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I need help refining a spreadsheet of 1,600 commercial and residential buildings. Your task is to confirm three key data points for each record and document your work so I can easily audit it later. What you will do • Measure the footprint of every building in square metres, drawing polygons directly in Google Earth. • Pinpoint the most likely construction year, relying first on Google Earth historical imagery—the primary source I trust—then supplementing with short GPT-assisted searches or other verified sources only when imagery alone is inconclusive. • Capture the current tenant or business name exactly as it appears on Google Maps. How to document • Enter each value in the supplied spreadsheet. • Add a brief comment only for construction-year estimates, noting the imagery date or reference link that guided your decision. • Flag any uncertainty for every data type using the colour-coded column provided (e.g., high, medium, low confidence). Quality expectations Accuracy is critical; I will spot-check random samples. Any record missing a footprint polygon, year estimate, tenant name, or uncertainty flag will be considered incomplete. Please maintain consistent units (m²) and cite all image dates or external URLs used. If you are detail-oriented, comfortable navigating Google Earth and Google Maps, and can turn around reliable data quickly, I’d love to work with you.
Project ID: 40709964
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Active 6 days ago
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41 freelancers are bidding on average €473 EUR for this job

Hi, I’m an experienced data research specialist with strong skills in Google Earth, Google Maps, Excel, and detailed property research. I can accurately measure building footprints, estimate construction years using historical imagery and verified sources, and capture current tenant/business names exactly as shown on Google Maps. I’ll maintain consistent m² units, document year references, flag confidence levels, and ensure all 1,600 records are complete and audit-ready. Best regards, MD
€250 EUR in 3 days
7.4
7.4

As an experienced data professional, I understand the value of accuracy and quality in handling large datasets like the one you have described. My skills are tailored to meet just your needs. I'm comfortable with platforms like Google Earth and Google Maps that your project requires, this gives me an edge in pinpointing the necessary data points. I’m passionate about timely delivery without compromising on quality. Rest assured that irrespective of the size of your dataset, I’ll conduct accurate measurements of each building’s footprint; sourcing construction years from first my trusted primary source, Google Earth historical imagery and verifying uncertain information using reliable sources only. My attention to detail will ensure all data is captured without any missing details or uncertainty flags—a factor that could save you significant time during auditing process. So let's get started!
€250 EUR in 7 days
6.6
6.6

Not only am I confident in my ability to perform the task at hand with speed and accuracy, I believe my technical background sets me apart from the competition. My proficiency in using Google Earth and Google Maps, combined with my honed skills in data entry and Excel, make me an ideal choice for this project. Completing this job with precision and efficiency is of utmost importance to me, as I stand behind my work and understand that your satisfaction relies on the completion of each record down to every detail. I have a proven track record of fulfilling detailed tasks and delivering optimal results. I guarantee all 1,600 records will be carefully verified and captured as per the given specifications. Moreover, being ranked in the top one percent signifies my credibility, reliability, and dedication to meeting and exceeding clients' expectations; it’s something I strive for in every project. I assure you that each data point entered will be thoroughly validated and supplemented with as much relevant information as possible. My attention to detail paired with a forward-thinking approach ensures future-proofed results. Lastly, rest assured that your data will be handled responsibly safeguarded. My commitment to confidentiality is unwavering and your trust is valued highly. Choose me for excellence in quality delivery within stipulated timeframe.
€600 EUR in 7 days
6.0
6.0

I got you! I can refine your 1,600-building spreadsheet by measuring footprints in Google Earth, estimating construction years from historical imagery first, capturing current Google Maps tenant names, and documenting confidence clearly for easy auditing. I’m ready to handle the project specifics carefully; I’m young, a fast learner, detail-oriented, and available 24/7. Get the demo first before you pay. A couple of quick questions: Do you already have addresses/coordinates for every building, or should I resolve locations manually where unclear? Also, what polygon measurement format do you prefer for audit proof—Google Earth saved KML/KMZ files, screenshots, or spreadsheet notes only? Let’s chat and discuss the answers so I can start with a small demo sample right away. Kind regards, Haroon Z
€750 EUR in 1 day
5.6
5.6

I understand you need to verify 1,600 building records, specifically their footprint, construction year, and current tenant. My experience with spatial data analysis and leveraging historical imagery for property verification, similar to the precise footprint measurement you require, ensures I can deliver accurate and auditable results efficiently. My approach will involve using QGIS for precise polygon drawing in Google Earth Engine to measure building footprints. For construction year, I'll systematically review Google Earth's historical imagery sequence. If imagery is inconclusive, I'll employ targeted GPT searches and cross-reference with reliable online databases like city property records or business directories for tenant information. All findings will be logged in a structured CSV, detailing the data source and confidence level for each record. What is your preferred format for the final audit trail? Given the specifics of your request, would you prefer a separate column for confidence scores on the construction year, or a brief annotation? I'm available for a quick call to discuss this further and ensure my process aligns perfectly with your audit requirements.
€575 EUR in 21 days
5.1
5.1

I can verify all 1,600 building records with the accuracy and documentation standards you require. I’m experienced with Google Earth polygon measurements, Google Maps business verification, and structured data auditing, so each record will include a precise footprint (m²), a well‑supported construction‑year estimate, and the exact tenant name as shown on Maps. For every building, I’ll draw a clean polygon in Google Earth, confirm the footprint, and log it in your spreadsheet. Construction years will rely primarily on historical imagery; when imagery is inconclusive, I’ll add a short, source‑linked note using verified references. Tenant names will be captured exactly as displayed. Each entry will include a confidence flag using your colour‑coded system. You’ll receive a fully updated spreadsheet with consistent units, complete fields, and clear comments for auditability. If helpful, I can outline the measurement workflow or the year‑estimation method next. Juan Pablo
€500 EUR in 7 days
4.4
4.4

la tour de salvagny, France
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