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Design 1200 sq ft ADU in Dan Jose back yard

Architectural Services

  • Design 1200 sq ft ADU in Dan Jose back yard

    Architectural Services

Cecilia home
Cecilia home

Cecilia home

Top Pro

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Introduction: profesional engineer provide structural service and on load bearing wall, new construction, remodel and foundation.

Current Top Pro

Hired 80 times

2 similar jobs done near you

Background checked

License verified

5 employees

2 years in business

Payment methods

Apple Pay, Check, Credit card, PayPal, Venmo, Zelle

Currently a top pro

Top Pros are among the highest-rated, most popular professionals on Thumbtack.

Jan - Jun

This pro indicated that they reviewed CDC safety guidelines for COVID-19 and pledged to do the following:

Maintain 6 feet of distance from customers

Wear masks during the job

Wear gloves during the job

Disinfect surfaces touched during the job


Customers rated this pro highly for professionalism, responsiveness, and work quality.

Excellent 4.9

57 reviews


Read reviews that mention:

Sam H.

Architectural Services

Mason helped me understand my options for doing a remodeling (Bathroom and a room) over a call. He was very patient in spelling things out and very clear on the fees. No pressure whatsoever. I appreciate Mason's honesty and going beyond to make suggestion on handling this after he is done with he is done with the architecture and structural design. Mason left me with the info to think through and make a decision. Thank you.
Apr 13, 2021
Minh N.

Structural Engineering Services

Mason is very professional and knowledgeable. He explained the issue clearly, in details, after went through the video of the problem area. He didn’t even charge for the service. Thank you Mason!
May 6, 2021
Jyotsna V.

Architectural Services

So far so good! Sent detailed quotes and took the time to explain the details over the phone. Sounded Very knowledgeable about the requirements and gave valuable advise about the construction industry. $8500 for the deliverables for permitting process was slightly on the higher side of our budget. But we’re unaware of the right price for this type of service. Still doing the research and will surely work with this company, if the price quoted is reasonable.
Mar 28, 2021
Fortunate C.

Structural Engineering Services

Working with Mason has been a great experience. I asked for a very expedited service, and he delivered before time and great quality work. Very easy to work with and always responsive. Will definitely work with him again. Thanks for making the process so easy and enjoyable!
Mar 8, 2021
Lani S.

Structural Engineering Services

mason (Lei Zheng) did a foundation evaluation and earth quake retrofit reinforcement structural design for my house. The job has no complaint. I will recommend him to anyone who need structural service.
Nov 4, 2020

License Type: Professional Engineer – Civil (CA)

Background Check

Lei Zheng


  • What should the customer know about your pricing (e.g., discounts, fees)?

    I disclose my price over the phone.

  • What is your typical process for working with a new customer?

    Discuss and scope the work then explain the normal process to client, and set milestone for each party to reach and get the job done in time.

  • What education and/or training do you have that relates to your work?

    Master degree in civil engineering specialized in structural design and analysis. 20 years of experience in the field. I like to discuss with client the detail of how to do it.

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