Business Details
48 Years
experience
Civil Engineering & Land Surveying Experts in San Jose
Founded in 1978, Underwood & Rosenblum has established itself as a trusted leader in civil engineering and land surveying solutions across Northern California. Our team of seasoned professionals brings over four decades of experience to projects ranging from small residential developments to large-scale commercial and municipal infrastructure. We prioritize direct client collaboration, leveraging state-of-the-art technology and in-house expertise to deliver cost-effective, code-compliant designs that meet evolving regulatory requirements. With a proven track record in over 60 school districts and numerous community initiatives, we combine technical excellence with a commitment to public service, including pro bono projects for organizations like California State Parks.Our integrated approach ensures seamless coordination between civil engineering and surveying services, while our investment in advanced tools like GPS and Civil 3D maintains our position at the forefront of industry innovation. This dedication to quality and client satisfaction has earned us recognition as one of Silicon Valley's largest civil engineering firms, trusted by architects, developers, and public agencies alike.
Services
Land Surveying
Civil Engineering
Boundary Surveys
Site Development
Storm Water Planning
ADA Accessibility Design
Construction Staking
Subdivision Mapping
Expert Witness Services
Details
- Year established: 1978
Highlights and features
- We offer 40+ years of experience in Northern California civil engineering projects
- Our in-house surveying services ensure seamless project integration
- Direct access to senior engineers including President Frank Rosenblum
- Pioneers in adopting CADD technology and modern surveying tools
- Recognized expert witness services in civil engineering legal cases
What people say
Lifesavers
Very professional
Great product
Quick response
Knowledgeable staff
Services
Land Surveying
Our licensed surveyors provide boundary, topographic, and ALTA surveys with precision. Using GPS and robotic technology, we deliver accurate data for development, legal documentation, and infrastructure projects. Clients benefit from our 40+ years of experience in Northern California's diverse terrain.
Civil Engineering
We offer full-cycle civil engineering services including grading plans, stormwater management, and ADA compliance design. Our team ensures code compliance while optimizing site functionality for commercial, municipal, and educational projects across California's Bay Area.
Construction Staking
Our surveyors translate engineering plans into precise field markings using advanced equipment. This service ensures accurate implementation of building layouts, utilities, and infrastructure improvements for developers and contractors.
Subdivision Mapping
We specialize in SB9-compliant lot subdivisions and urban infill projects. Our services include preparing technical documentation for local jurisdictions, helping homeowners and developers navigate California's complex subdivision regulations.
Expert Witness Services
President Frank Rosenblum provides expert testimony in civil engineering and boundary dispute cases. His deep technical knowledge and courtroom experience offer clients authoritative support in legal matters involving infrastructure and property rights.
People
Frank Rosenblum
Principal Engineer / President
With over 40 years in the field, Frank leads engineering operations and serves as expert witness. He joined the firm in 1984 and became President in 1992, driving technological innovation and community engagement.
Matt Kamkar
Principal Engineer
Matt oversees engineering projects and serves on community boards shaping housing development standards. He contributes technical expertise to complex site development and regulatory compliance matters.
Mark Sorenson
Senior Associate Engineer
Mark provides engineering solutions with 20+ years of experience. Known for responsiveness, he manages projects from concept to completion while maintaining strong client relationships in the architecture community.
Teodoro Martinez
Associate Land Surveyor
Theo delivers surveying services with technical precision. He assists clients with property assessments and subdivision requirements, combining field expertise with clear communication about surveying processes and documentation.
Questions
What services does Underwood & Rosenblum offer?
We provide civil engineering and land surveying services including boundary surveys, site development plans, stormwater management, ADA compliance, construction staking, and expert witness testimony.
Do you serve residential property owners?
Yes, we assist homeowners with land surveys, subdivision mapping under California SB9, and site development projects while maintaining focus on regulatory compliance and technical accuracy.
How quickly can you complete a land survey?
Our typical turnaround is 3-5 business days for standard surveys, with emergency services available. We've completed urgent projects in 24 hours when required by permitting timelines.
Are you licensed to work throughout California?
Yes, we hold active licenses for civil engineering and land surveying in California and have completed projects across Northern California's diverse jurisdictions.
What makes your firm different from competitors?
We combine 40+ years of local experience with direct access to senior professionals, in-house surveying capabilities, and proven technology leadership using tools like Civil 3D and robotic total stations.
