Looking for a crawl space contractor in Alameda, CA? Describe your project once and up to five crawl space contractors who work in Alameda and Alameda County get back to you with a quote. It's free and there is no obligation.
Alameda is home to about 78,795 people (2024 Census Bureau estimate), a stable community (+0.7% since 2020). With 7,577 people per sq mi, it is a densely built-up area. Humid summers and homes built over vented crawl spaces make moisture problems common here.
Alameda at a glance
- Population (Census Bureau estimate, 2024)
- 78,795 (+0.7% since 2020)
- Rank in California
- 111th of 482 cities and towns
- Land area
- 10 sq mi
- Population density
- 7,577 people per sq mi (densely built-up)
- Type
- City (Alameda city)
- Main county
- Alameda County
What to check before hiring in Alameda
- Water first: standing water needs drainage before a vapor barrier.
- Wood damage: ask for a moisture reading and an assessment of joists and sills.
- Humidity control: check what dehumidifier or air supply is included and its maintenance.
- Price drivers: footprint, height, debris removal, drainage and repairs.
Useful official resources
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U.S. Department of Energy: Energy Saver
Official information and guidance.
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EPA: mold
Official information and guidance.
Services available in Alameda
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Crawl space encapsulation
Heavy vapor barrier on the floor and walls, sealed vents and a dehumidifier or conditioned air.
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Crawl space drainage and joist repair
Drainage, sump pump, joist or support repairs before or with encapsulation.
Frequently asked questions in Alameda
How much does crawl space encapsulation cost in Alameda, CA?
It depends on the size of the crawl space, its condition and the equipment. Describe it: contractors who serve Alameda reply with a quote.
How long does it take?
Often two to four days for a typical house.
Does it need maintenance?
Yes: the dehumidifier and any sump pump need regular checks.
Which crawl space contractors will contact me?
Up to five independent crawl space contractors who serve Alameda and the surrounding area, chosen for the service you need. Your details are shared only with your consent.
Source: U.S. Census Bureau, Population Estimates Program (Vintage 2024) and Gazetteer Files (public domain), imported on 10/31/2026. Figures describe the incorporated place or county as published; they are shown for information only.