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  • Average homeowner rating star icon4.3
    Average homeowner rating
  • Verified reviews icon88
    Verified deck repair services reviews

Top-Rated Deck repair pros in Castro Valley - Updated Nov 2026

Avatar for Cal Preserving
Cal Preserving
4.7(
177
)
Deck or Porch - Repair - For Business

Serving Castro Valley, CA and surrounding areas

Approved

In business since 1987

Free estimates

Emergency services offered

"CalPreserving was the total deal! I didn't know what all we needed and all the serves Iooked at seemed to offer only a piece of the puzzle, such as just power washing, or construction, or staining. This group did it all. The initial visit to assess the issues was informative and helpful. We could see our choices. They offered sound advice and looked at ways to save us money where it was possible. We ended up replacing about half the boards on the oldest deck. The finished product on both decks looks amazing -- like new. The workmen were thoughtful, knowledgeable, hard working, and polite. I was impressed that they even followed up with tips on maintaining the decks for years to come. I will definitely have them back every couple of years just to check on the decks and preserve the investments we have made in them. My highest recommendation."
Additional Photos
Additional Photos
Additional Photos
Before
After

+13

12 neighbors recently requested a quote
Recommended by92%of homeowners
Avatar for Bayside Builders Group
Bayside Builders Group
4.8(
68
)
Deck or Porch - Repair

Serving Castro Valley, CA and surrounding areas

Approved

In business since 2021

Free estimates

Warranties offered

"Super happy with our new deck from Bayside Builders Group. From the initial quote down to the final inspection, everything was handled professionally. The builders were fast, respectful of our property, and clearly knew what they were doing. The finished deck looks amazing and feels built to last. Worth every penny."
Deck Installation
9
12
Roofing and Gutter Instal
Castro Valley project

+154

Response time2 days
Response rate86%
Recommended by65%of homeowners
Avatar for Syntech Roofing and Waterproofing
Syntech Roofing and Waterproofing
5.0(
10
)
Deck or Porch - Repair - For Business

Serving Castro Valley, CA and surrounding areas

Approved

In business since 2019

Free estimates

Emergency services offered

"Rocky and his team Carlos, Duan and Rubin are extremely professional, responsive and efficient. The waterproofing in my upper deck and garage floor coating are done in high quality of workmanship and careful manner. I really appreciate their positive and helpful work attitude. I highly recommend them to any home owner."
Completed Projects
Completed Projects
Completed Projects
Completed Projects
Completed Projects

+31

Response time1 day
6 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Zavala Construction
Zavala Construction
3.9(
122
)
Deck or Porch - Repair

Serving Castro Valley, CA and surrounding areas

Approved

In business since 2009

Warranties offered

Small jobs welcome

"Josè did an excellent job installing our patio screens. He was very communicative about the process and asked for my approval before making any necessary changes. I really appreciated Josè’s thoroughness from beginning to end of the project."
Deck addition
Garage addition
House painting
House painting
House painting

+25

Response time6 hrs
4 neighbors recently requested a quote
Recommended by80%of homeowners
Avatar for ARISTA EXTERIORS
ARISTA EXTERIORS
5.0(
9
)
Deck or Porch - RepairDeck or Porch - Repair - For Business

Serving Castro Valley, CA and surrounding areas

Approved

Free estimates

Warranties offered

Offers commercial services

"We had them do a full house siding project and it turned out great. The crew worked hard every day, kept things clean, and always let us know what was going on. You can tell they care about doing it right, not just rushing through it. The house looks completely different now and we?ve already had neighbors compliment it. Glad we went with them."
Before
Full Siding Replacement
Full Siding Replacement
Full Siding Replacement
Full Siding Replacement

+48

100 neighbors recently requested a quote
Avatar for Plumbing 1 Builder's Inc
Plumbing 1 Builder's Inc
5.0(
17
)
Deck or Porch - Repair

Serving Castro Valley, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2011

Free estimates

Warranties offered

"Leo did a very extensive plumbing repair that required digging through my bathroom floor and replacing a huge pipe to the outside. He also prepared and installed piping and fixtures for a bathroom remodel. Always showed up when he said he would and had a great crew. Cleaned up as well. Would highly recommend."
Response time3 hrs
Response rate85%
58 neighbors recently requested a quote
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Deck Repair FAQs, answered by experts

When deciding if you should use 2x6 or 2x8 deck joists, consider the size of the deck, joist spacing, and materials. Larger decks, larger-spaced joists, and weaker wood all require more support, meaning they need larger joists. For example, 2x8 redwood joists spaced 16 inches apart can only safely span up to 10 feet and 7 inches. On the other hand, 2x10 southern pine joists spaced 12 inches apart can be as big as 16 feet and 2 inches. If you aren’t sure what size joist is best for your project, speak with your deck builder.

For a 12x20-foot (240-square-foot) deck, you can expect to pay between $7,200 and $14,400. This cost is based on a general price of $30 to $60 per square foot. The final price will depend on factors such as the decking material, design complexity, deck type, location, and local labor costs. Keep in mind that add-ons will increase the total; for example, adding an under-deck drainage system to a deck of this size could cost an additional $7,700.

The time to build a vinyl deck varies based on factors like size, the complexity of the design, and weather conditions. Generally, a straightforward project might take a few days to a couple of weeks for preparation, installation, and any necessary inspections. However, larger or more intricate designs may extend the timeline. Timely acquisition of permits, efficient planning, and coordination with contractors will all help to make the construction process as smooth and quick as possible.

The cost to repair a deck is between $900 and $3,500, depending on the cause and extent of the damage. For example, fixing a sinking deck caused by pest damage can cost between $200 and $600, while replacing sinking boards costs between $500 and $4,000.

Rot loves moisture, so deck rot typically impacts the parts of a board that stay wet. This includes the underside of boards, in addition to support posts and joists. However, any part of a board can rot, given the right conditions. 

The Castro Valley, CA homeowners’ guide to deck repair services

From average costs to expert advice, get all the answers you need to get your job done.