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WHO WE ARE

Clarity, Accuracy, and Confidence from the Ground Up

Sebastian Surveying Services was established on the belief that dependable data drives successful development. With a focus on precision, we offer expert-led surveying and geospatial solutions for landowners, developers, engineers, and institutions. Whether it’s a simple lot verification or a multi-hectare LiDAR project, our team is committed to delivering clarity through every contour, line, and coordinate.

SERVICES AND PRODUCTS

We offer a complete suite of Geospatial Data products and Geodetic Engineering services.

ARIAL SURVEYS

An aerial survey is the process of gathering information and imagery from the air, using platforms like airplanes, helicopters, drones, or satellites. It’s a method of collecting geospatial data from an overhead perspective to map and analyze the Earth’s surface and the objects on it.

  • UAV LiDAR Survey: Capture terrain and surface features using UAV-mounted LiDAR. Ideal for areas with dense vegetation or terrain variation.
  • UAV Photogrammetry: Produce orthomosaics and 3D models from drone imagery. Best for planning, documentation, and volume calculations.
  • UAV Thermal Inspection of Solar Panels: Detects panel overheating, defects, or alignment issues using drone-mounted thermal sensors.
  • UAV Building Façade and Roof Inspection: Assess hard-to-reach vertical structures without scaffolding or manual climbing.

General UAV Visual Inspection: Provide visual documentation for assets, utilities, or infrastructure audits.

LAND SURVEYS

A land survey is the process of measuring and mapping a piece of land. It precisely defines the boundaries, dimensions, and features of a property.

  • Relocation Survey: Confirm property boundaries on-site to avoid encroachments or disputes. Ideal for fencing, titling, and lot confirmation before purchase.
  • Subdivision Survey: Legally divide a single, titled property into two or more smaller lots, complete with individual technical descriptions and plans for titling.
  • Consolidation Survey: Formally merge two or more adjoining, titled properties into one single lot with a new, unified title.
  • Cadastral Survey: Tie properties into official cadastral maps—often required for DENR filings, land registration, and community-level development.

Lot Plan & Vicinity Map Preparation: Generate updated technical plans and vicinity maps required for permits and title-related documents.

ENGINEERING SURVEYS

Engineering surveys are a specialized type of surveying that focuses on the specific needs of engineering projects. They provide the precise measurements and spatial data necessary for the planning, design, and construction of everything from roads and bridges to buildings and utility lines. 

  • Topographic Survey: Generate elevation data, contours, and surface details for site development, architectural design, and flood analysis.
  • Bathymetric Survey: Measure underwater terrain using echo-sounders and GNSS for harbors, coastlines, rivers, or feasibility studies.
  • Construction Survey: Ensure precise execution of your building plans with our layout, staking, and verticality alignment services for projects of all sizes.
  • As-Built Survey: Document the final, post-construction state of a project, providing an accurate record for compliance, asset management, and future expansions.
  • Construction Survey: Translate blueprints to the field through layout, staking, and verticality checks for accurate construction implementation.
  • Route Survey: Used for road, pipeline, or utility alignment studies—capturing terrain profiles along linear corridors.

We help you make better decisions.

Be it for your dream house, construction of roads, planning for energy-related facilities, or developing a sustainable farm, we provide rich and accurate geospatial data for better decision-making, smarter planning, and improved design.

GPS SURVEY

A GPS survey uses signals from the Global Navigation Satellite System (GNSS) to determine precise locations on Earth. Unlike traditional surveying methods that rely on measuring angles and distances between points on the ground, a GPS survey calculates positions by triangulating signals from a network of orbiting satellites. This technology has revolutionized the surveying industry by significantly increasing efficiency and enabling accurate measurements over large and difficult-to-access areas.

  • Establishing Geodetic Control Points: Create RTK or static-based control networks tied to NAMRIA or global reference frames.
  • Photo Control for Drone Mapping: Install and survey Ground Control Points (GCPs) to ensure photogrammetric accuracy.

GEOTECHNICAL SURVEY

Geotechnical investigation is the process of exploring and evaluating the subsurface conditions of a site to understand the properties of the soil and rock. It’s a critical first step in any major construction project, as it provides essential data for designing safe, stable, and cost-effective foundations. Soil testing is a fundamental component of this investigation, involving a series of procedures to determine the physical and engineering characteristics of the soil.

  • Standard Penetration Test (SPT), Borehole Drilling, and Soil Classification: Understand subsurface characteristics for slope protection, foundation design, or retaining wall construction.
  • Geohazard Assessments: Combine geological data with survey insights to evaluate risks from flooding, earthquakes, or subsidence.

ENVIRONMENTAL SURVEY

Survey consultation services provide expert guidance and management for all types of survey projects. A survey consultant acts as a strategic advisor, leveraging specialized knowledge to ensure that a survey—whether it’s for land, construction, or research—is planned correctly, executed efficiently, and yields accurate, reliable data.

  • Technical Reviews & Due Diligence: Ideal for real estate buyers, developers, or legal teams needing expert land review.
  • Litigation Support & Expert Reports: Used in land disputes, boundary issues, or TCT correction proceedings.
  • Strategic Survey Planning: For complex or large-scale projects requiring multi-method surveying and regulatory strategy.

Trusted by Professionals. Powered by Precision.

  • Licensed Expertise: Our team consists of licensed Geodetic Engineers, experienced drone pilots, and project managers with decades of combined field experience.
  • Cutting-Edge Technology: We use RTK GPS, UAV LiDAR, GNSS receivers, echo-sounders, and precision tools for consistent, high-accuracy results.
  • Client-First Approach: From property owners to corporate clients, we tailor each engagement based on your goals, timeline, and budget.
  • Regulatory Compliance: All deliverables adhere to DENR, LRA, CAAP, or local LGU standards. You get certified plans, sealed reports, and peace of mind.
  • Timely Delivery: We understand project timelines are critical. We are committed to delivering comprehensive survey plans and reports on schedule.
  • Proven Track Record: We’ve completed more than 100 projects nationwide—from titled residential properties to large-scale developments, including solar farms and both onshore and offshore wind energy sites.
  • Client-Focused Approach: We provide dedicated support and clear communication throughout the entire surveying process.

Let’s Bring Your Project into Focus

Whether you need a boundary confirmed, a drone inspection, or a full-scale survey package, we’re here to help. Get in touch for a no-pressure consultation and an honest, detailed quotation from our team.

Mission - Vision

Mission

Through a unique combination of engineering, construction and design disciplines and expertise, Concor delivers world class infrastructure solutions to customers and stakeholders across a broad range of industry sectors.

Vision

Through a unique combination of engineering, construction and design disciplines and expertise, Concor delivers world class infrastructure solutions to customers and stakeholders across a broad range of industry sectors.

OUR PROCESS

By starting with a comprehensive assessment of your requirements, you’ll be provided with a project proposal based on appropriate methods and technologies. Upon turnover of the project deliverables, our after-sales support and project managers ensure you make the most out of your precious datasets.

01 01

Planning And Strategy

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02 02

Project Proposal

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03 03

Project Deliverables

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the process
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