Receiving 3 quotes from contractors and choosing the lowest one is one of the most common and costly mistakes homeowners make. Quotes are not comparable unless they are based on identical scope, specifications, and materials. This guide teaches you how to compare them the right way.
Why the Lowest Quote is Often a Trap
A low quote usually means items are missing from scope, material grades are not specified, or the contractor is planning to escalate costs mid-construction. By the time you notice, you have already paid mobilization amounts and are committed.
Discuss Your Project
Tell us about your project and we'll be in touch.
Step 1: Make Sure All Quotes Are Based on the Same Scope
Before comparing numbers, ensure every contractor quoted for the same built-up area, same floors, same material grades, and same scope items. A quote for "construction" without specifying tile type, electrical brand, or steel grade is not a comparable quote.
Step 2: Check for Missing Line Items
- ▸Temporary works: site cleaning, shuttering, scaffolding
- ▸Soil testing costs
- ▸Foundation type (footings vs. piles)
- ▸Waterproofing (terrace, bathrooms, sump)
- ▸External work: compound wall, drive, drainage
- ▸Electrical: mains wiring, DB board, earthing
- ▸Plumbing: complete system including overhead tank
Step 3: Verify Material Specifications
For every major material, the quote should specify: Concrete grades (M20, M25, M30) for each element. Steel grade (Fe500D preferred). Cement brand (or "equivalent brand" should be challenged). Tile brands and grade. Wire brands and specification.
Step 4: Understand Payment Terms
Milestone-based payments tied to construction stages are safer than time-based or demand-based payments. Ensure the payment schedule is linked to verifiable completion — not just calendar dates.
Step 5: Get a BOQ Audit
If you have received quotes and are confused about how to compare them, Buildogram's BOQ review service will analyze each quote and provide a clear comparison of scope, specifications, and rates.
📋 Quick Checklist
FAQs
Should I always choose the middle quote?
Not necessarily. The middle quote may be as incomplete as the lowest. Evaluate scope and specifications first. The right choice is the most transparent and complete quote, not the median price.
Can Buildogram review multiple contractor quotes for me?
Yes. Upload your quotes to Buildogram's BOQ audit service and we will provide a comparative analysis identifying scope gaps, specification differences, and rate benchmarks.
Explore Buildogram Marketplace
Need expert guidance?
Talk to our structural engineers for project-specific advice.