35th St Builders (3sb)

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Details

Founded:
2023
Hourly Rates:
$50 - $99 / hr
Employees:
2 - 9
Ratings:
4.4 8 Reviews

Industries Served

Education Financial Services Human Resources Sports & Fitness Insurance Nonprofit & NGO Events & Event Management Healthcare

Where We Specialize

19% Testing Services
Testing Services 19%
Game Development 17%
Implementation Services 17%
DevOps 12%
Progressive Web App 11%
Bot Development 8%
Mobile App Development 6%
Blockchain Development 5%
Virtual Reality 3%
AI Development 2%

Industry Expertise

Restaurant35% Education33% Food32%

Typical Project Size

51% Small Business
29% Midmarket Business
20% Enterprise

About

35th St Builders (3sb) has been in business since 2023, delivering technology projects for clients. The company's main offerings are Mobile App Development. The company operates with a team of 2 - 9 professionals. Typical hourly rates run around $50 - $99 / hr/hr. Clients have rated 35th St Builders (3sb) 4.8 out of 5 in 2 reviews. Their home base is Atlanta, GA. This gives a quick snapshot of what to expect when working with 35th St Builders (3sb).

35th St Builders (3sb) Reviews

4.4 8 Reviews
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Capable Mobile App Development team — happy with the end result

Derek Hughes / Director | Oct 06, 2026

The final product works well for us, although the process could have been smoother. Communication was consistent. We had a weekly call, a shared Slack channel and a project board we could check at any time. They shared working builds regularly, so we could test early and give feedback before things were locked in. Even with the time zone difference, responses usually came the same day and we never felt left in the dark.

We launched on schedule and have not had any major issues since. Documentation at handover was a bit thin and we had to ask for more detail.

Happy to recommend them.

Project summary

We engaged 35th St Builders (3sb) to develop a field-staff app with offline mode that syncs back to our main system. Scope included discovery workshops, development in two-week sprints and a short support period after launch. We worked together for around 8 months.

  • Overall Rating 3.5
  • Quality 3.5
  • Schedule 4.0
  • Project Cost 3.5
  • Willing To Refer 5.0
Project Type:
Mobile App Development
Project Cost:
Less than $10,000
Project Duration:
Dec 2025 - Aug 2026
Business Type:
Education
Location:
Denver, USA

Questions & Answers

Please describe your company, your role, and the industry you operate in.
I'm the Director at Bluepeak Learning LLC, a Education company based in Denver, USA. I look after our technology and work closely with outside partners on bigger projects.
What specific problem or business challenge led you to hire this company?
We needed to develop a field-staff app with offline mode that syncs back to our main system, and we didn't have the in-house capacity to do it ourselves.
What services did the company provide for your project?
Mobile App Development, including planning, development, testing and launch support.
Why did you choose this company over other providers you considered?
A colleague recommended them, and our first calls confirmed they understood what we needed.
How clearly did the company understand your requirements and business goals?
Very well. They asked a lot of questions upfront and turned our rough ideas into a clear plan.
How was your overall experience with their communication and project management?
Organised and transparent. Their project manager kept the project on track and flagged risks early.
Did the company deliver the project on time and within your expected budget?
Yes, on time and within budget.
What tangible results or business impact have you seen since the project was completed?
We can now handle more volume without adding staff, which was the main goal.
What did you like most about working with this company?
The consistency. Same team, same standard, from the first week to the last.
Would you recommend this company to others, and would you work with them again?
Yes, I've already recommended them to a couple of people I know.

Reliable IT Consulting Partner That Delivered What They Promised

Olivia Ryan / Director | Aug 30, 2026

We were very happy with how this project went. They were upfront about what was realistic within our budget, which helped us prioritise the right features. They took the time to understand our business before suggesting anything, which we appreciated after previous agencies jumped straight into building. The team asked a lot of questions early on, which felt slow at first but meant there were very few surprises later.

We launched on schedule and have not had any major issues since. I would recommend 35th St Builders (3sb) to anyone looking for a dependable IT Consulting partner.

Project summary

Our company worked with 35th St Builders (3sb) to review our technology setup and give us a roadmap for the next two years. The work covered requirements, design, development, testing and launch support. Overall it was a 4-month engagement.

  • Overall Rating 4.5
  • Quality 4.5
  • Schedule 4.5
  • Project Cost 4.5
  • Willing To Refer 5.0
Project Type:
IT Consulting
Project Cost:
$10,000 to $49,999
Project Duration:
Mar 2026 - Jul 2026
Business Type:
Financial Services
Location:
Adelaide, Australia

Questions & Answers

Please describe your company, your role, and the industry you operate in.
Swift Payments is a Financial Services business in Adelaide, Australia. As Director, I was responsible for this project on our side and the main contact for 35th St Builders (3sb).
What specific problem or business challenge led you to hire this company?
Our team was spending too much time on manual work. The goal was to review our technology setup and give us a roadmap for the next two years so they could focus on customers.
What services did the company provide for your project?
Mainly IT Consulting. They also helped with the technical planning and a few integrations with our existing tools.
Why did you choose this company over other providers you considered?
A colleague recommended them, and our first calls confirmed they understood what we needed.
How clearly did the company understand your requirements and business goals?
They understood our goals quickly, partly because they had worked with Financial Services clients before.
How was your overall experience with their communication and project management?
Good. Weekly calls, regular updates and a shared board meant we always knew where things stood.
Did the company deliver the project on time and within your expected budget?
It was delivered on time, and the final invoice matched the original estimate.
What tangible results or business impact have you seen since the project was completed?
Customer feedback has been positive, and we have seen better engagement since going live.
What did you like most about working with this company?
The consistency. Same team, same standard, from the first week to the last.
Would you recommend this company to others, and would you work with them again?
Definitely. We have already started talking about the next phase.

Great team to work with — professional, responsive and reliable

Sneha Mehta / Founder | Aug 12, 2026

Honestly, this was one of the smoothest projects we have run with an outside team. We dealt with the same core team throughout, so we did not have to keep re-explaining things. They took the time to understand our business before suggesting anything, which we appreciated after previous agencies jumped straight into building. The team asked a lot of questions early on, which felt slow at first but meant there were very few surprises later.

The IT Consulting work has already made a noticeable difference — tasks that used to take hours now take minutes. We would definitely work with them again.

Project summary

We hired 35th St Builders (3sb) to assess our architecture before a major product rebuild. They worked alongside our in-house team, which mostly handled business requirements and testing. The engagement ran for about 4 months.

  • Overall Rating 5.0
  • Quality 4.5
  • Schedule 4.5
  • Project Cost 5.0
  • Willing To Refer 5.0
Project Type:
IT Consulting
Project Cost:
$10,000 to $49,999
Project Duration:
Feb 2026 - Jun 2026
Business Type:
Human Resources
Location:
Mumbai, India

Questions & Answers

Please describe your company, your role, and the industry you operate in.
We're a mid-sized Human Resources company based in Mumbai, India. I'm the Founder and I oversaw the project from start to finish.
What specific problem or business challenge led you to hire this company?
We needed to assess our architecture before a major product rebuild, and we didn't have the in-house capacity to do it ourselves.
What services did the company provide for your project?
IT Consulting, including planning, development, testing and launch support.
Why did you choose this company over other providers you considered?
We compared three or four agencies. 35th St Builders (3sb) asked the best questions and had good reviews from past clients.
How clearly did the company understand your requirements and business goals?
Very well. They asked a lot of questions upfront and turned our rough ideas into a clear plan.
How was your overall experience with their communication and project management?
Very responsive. We usually heard back the same day, even with the time difference.
Did the company deliver the project on time and within your expected budget?
It was delivered on time, and the final invoice matched the original estimate.
What tangible results or business impact have you seen since the project was completed?
Customer feedback has been positive, and we have seen better engagement since going live.
What did you like most about working with this company?
The consistency. Same team, same standard, from the first week to the last.
Would you recommend this company to others, and would you work with them again?
Definitely. We have already started talking about the next phase.

Reliable AI & Machine Learning Partner That Delivered What They Promised

Sophie Barker / Director | Jul 26, 2026

I would rate this engagement highly on almost every front. They took the time to understand our business before suggesting anything, which we appreciated after previous agencies jumped straight into building. The team asked a lot of questions early on, which felt slow at first but meant there were very few surprises later. They were upfront about what was realistic within our budget, which helped us prioritise the right features.

We launched on schedule and have not had any major issues since. Happy to recommend them.

Project summary

We engaged 35th St Builders (3sb) to automate document data extraction that our team was doing by hand. Their team handled planning, development and QA, with our product owner signing off each milestone. The engagement ran for about 8 months.

  • Overall Rating 5.0
  • Quality 5.0
  • Schedule 5.0
  • Project Cost 5.0
  • Willing To Refer 5.0
Project Type:
AI & Machine Learning
Project Cost:
$10,000 to $49,999
Project Duration:
Sep 2025 - May 2026
Business Type:
Sports & Fitness
Location:
Cambridge, UK

Questions & Answers

Please describe your company, your role, and the industry you operate in.
I'm the Director at Bridgewater Athletics Ltd, a Sports & Fitness company based in Cambridge, UK. I look after our technology and work closely with outside partners on bigger projects.
What specific problem or business challenge led you to hire this company?
Our existing setup was holding us back. We wanted to automate document data extraction that our team was doing by hand before our busy season.
What services did the company provide for your project?
End-to-end AI & Machine Learning — from requirements and design through to deployment and a support period afterwards.
Why did you choose this company over other providers you considered?
They had relevant experience in Sports & Fitness and their proposal was the clearest of the ones we received.
How clearly did the company understand your requirements and business goals?
Very well. They asked a lot of questions upfront and turned our rough ideas into a clear plan.
How was your overall experience with their communication and project management?
Very responsive. We usually heard back the same day, even with the time difference.
Did the company deliver the project on time and within your expected budget?
It was delivered on time, and the final invoice matched the original estimate.
What tangible results or business impact have you seen since the project was completed?
Our team saves several hours a week, and we have had very few issues since launch.
What did you like most about working with this company?
That they were proactive — they suggested improvements instead of just doing what was asked.
Would you recommend this company to others, and would you work with them again?
Yes. They are a reliable AI & Machine Learning partner.

Easy to work with and very transparent on timelines and cost

Sara Qureshi / Operations Manager | Jul 10, 2026

Our experience with 35th St Builders (3sb) was really positive from start to finish. Their project manager kept things organised and was quick to flag anything that might affect the timeline. The developers were knowledgeable and made a few suggestions that ended up saving us time and money.

The result looks great and performs well, and our internal team found it easy to take over. We would definitely work with them again.

Project summary

Our company worked with 35th St Builders (3sb) to rebuild our existing mobile app, which had poor reviews and frequent crashes. They also took care of integrations with a couple of third-party tools we already used. We worked together for around 8 months.

  • Overall Rating 4.5
  • Quality 4.0
  • Schedule 5.0
  • Project Cost 4.5
  • Willing To Refer 5.0
Project Type:
Mobile App Development
Project Cost:
$50,000 to $149,999
Project Duration:
Sep 2025 - May 2026
Business Type:
Insurance
Location:
Dubai, UAE

Questions & Answers

Please describe your company, your role, and the industry you operate in.
We're a mid-sized Insurance company based in Dubai, UAE. I'm the Operations Manager and I oversaw the project from start to finish.
What specific problem or business challenge led you to hire this company?
Our existing setup was holding us back. We wanted to rebuild our existing mobile app, which had poor reviews and frequent crashes before our busy season.
What services did the company provide for your project?
Mainly Mobile App Development. They also helped with the technical planning and a few integrations with our existing tools.
Why did you choose this company over other providers you considered?
A colleague recommended them, and our first calls confirmed they understood what we needed.
How clearly did the company understand your requirements and business goals?
Better than we expected. They pointed out a few things we had not thought about.
How was your overall experience with their communication and project management?
Very responsive. We usually heard back the same day, even with the time difference.
Did the company deliver the project on time and within your expected budget?
Yes. The only extra cost came from features we added ourselves, and they quoted those fairly.
What tangible results or business impact have you seen since the project was completed?
It is still early, but the numbers are trending in the right direction and the system has been stable.
What did you like most about working with this company?
How easy they were to work with. They were responsive, honest and genuinely interested in our success.
Would you recommend this company to others, and would you work with them again?
Yes, I've already recommended them to a couple of people I know.

Exceeded our expectations on quality and communication

Arjun Agarwal / Founder | May 31, 2026

We were happy with the final result. Communication was consistent. We had a weekly call, a shared Slack channel and a project board we could check at any time. Their project manager kept things organised and was quick to flag anything that might affect the timeline.

It has made a real difference to how our team works day to day. Their team changed one developer midway, which slowed things down for a couple of weeks.

We are already discussing the next phase with them.

Project summary

We partnered with 35th St Builders (3sb) to build a Web3 dashboard and wallet integration for our platform. They also took care of integrations with a couple of third-party tools we already used. We worked together for around 5 months.

  • Overall Rating 4.0
  • Quality 4.0
  • Schedule 4.5
  • Project Cost 4.0
  • Willing To Refer 5.0
Project Type:
Blockchain Development
Project Cost:
Less than $10,000
Project Duration:
Nov 2025 - Apr 2026
Business Type:
Nonprofit & NGO
Location:
Chennai, India

Questions & Answers

Please describe your company, your role, and the industry you operate in.
I work as Founder at Lumen Trust. We operate in Nonprofit & NGO and most of our customers are in and around Chennai, India.
What specific problem or business challenge led you to hire this company?
Our existing setup was holding us back. We wanted to build a Web3 dashboard and wallet integration for our platform before our busy season.
What services did the company provide for your project?
Blockchain Development, including planning, development, testing and launch support.
Why did you choose this company over other providers you considered?
A colleague recommended them, and our first calls confirmed they understood what we needed.
How clearly did the company understand your requirements and business goals?
Well. There were a couple of points we had to clarify early on, but after that they were spot on.
How was your overall experience with their communication and project management?
Very responsive. We usually heard back the same day, even with the time difference.
Did the company deliver the project on time and within your expected budget?
Mostly. One milestone slipped by about a week, but the final delivery was on schedule and the budget held.
What tangible results or business impact have you seen since the project was completed?
Our team saves several hours a week, and we have had very few issues since launch.
What did you like most about working with this company?
That they were proactive — they suggested improvements instead of just doing what was asked.
Would you recommend this company to others, and would you work with them again?
Yes. They are a reliable Blockchain Development partner.

Dependable IT Consulting Partner for a Growing Events & Event Management Business

Lauren Bennett / Co-Founder & CTO | May 07, 2026

Honestly, this was one of the smoothest projects we have run with an outside team. They shared working builds regularly, so we could test early and give feedback before things were locked in. The team asked a lot of questions early on, which felt slow at first but meant there were very few surprises later.

It has made a real difference to how our team works day to day. We would definitely work with them again.

Project summary

We hired 35th St Builders (3sb) to review our technology setup and give us a roadmap for the next two years. The project was split into milestones, with a working build shared at the end of each one. The project took roughly 3 months from kickoff to launch.

  • Overall Rating 5.0
  • Quality 5.0
  • Schedule 5.0
  • Project Cost 5.0
  • Willing To Refer 5.0
Project Type:
IT Consulting
Project Cost:
$10,000 to $49,999
Project Duration:
Jan 2026 - Apr 2026
Business Type:
Events & Event Management
Location:
San Jose, USA

Questions & Answers

Please describe your company, your role, and the industry you operate in.
Vertex Live is a Events & Event Management business in San Jose, USA. As Co-Founder & CTO, I was responsible for this project on our side and the main contact for 35th St Builders (3sb).
What specific problem or business challenge led you to hire this company?
We needed to review our technology setup and give us a roadmap for the next two years, and we didn't have the in-house capacity to do it ourselves.
What services did the company provide for your project?
Mainly IT Consulting. They also helped with the technical planning and a few integrations with our existing tools.
Why did you choose this company over other providers you considered?
Their pricing was fair and they were honest about timelines instead of just telling us what we wanted to hear.
How clearly did the company understand your requirements and business goals?
They understood our goals quickly, partly because they had worked with Events & Event Management clients before.
How was your overall experience with their communication and project management?
Good. Weekly calls, regular updates and a shared board meant we always knew where things stood.
Did the company deliver the project on time and within your expected budget?
Yes, on time and within budget.
What tangible results or business impact have you seen since the project was completed?
Our team saves several hours a week, and we have had very few issues since launch.
What did you like most about working with this company?
Their attention to detail and the quality of the final product.
Would you recommend this company to others, and would you work with them again?
Yes, I've already recommended them to a couple of people I know.

Good results, communication improved as the project went on

Sam Lloyd / Head of Digital Transformation | Mar 10, 2026

Overall the project was a success, though it was not without some challenges. We dealt with the same core team throughout, so we did not have to keep re-explaining things. Their project manager kept things organised and was quick to flag anything that might affect the timeline.

The result looks great and performs well, and our internal team found it easy to take over. A couple of milestones slipped by a week or so, mostly around testing.

I would recommend 35th St Builders (3sb) to anyone looking for a dependable Mobile App Development partner.

Project summary

We hired 35th St Builders (3sb) to develop a field-staff app with offline mode that syncs back to our main system. They also took care of integrations with a couple of third-party tools we already used. Overall it was a 5-month engagement.

  • Overall Rating 3.5
  • Quality 4.0
  • Schedule 3.5
  • Project Cost 3.5
  • Willing To Refer 5.0
Project Type:
Mobile App Development
Project Cost:
$50,000 to $149,999
Project Duration:
Aug 2025 - Jan 2026
Business Type:
Healthcare
Location:
Cambridge, UK

Questions & Answers

Please describe your company, your role, and the industry you operate in.
We're a mid-sized Healthcare company based in Cambridge, UK. I'm the Head of Digital Transformation and I oversaw the project from start to finish.
What specific problem or business challenge led you to hire this company?
Our team was spending too much time on manual work. The goal was to develop a field-staff app with offline mode that syncs back to our main system so they could focus on customers.
What services did the company provide for your project?
Mobile App Development, including planning, development, testing and launch support.
Why did you choose this company over other providers you considered?
Their pricing was fair and they were honest about timelines instead of just telling us what we wanted to hear.
How clearly did the company understand your requirements and business goals?
Very well. They asked a lot of questions upfront and turned our rough ideas into a clear plan.
How was your overall experience with their communication and project management?
Communication was good overall and improved further once we settled into a routine.
Did the company deliver the project on time and within your expected budget?
It was delivered on time, and the final invoice matched the original estimate.
What tangible results or business impact have you seen since the project was completed?
We can now handle more volume without adding staff, which was the main goal.
What did you like most about working with this company?
That they were proactive — they suggested improvements instead of just doing what was asked.
Would you recommend this company to others, and would you work with them again?
Yes, I've already recommended them to a couple of people I know.
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