We are dedicated to providing our clients with the very best in excavation and building site services. We specialize in residential and commercial services and take pride in the attention to detail put into each of the projects we're involved with. We're known for our quality work and the integrity of our business. We look forward to building long-term relationships with our clients, and guarantee your satisfaction.
"Carlos and his team did an amazing job. Very punctual, and clean. Carlos explained everything that needed to be done, and why. Carlos was very reasonably priced and fair. I highly recommend Carlos and will be using him again for an upcoming project."
Eddie C on August 2021
We are dedicated to providing our clients with the very best in excavation and building site services. We specialize in residential and commercial services and take pride in the attention to detail put into each of the projects we're involved with. We're known for our quality work and the integrity of our business. We look forward to building long-term relationships with our clients, and guarantee your satisfaction.
"Carlos and his team did an amazing job. Very punctual, and clean. Carlos explained everything that needed to be done, and why. Carlos was very reasonably priced and fair. I highly recommend Carlos and will be using him again for an upcoming project."
Eddie C on August 2021
Established in 2024, Aventra Engineering Services Inc. (Aventra) (License #1133283) leverages more than four decades of collective expertise in structural engineering, seismic retrofitting, concrete infrastructure, and erosion control solutions. Our commitment to craftsmanship, transparent communication, and uncompromising standards drives every project, ensuring reliable, high–quality outcomes for public and private sector clients across California’s Bay Area. Founded by CEO Aryan Pakkhoo and his father, Vice President Manoochehr Pakkhoo, a seasoned construction professional, Aventra blends data‑driven strategy with hands‑on insight to keep structural integrity, safety, and efficiency at the forefront of every build. We uphold strict quality control, a safety‑first culture, and seamless collaboration among architects, contractors, and agencies from project inception through completion, delivering resilient structures that protect communities and budgets alike.
"Professional and thorough work in helping construct an in law unit exactly to our specifications. Flexible with design process and we were completely satisfied. "
Steven S on May 2025
Established in 2024, Aventra Engineering Services Inc. (Aventra) (License #1133283) leverages more than four decades of collective expertise in structural engineering, seismic retrofitting, concrete infrastructure, and erosion control solutions. Our commitment to craftsmanship, transparent communication, and uncompromising standards drives every project, ensuring reliable, high–quality outcomes for public and private sector clients across California’s Bay Area. Founded by CEO Aryan Pakkhoo and his father, Vice President Manoochehr Pakkhoo, a seasoned construction professional, Aventra blends data‑driven strategy with hands‑on insight to keep structural integrity, safety, and efficiency at the forefront of every build. We uphold strict quality control, a safety‑first culture, and seamless collaboration among architects, contractors, and agencies from project inception through completion, delivering resilient structures that protect communities and budgets alike.
"Professional and thorough work in helping construct an in law unit exactly to our specifications. Flexible with design process and we were completely satisfied. "
Steven S on May 2025
We take great pride in our experience, expertise, quality and customer service that we provide to meet your needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer a professional manner. Our reputation is based on service, safety and quality, regardless of how large or small the job.
"Quick, Effective and the project was done in a timely manner. Thank you Ultra!"
Shane D on February 2025
We take great pride in our experience, expertise, quality and customer service that we provide to meet your needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer a professional manner. Our reputation is based on service, safety and quality, regardless of how large or small the job.
"Quick, Effective and the project was done in a timely manner. Thank you Ultra!"
Shane D on February 2025
We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumers needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.
"Jose and team did a great job on a French drain project at our home. The whole process from estimate through project completion was done very efficiently and effectively with good communication and follow through. Very happy with the end result and will hire them again to do other projects on my house."
Bill K on April 2025
We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumers needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.
"Jose and team did a great job on a French drain project at our home. The whole process from estimate through project completion was done very efficiently and effectively with good communication and follow through. Very happy with the end result and will hire them again to do other projects on my house."
Bill K on April 2025
PANTOJA ENGINEERING AND EXCAVATION is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business.
"We recently worked with Pantoja Engineering And Excavation, Inc. on a site development project, and we couldn’t be more satisfied with the results. From start to finish, their team demonstrated professionalism, attention to detail, and a strong commitment to delivering high-quality work on time and within budget. Their crew was well-equipped and highly skilled, handling everything from grading and trenching to foundation prep with precision and efficiency. Communication throughout the project was clear and consistent, which made coordination smooth and stress-free. It’s rare to find a contractor that combines technical expertise with such a strong work ethic and integrity. We highly recommend Pantoja Engineering And Excavation, Inc. to anyone in need of excavation or engineering services and look forward to partnering with them again on future projects."
James M on May 2025
PANTOJA ENGINEERING AND EXCAVATION is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business.
"We recently worked with Pantoja Engineering And Excavation, Inc. on a site development project, and we couldn’t be more satisfied with the results. From start to finish, their team demonstrated professionalism, attention to detail, and a strong commitment to delivering high-quality work on time and within budget. Their crew was well-equipped and highly skilled, handling everything from grading and trenching to foundation prep with precision and efficiency. Communication throughout the project was clear and consistent, which made coordination smooth and stress-free. It’s rare to find a contractor that combines technical expertise with such a strong work ethic and integrity. We highly recommend Pantoja Engineering And Excavation, Inc. to anyone in need of excavation or engineering services and look forward to partnering with them again on future projects."
James M on May 2025
In and Out Plumbing and Construction is a family owned business and we take pride in our honesty, our integrity, and ourselves. Our Plumbers and Technicians are trained, licensed, bonded and insured professionals. We focus on residential and commercial plumbing in the Bay Area.
"Very professional team. Was easy to schedule time for a walkthrough for a quote, and the quote was provided in a timely manner as well. Work was on time and well done. Will hire them again for future projects!"
Evan W on June 2024
In and Out Plumbing and Construction is a family owned business and we take pride in our honesty, our integrity, and ourselves. Our Plumbers and Technicians are trained, licensed, bonded and insured professionals. We focus on residential and commercial plumbing in the Bay Area.
"Very professional team. Was easy to schedule time for a walkthrough for a quote, and the quote was provided in a timely manner as well. Work was on time and well done. Will hire them again for future projects!"
Evan W on June 2024
Amesos Plumbing, Inc. We pride ourselves on the quality work we provide, while delivering great customer service. Check out our services offered and call or click to schedule an estimate today!
"So far so good. Snaking of kitchen sink with very old pipes. Hopefully snake did not poke pipes. Only time will tell. Keeping fingers crossed. They did a good job explaining and triple checked for leaks before they left. Of course they tried to upsell and gave us a metal trap they did not quote us upfront for. We would have chosen it over plastic, but price difference would need to be cleared upfront. That's the only negative. Otherwise, thus far we are very happy with the result. Thank you for coming on such short notice and on time! Super appreciated. 4.5-5 stars."
Susanne P on December 2024
Amesos Plumbing, Inc. We pride ourselves on the quality work we provide, while delivering great customer service. Check out our services offered and call or click to schedule an estimate today!
"So far so good. Snaking of kitchen sink with very old pipes. Hopefully snake did not poke pipes. Only time will tell. Keeping fingers crossed. They did a good job explaining and triple checked for leaks before they left. Of course they tried to upsell and gave us a metal trap they did not quote us upfront for. We would have chosen it over plastic, but price difference would need to be cleared upfront. That's the only negative. Otherwise, thus far we are very happy with the result. Thank you for coming on such short notice and on time! Super appreciated. 4.5-5 stars."
Susanne P on December 2024
Plumbing and Rooter Services with Free Estimates and emergency calls available. Sewer and Replacement, Camera Inspection, Drain repair and cleaning service, water heaters, toilets, sinks, faucets, showers repair and replacement, drain clogged.
"They did a fabulous job and was very professional."
Timothy B on May 2025
Plumbing and Rooter Services with Free Estimates and emergency calls available. Sewer and Replacement, Camera Inspection, Drain repair and cleaning service, water heaters, toilets, sinks, faucets, showers repair and replacement, drain clogged.
"They did a fabulous job and was very professional."
Timothy B on May 2025
Family owned and operated Heavy Load Construction has been serving the Bay area for over 30 years. Fully licensed, bonded and insured we specialize in Excavating, Grading, and Demolition projects at an affordable price. We also offer a price match guarantee. FREE delivery of back-fill dirt. Contact Heavy Load Construction today !
"They were very good in attention to detail and kept us up to date and did a great cleaned up."
CARL C on February 2020
Family owned and operated Heavy Load Construction has been serving the Bay area for over 30 years. Fully licensed, bonded and insured we specialize in Excavating, Grading, and Demolition projects at an affordable price. We also offer a price match guarantee. FREE delivery of back-fill dirt. Contact Heavy Load Construction today !
"They were very good in attention to detail and kept us up to date and did a great cleaned up."
CARL C on February 2020
3 EMPLOYEES. NO SUBS. CHARGES FLAT RATE. NO TRAVEL CHARGES. NO EXTRA CHARGE FOR AFTER- HOURS SERVICE.
3 EMPLOYEES. NO SUBS. CHARGES FLAT RATE. NO TRAVEL CHARGES. NO EXTRA CHARGE FOR AFTER- HOURS SERVICE.
The excavation process requires four to eight weeks after preparations are complete. This timeline may extend considerably if contractors encounter unexpected challenges such as rocky soil formations, concealed utility lines, or foundation issues requiring remediation. Additional time requirements for drainage installation, waterproofing, and utility connections should also factor into your planning schedule. Consulting with experienced local contractors provides the most accurate timeline projections.
Creating a basement in high water table conditions remains possible but requires specialized moisture management systems. Contractors implement comprehensive waterproofing, robust drainage networks, and appropriate sump pump systems to manage groundwater infiltration. These enhanced moisture protection measures increase project costs but remain essential for long-term functionality. Professional evaluation of specific site conditions determines the most appropriate moisture management approach.
Several indicators suggest potential challenges for basement excavation, including consistently damp soil conditions, visible foundation deterioration, or significant settlement in existing structures. Properties with unstable soil compositions or bedrock near the surface may present prohibitive excavation costs. Professional structural assessment identifies specific challenges and potential mitigation strategies before committing to major excavation projects.
The value enhancement from basement additions varies considerably based on local market preferences, finish quality, and functional utility. Well-executed basement spaces with proper egress, comfortable ceiling heights, and quality finishes provide the strongest return on investment. Consulting with local real estate professionals provides insight into specific value expectations for your market area and property type.
Most jurisdictions require comprehensive building permits for basement excavation projects due to their structural implications. These include general construction permits plus specific approvals for structural modifications, electrical installations, plumbing systems, and mechanical equipment. Many municipalities also require engineer-stamped plans certifying structural integrity. Working without proper permits risks substantial penalties and potentially costly remediation requirements.