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The 8 Best Engineering Firms in San Francisco (2026)
This list ranks the top engineering firms in San Francisco using a Bayesian-style score built from Google ratings and review counts, updated for 2026. We prioritize firms that combine high average ratings with enough reviews to be meaningful, so smaller but flawless scores are balanced against broader customer feedback. In a city where seismic considerations, older housing stock, and dense zoning shape most projects, engineers play a practical role across permits, retrofits, and new work. These profiles focus on verified Google data to help readers quickly compare reputation and local presence before contacting firms.
This ranking is computed from Google reviews (our method). Listings marked Partner are paid advertising spots: they sit alongside the ranking without changing its order.
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City Structural, Inc.
City Structural, Inc. comes out on top because it holds a perfect 5.0 Google rating alongside 24 reviews, giving it strong standing in both quality and review volume. Listed as a structural engineer and located on Haight Street, its score benefits from a combination of flawless average ratings and a nontrivial number of reviewers. That balance is what pushes it to our number-one spot in the Bayesian-style ranking used here.
The full ranking
A.J.O. Group Build
A.J.O. Group Build holds a 4.9 rating from 27 reviews and appears as a General contractor; the listing gives a Sumner Street address in San Francisco.
27 reviews
ECR Engineering
ECR Engineering shows a perfect 5.0 average across 12 reviews and is categorized as a Structural engineer, with an address on Union Street in San Francisco.
12 reviews
SF Bay Engineering
With a 4.6 rating from 37 reviews, SF Bay Engineering is listed as a Structural engineer and has a Marin Street address in San Francisco.
37 reviews
Arup
Arup is rated 4.6 based on 10 reviews and appears under Engineering consultant; its listed location is on Mission Street in downtown San Francisco.
10 reviews
Nabi Construction & Engineering
Nabi Construction & Engineering carries a 4.3 rating from 12 reviews, categorized simply as Engineer, and shows a Division Street address in San Francisco.
12 reviews
Design Everest: Engineering and Architecture Services
Design Everest appears as an Engineer with a 4.4 rating from 47 reviews; no street address is shown on the Google listing included in this ranking.
47 reviews
Res Engineers Inc
Res Engineers Inc has a 4.0 rating based on 12 reviews, is labeled Engineer, and is listed at a Missouri Street address in San Francisco.
12 reviews
Frequently asked questions
How should I choose an engineering firm for my San Francisco project?
Start by matching the firm’s documented expertise to your project type (structural retrofit, new construction, permitting, etc.). Check their Google reviews and look for consistent feedback about communication and meeting local code requirements, then ask for references and examples of similar local work before hiring.
What can I expect an engineering firm to do during a typical engagement?
An engineering firm usually evaluates the site or structure, produces calculations and drawings, and can assist with permit submissions and inspections. The exact scope varies by project, so get a written proposal that lists deliverables, timelines, and responsibilities up front.
What should I check before signing a contract with an engineering firm?
Verify the firm’s licensure and insurance, confirm who will be the responsible licensed engineer, and review the scope, schedule, and payment terms carefully. Also clarify revision policies, third-party inspection needs, and how permit interactions or changes will be handled.
How was this ranking of engineering firms created?
The ranking is based on a Google-review-derived score that weights average ratings by review count (a Bayesian-style approach), updated for 2026. It uses publicly available Google ratings and review totals to balance high averages with the reliability that comes from more reviews.