USA’s Top Ranked Openings Estimating Services
Precision in our openings estimating services shows clients we care as much about their project as they do. We have a team of expert freelance estimators who have extensive past experience of working on installation of openings, such as doors, windows, skylights, opening frames, grilles, louvers, and vents for residential, commercial, and industrial construction projects.
They carefully analyze the drawing plans to see the types and sizes of doors, windows, and other opening materials. Online certified estimators calculate the quantities of all materials and also count the total labor hours required to complete the work. We use RS Means and our zip code-based pricing data to add the cost per unit with line-item descriptions and deliver it to clients in just 8 to 20 hours. Call us now!
100% Accuracy in Openings Estimating and Takeoff Sheet
We provide accurate bid estimates for openings of construction projects to help contractors bid more and win profitable contracts for their business. We follow the given dimensions in the drawings to ensure everything fits correctly during installation. Our openings estimates help contractors in project planning, resource allocation, procurement, and cost control. Here’s how we do these calculations.
Dimensions and Sizes of Doors
For interior doors, the most common standard widths are 24 inches, 28 inches, 30 inches, 32 inches, and 36 inches. The standard height is usually 80 inches (6 feet 8 inches), with a thickness of 1 3/8 inches. In some cases, for stronger or fire-rated doors, we use 1 3/4 inches for the thickness.
For exterior doors, we work with widths of 30 inches, 32 inches, or 36 inches, while the height typically ranges from 80 inches to 96 inches. Exterior doors are almost always 1 3/4 inches thick. When calculating the costs of French doors, a standard pair usually comes in 60 inches or 72 inches wide, with a height of 80 inches, and a thickness of 1 3/4 inches.
Door Frame Calculations
The frame depth for interior doors is typically 4 9/16 inches, while for exterior doors, it is 6 9/16 inches to account for thicker walls or insulation. The frame width will generally match the door width, though we may add extra space if needed for trim, finishing, or specific frame designs.
Window Sizes
We follow the dimensions specified in the drawing plans to ensure the right fit for windows. For single-hung and double-hung windows, we typically use widths of 24, 36, 48, or 60 inches and heights of 36, 48, 60, or 72 inches. Casement windows usually have widths of 24, 36, or 48 inches and heights of 36, 48, or 60 inches. Sliding windows range from 36 to 72 inches in width and 36 to 60 inches in height. Awning windows are generally sized 24 to 36 inches in both width and height. By following these measurements, we ensure a seamless fit in your space.
Rough Opening Calculations
When we calculate the rough opening for installation, we make sure there’s extra space to fit the frame and trim. For interior doors, we typically add 2 inches to the width and 2 1/2 inches to the height of the door. For example, for a 36” x 80” door, the rough opening would be 38” x 82 1/2”. For exterior doors, we add 2 1/2 inches to both the width and height. So, a 36” x 80” exterior door will require a rough opening of 38 1/2” x 82 1/2”. For windows, we add about 1/2 inch to 1 inch around the window size for the rough opening. For example, for a 36” x 48” window, the rough opening would be 36 1/2” x 48 1/2”.
Trim and Casing Sizes
When calculating trim, standard casing widths for doors and windows in American homes typically range from 2 1/4 inches to 3 1/2 inches. Baseboards usually range from 3 1/4 inches to 5 1/4 inches high, depending on the style of the home and the you are aiming for.
Range of Openings Material Takeoffs and Cost-Estimating Services
- Bid Filling
- Bid Estimates
- Design Estimates
- Preliminary Estimates
- Cost Projection Models
- Material Takeoffs
- Feasibility Study
- Quantity Takeoffs
- Initial Guesses
- Consultation
- Bid Submission
- Budget Estimates
- Conceptual Estimates
- Insurance Claims
- Value Engineering
Residential Openings Estimating Services
We work with clients as their full-time estimator and provide them accurate openings estimates for residential projects. Our estimators have experience of estimating openings costs of condominiums, high-rise residences, apartments, and many other projects with 100% accuracy.

The Agnes Apartments
132 Yale Ave, Jersey City, NJ 07304, United States
Commercial Openings Quantity Takeoff Services
Work with our team of online estimators for commercial openings takeoff services and save up to 70% of the costs which you spend for in-house estimation team and buying the latest estimation tools. Moreover, we provide estimates and takeoffs within 8 to 24 hours to meet bid timelines.

Lyric Tower Office Building
440 Louisiana St, Houston, TX 77002, United States
Industrial Openings Cost Estimation Services
We are experts in calculating the cost of industrial openings, such as doors, window, frames, louvers, and other openings that facilitate access, ventilation, natural light, and workflow coordination. Call us now for a free consultation or upload plans to get a free quote in 5 to 10 minutes.

LA Warehouse Express
2100 E 49th St, Vernon, CA 90058, United States
Types of Doors We Estimate for Contractors and Builders
- Vinyl Door
- Aluminum Door
- Bronze Door Frame
- Pressure Resistant Door
- Thermal Shielding Door
- Sliding, Folding, or Swing Door
- Folding Door
- Wooden Door
- Cooling Door
- Penel Door
- Access Door
- Swing Door
- Plastic Door
- Steel Door
- Hangar Door
- Metal Door & Frame
- Fiberglass PVC Door
- Thermal Shielding Door
- Cooling Door Sliding Door
Why Hire Us to Outsource Openings Estimating Services in the USA?
If you are looking for the best openings estimating services near in the USA, then meet the estimation team of Takeoff Sharks. We available to prepare bid-winning opening estimates in every state of USA, such as Alabama, Georgia, California, Florida, Texas, Montana, Washington, Utah, Ohio, Iowa, Illinois, South & North Carolina, Colorado, and many others. We are standout in the hundreds of openings estimation firms because:
- Team of online dedicated openings estimators
- Following regulations and local building codes
- 100% accuracy in all openings bid estimates
- Quick turnaround time of 8 to 24 hours
- Full customer satisfaction guaranteed!
- Zip code-based pricing to avoid cost fluctuations
Get Started with Takeoff Sharks by Following These Steps
Upload Project Plans
Send the openings project plans in any format to [email protected] or upload them by using the Contact Us form.
Free Quote in 5 to 10 Minutes
Our certified openings estimators will review your project plans and send you a free quote in 5 to 10 minutes.
Pay the Invoice
Upon approval, our account team will issue an invoice. You can easily pay it with a debit card, credit card, bank transfer, or PayPal.
Receive Estimate
You will receive a complete opening estimate or takeoff in an Excel spreadsheet or desired format, along with colored marked-up plans.
FAQ's
What Types of Projects Can Benefit from Openings Estimating Services?
Our openings estimating services are applicable to various types of projects, including commercial, residential, and industrial construction. Any project that involves significant openings can benefit from our expertise, ensuring accurate cost assessments.
Can Your Openings Estimating Services Help Reduce Project Costs?
Yes, by providing precise estimates, our services help contractors identify potential cost-saving opportunities. Accurate assessments allow for smarter material purchasing and efficient labor allocation, ultimately reducing overall project costs.
What Information Do You Need from Me to Provide an Openings Estimate?
To provide an accurate estimate, we typically require project blueprints, specifications, and any other relevant documents. Additionally, insights into your preferences for materials and design will help us tailor the estimate.
Do You Offer Openings Estimating Services for Renovation Projects?
Yes! Our services are ideal for both new constructions and renovations. We assist contractors in accurately estimating openings for various renovation scenarios, ensuring successful project completion.
Feedback from Customers
Our team used their estimating services for the Seattle Space Needle. Their attention to detail helped us stay within budget. They provided accurate openings estimates, which made it easy to plan our work.
Their estimating services really set them apart. They were quick and provided great support. I felt confident in the estimates they gave, which made our project smoother. I would recommend them to anyone!
Working with them made my job so much easier! Their estimates were timely and precise. The team provided great insight into costs. I will use their services again!
I turned to them for help with the Walt Disney Concert Hall. They delivered amazing estimates that were both thorough and easy to understand. It made a big difference in our planning and budgeting.
The team was fantastic in providing estimates for my project. They were quick, thorough, and very professional. I was pleased with the accuracy and clarity. I would definitely recommend their services!
I found their estimates to be very accurate. The team communicated well and answered all my questions. This service helped keep the project organized and on track.