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I need a skilled contractor to underpin the concrete slab of a single-family dwelling to support a new second floor. The current condition of the slab is good, and I have completed architectural and engineering plans for the new floor. However, the plans have not yet been reviewed or approved by a structural engineer. Key Requirements: - Underpinning expertise - Experience with residential projects - Ability to work with existing architectural/engineering plans - Structural engineering collaboration for plan approval Ideal Skills and Experience: - Proven track record in underpinning concrete slabs - Strong understanding of residential structural requirements - Ability to coordinate with structural engineers - Relevant certifications and licenses Please provide examples of similar work and relevant qualifications.
Project ID: 40518605
39 proposals
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Active 8 days ago
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39 freelancers are bidding on average $367 USD for this job

Hello, we have reviewed your project. Together with my team, we can assist you in every way in terms of architecture. From architectural technical drawings to ultra-realistic 3D photos. We have provided remote support to many offices abroad and we continue to work with them, in this sense, we have important references especially from America and Germany. In addition, with our engineering capabilities, we can present you the cost analysis of your project and the amount of materials you will use in your project as a report. We create contemporary and traditional buildings with a flexible design approach. We have a command of all architectural and engineering programs and have a carefully established team. Do not forget that you will enjoy working with us and we will decide together with you at every moment of your project, please send us a message to get started. Good day.
$500 USD in 7 days
7.7
7.7

My name is Azra, and I am more than just a Structural Engineer and AutoCAD expert -- I bring with me extensive experience in multiple areas of construction and design, making me a valuable asset for your project. From my work with 2D and 3D architectural drawings to my skilled understanding of underpinning concrete slabs, I've been involved in numerous successful residential projects over the years. I understand how important maintaining the integrity of your existing slab is while supporting a new second floor. My experience coordinating with structural engineers will prove invaluable in working through your plans, and ensuring their approval for future action. I've worked with similar projects in the past, executing tasks professionally, skillfully, and ultimately delivering what the client envisioned. In addition to my technical skills, my strong communication skills further enhance my ability to understand, interpret, and fast track any potential issues that may arise during the project. It would be a privilege to lend my hands-on expertise, strategic thinking, and commitment to delivering results into this next phase of your project. Choose Azra for efficient and innovative underpinning solutions that will transform your dwelling safely and securely into multiple stories of your vision!
$260 USD in 3 days
7.2
7.2

Hi, I have worked on similar residential structural upgrade projects where existing slabs and foundations had to be reviewed before adding new floor loads. I have also helped coordinate underpinning and foundation-strengthening scopes with structural engineers, including checking existing plans, load paths, slab condition, and construction sequencing before work began. I'd love to share my experiences with you. Best regards, Epa
$250 USD in 3 days
5.8
5.8

Hi there, I am an AutoCAD & Revit expert, Architect and Structural engineer. I am interested in assisting with the underpinning and structural review of your existing concrete slab to support the addition of a second floor. My services can include: ✨Review of existing architectural and engineering plans ✨Assessment of the current slab and foundation system ✨Evaluation of proposed second-floor loading ✨Underpinning recommendations and detailing ✨ Foundation strengthening options ✨Construction sequencing recommendations ✨Coordination with structural engineering requirements ✨Preparation of supporting drawings and documentation If you hire me, then your project will be completed more successfully. Looking forward to discussing your project and getting started. Best regards Ivy
$500 USD in 5 days
6.0
6.0

Hi — this is Mohand, a U.S.-based structural engineer with AutoCAD expertise, and I’m excited about the opportunity to help with your "Concrete Slab Underpinning for Second Floor." I’ve reviewed your brief and can provide experienced underpinning contractors and onsite oversight to ensure the slab modifications safely support the new second-floor loads. My approach pairs proven underpinning methods (pit underpinning, mini-piles, or micro-piles as appropriate) with coordination of your existing architectural and engineering plans. I’ll review your drawings, perform any required structural calculations, and produce detail drawings or revisions needed for structural approval. I have hands-on residential experience and can manage contractor selection, quality control, and communication with permitting authorities. I’ll supply examples of similar underpinning projects, engineering stamps/certifications, and references upon request. If that sounds good, I can start by reviewing your plans and scheduling a site assessment to produce a firm scope and timeline. Would you like me to proceed with a plan review now?
$500 USD in 7 days
5.6
5.6

As an architect with deep experience in architectural design, technical drawings, and project management, I believe I'm the top candidate for your concrete slab underpinning project. My ability to blend both creativity and practicality in my designs ensures a solution that suits your specific needs while maintaining all structural requirements. Utilizing my strong command of AutoCAD and 3D modeling, I will create detailed, construction-ready drawings that reflect your existing architectural and engineering plans efficiently. My understanding of the underpinning process coupled with my experience working on residential projects makes me uniquely qualified for your job. I've not just completed similar work in the past but have always delved precisenessasonryas well as adhering to strict schedules. Furthermore, considering the need for structural engineering collaboration to ensure the approval of your plans, our synergy will be exceptional. Collaborative efforts between professionals are critical, and I'm well-versed in coordinating with structural engineers to get projects approved. With me onboard,haraoh the hiccups often associated with suchprojects will be smoothed out, resulting in a flawless and excellent output for you. Hiring me brings you a guarantee of exceptional skill, dedicated professionalism, and a sharp eye for detail into your project - three qualities essential for successful floor underpinning. Let's get started!
$300 USD in 7 days
5.5
5.5

Hi I’m responding to your requirement for a contractor to underpin the concrete slab of a single-family dwelling to support a new second floor—how can the existing architectural and engineering plans be validated and safely adapted for structural approval and execution? With strong experience in residential structural CAD detailing, load-path coordination, and construction documentation, I can assist in refining your existing plans, coordinating with structural engineers for verification, and ensuring the underpinning design aligns with safety and code requirements. I will review slab conditions, interpret your drawings accurately, and prepare clear, buildable detailing to support approval and on-site execution. My background in structural layouts, reinforcement detailing, and residential modification projects ensures practical, compliant, and construction-ready output with clear coordination between design intent and engineering validation. I will deliver coordinated drawings and revisions promptly and remain available for fast iterations until final approval is achieved, ensuring smooth execution from design to construction stage. Best Wishes.
$250 USD in 5 days
5.5
5.5

Hello, I can assist with the underpinning and structural coordination required to prepare your existing single-family dwelling for the addition of a new second floor. With experience in residential construction and structural drafting, I understand the importance of thoroughly assessing the existing slab and foundation before any work begins. Since the architectural and engineering plans have not yet been reviewed by a structural engineer, the first step will be coordinating with a licensed structural professional to verify load paths, foundation capacity, and the specific underpinning strategy required for the proposed addition. Services can include: • Review of existing architectural and engineering plans • Coordination with a structural engineer for analysis and approval • Development of underpinning details and construction sequencing • Residential construction documentation support I appreciate the complexity of modifying existing structures and recognize that careful planning, proper engineering oversight, and experienced execution are essential to a successful outcome. I would be happy to review your current plans and discuss the project requirements in more detail. Best regards, Roni Susanto
$250 USD in 3 days
4.7
4.7

Hello, I am interested in assisting with your residential slab underpinning project. I have experience working with existing structures, coordinating with architectural and structural plans, and providing solutions that meet residential construction requirements. I can review the existing plans, evaluate the slab/foundation conditions, and coordinate with the structural engineer to ensure the underpinning design is properly developed for the new second-floor addition. My experience includes residential structural projects, foundation modifications, and construction coordination. I focus on accurate documentation, code compliance, and practical solutions that support successful project approval and construction. I would be happy to discuss your project details and provide examples of similar work. Thank you,
$500 USD in 7 days
4.6
4.6

Hello, I am interested in assisting with your Concrete Slab Underpinning project for the second-floor addition. With experience in structural engineering and foundation reinforcement projects, I understand the importance of evaluating existing load-bearing conditions and designing safe, code-compliant underpinning solutions to support additional structural loads. My approach focuses on ensuring long-term stability while minimizing construction risks. For this project, I will review the existing structural drawings, foundation details, soil conditions, and proposed second-floor loading requirements. Based on the assessment, I will develop underpinning recommendations, structural calculations, and reinforcement details necessary to safely transfer the increased loads to the foundation system. I can also coordinate design considerations to ensure compliance with local building codes and construction standards. I am committed to delivering accurate engineering solutions, clear documentation, and timely communication throughout the project. My goal is to provide a practical and cost-effective underpinning design that supports your second-floor expansion while maintaining the structural integrity of the existing building. I look forward to discussing your project requirements and contributing to its successful completion.
$250 USD in 7 days
4.3
4.3

Hi there, I can assist with the underpinning scope for your single-family residence and coordinate the process required to safely support the addition of a new second floor. I have experience working alongside structural engineers and contractors on residential strengthening projects where existing foundations and slabs must be assessed and upgraded to accommodate increased loads. The first step would be reviewing the existing architectural and engineering drawings, evaluating the current slab and foundation system, and confirming the proposed underpinning approach with a licensed structural engineer before construction proceeds. This ensures the final solution addresses load transfer, sequencing, soil considerations, and local code requirements while minimizing disruption to the existing structure. I can collaborate closely with the structural engineer to refine the details, provide clear construction documentation, and support implementation through the approval process. Experience with residential renovations and structural modifications allows me to identify potential issues early and recommend practical, cost-effective solutions. Please share the available plans and any existing geotechnical or site information, and I’d be happy to discuss the best approach and timeline for your project.
$250 USD in 7 days
3.9
3.9

Projects involving a new second-story addition require a thorough evaluation of the existing foundation system before any underpinning strategy can be determined. My approach would begin with reviewing the architectural and engineering plans, evaluating the existing slab and foundation details, and coordinating with a licensed structural engineer to verify load paths, bearing capacity, and any required reinforcement. Once the structural review is complete, the underpinning scope can be developed to support the additional loads while maintaining compliance with local building codes and permitting requirements. I can assist with foundation assessment coordination, construction planning, structural detailing review, and preparation of documentation needed to support contractor execution and permit approval.
$350 USD in 3 days
4.3
4.3

Hi there, I saw that you need contractor for underpinning concrete slab in single family dwelling for second floor support. I can work with existing engineering plans coordinate with structural engineers and deliver safe residential foundation strengthening with proven experience in similar projects. You can view my previous work here: https://www.freelancer.com/portfolio-items/10388227-3d-interior-rendering https://www.freelancer.com/portfolio-items/8610743-3d-exterior-rendering https://www.freelancer.com/portfolio-items/10388238-2d-autocad-plan-architecture-and-mep Thanks & Regards, Humayo.
$250 USD in 2 days
2.5
2.5

Hello, I am a structural designer. Have 20 years of experience. I have worked a lot with underpinnings Have FL, NY, NJ, PA, WA, TX, AZ and other PE licenses. I can help you with the design and permit/construction drawings. I use Revit or Autocad. Thanks!
$750 USD in 7 days
2.7
2.7

Hi there, Looking at your project, I’m confident my AutoCAD skills and structural engineering background will ensure precise underpinning of your concrete slab. I’ve previously collaborated on residential projects, ensuring safety and compliance while working closely with structural engineers to get plans approved. Once I review your architectural and engineering plans, I can provide a detailed plan aligned with your existing setup. I’ll make sure the underpinning meets all residential standards and integrates seamlessly. Let’s chat about your plans and how I can help bring your second-floor expansion to life without compromising your current slab. Expect a timeline soon after project initiation to keep things moving. Would you like a humorous yet thoughtful take on the complexities of underpinning a residential slab? Bidding on this task with enthusiasm and a thorough understanding of residential underpinning, Thanks, Gourav
$250 USD in 1 day
1.9
1.9

Hello, I am a Civil/Structural Engineer with extensive experience in residential structural upgrades, foundation strengthening, underpinning design coordination, and load-path evaluations for second-story additions. I have worked on numerous projects involving existing slab-on-grade foundations where additional loads from new floors required structural assessment, underpinning recommendations, and coordination with licensed structural engineers for final approval. For your project, I can review the existing architectural and engineering drawings, evaluate the current foundation requirements for the proposed second floor, and assist in developing a practical underpinning strategy based on the existing slab condition, soil considerations, and structural loading requirements. My approach includes reviewing load transfers, identifying critical bearing locations, assessing foundation capacity, and coordinating with the structural engineer to ensure all strengthening measures comply with applicable residential building codes. I have experience with residential additions, reinforced concrete foundations, underpinning details, footing enlargements, and structural rehabilitation projects. Deliverables can include foundation review drawings, underpinning layouts, construction details, quantity estimates, and coordinated documentation to support the structural engineer's approval process.
$250 USD in 3 days
1.5
1.5

Hello! Your project involves underpinning an existing concrete slab to safely transfer the additional loads from a new second floor, while ensuring the existing plans satisfy structural requirements and approval standards. I have experience with residential foundation strengthening and structural coordination, working from existing architectural and engineering plans to assess load paths, design the underpinning approach, and support structural engineer review and approval. My approach is to evaluate the slab and foundation conditions, verify design loads, implement the appropriate underpinning system, and coordinate all required structural documentation for compliance. I understand the importance of maintaining structural integrity while minimizing risk to the existing dwelling. I would be happy to discuss the project and review the available plans.
$250 USD in 3 days
0.0
0.0

Hello, I have reviewed the project and can handle the slab underpinning works needed for the proposed second-floor addition. I have experience with residential underpinning, structural coordination, and working from existing plans. I can firmly complete the project within the established timeframe at the lowest possible cost. Please share drawings, foundation details, and site information, and contact me for a detailed discussion. Best regards, Nathaniel
$400 USD in 3 days
0.0
0.0

Hi, I can help with the underpinning plan for your single-family slab so it is ready for structural engineer review and safe construction. I have experience with residential structural support work, slab/foundation review, underpinning layouts, AutoCAD drafting, and coordinating drawings with engineer requirements. My method: 1. Review your architectural and engineering plans, slab condition notes, soil/foundation information, and second-floor load requirements. 2. Check the existing slab, footing assumptions, bearing points, column/wall load paths, and areas needing reinforcement. 3. Prepare an underpinning strategy using staged sections, proper temporary support, excavation sequence, concrete placement, dowels/rebar, and curing notes. 4. Update AutoCAD drawings with underpinning locations, dimensions, sections, notes, and construction sequence. 5. Coordinate required changes for structural engineer approval before field work starts. 6. Provide a clear contractor checklist so the work can be done safely and inspected correctly. Creative idea: I can add a phased underpinning diagram showing the order of work, so the contractor does not weaken adjacent slab/foundation areas during excavation. I can share similar residential foundation/slab support examples and relevant drafting/structural coordination experience. I can start after receiving the plans, photos, and site details.
$250 USD in 4 days
0.0
0.0

Hello, I have experience with residential underpinning, slab strengthening, and foundation support work for additions where existing structures need to carry new vertical loads. This project interests me because adding a second floor over a slab requires careful sequencing, temporary support, engineer coordination, and safe execution before construction begins. I will review your architectural and engineering plans, inspect the slab and load paths, confirm underpinning locations, and coordinate with a licensed structural engineer for plan review and approval. Once approved, I will prepare the work area, install the underpinning in controlled sections, manage concrete placement and curing, and document the work for inspection. I can also provide similar project examples, license details, and references before starting. Thanks for reading my proposal. Edwin
$500 USD in 7 days
0.0
0.0

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