead of replacing with new hardwood?
Have a Bungalow? We Speak Its Language
We’ll check your floor’s thickness, identify the woods, and give you a written price that separates the refinish from the repairs. Free in-home estimates across Seattle, King & Snohomish County.
Related reading: Refinishing fir floors in old Seattle homes · How many times can a floor be sanded · Water-based vs oil-based finish · Hardwood floor refinishing in Seattle · Book a free estimate
