What Should Be Included in a Prefab House Quotation?

What Should Be Included in a Prefab House Quotation?

A buyer’s checklist for comparing modular building quotes accurately

When you request a quotation for a prefab house or modular building, the price is only one part of the picture. A complete quotation should tell you exactly what you are paying for — what is included, what is optional, and what will affect the final cost. This article explains the items that should appear in a proper modular building quotation, so you can compare suppliers on the same basis.

1. Product Specification

A quotation should describe the unit in detail, not just a model name. Confirm the quotation specifies:

• Unit size and dimensions: exterior and interior dimensions, floor area and height.
• Frame specification: steel frame type and galvanization, which determine structural reliability.
• Wall and roof panels: panel type (EPS, rock wool or PU), thickness, insulation level and fire-rating option.
• Doors and windows: type, size, quantity and glazing option.
• Interior finish: flooring, ceiling and wall lining options.
• Electrical and plumbing: what is pre-installed in the factory and what is required on site.

2. Commercial Terms

The commercial conditions should be stated clearly in the quotation:

• MOQ (minimum order quantity): for most Wanbang products the MOQ is 1 unit, but confirm this for your selected model.
• Lead time: the production time after deposit confirmation. Wanbang’s standard lead time is around 10–15 days, depending on quantity and customization.
• Payment terms: typically T/T with 50% deposit and the balance before shipment, but confirm the terms that apply to your order.
• Validity period: how long the quoted price remains valid.

3. What Is and Is Not Included in the Price

Two quotes can look similar in price but differ significantly in scope. Confirm these items explicitly:

4. Information the Buyer Should Provide

• Unit quantity and type (e.g., flat pack, expandable, foldable or steel structure).
• Intended use (accommodation, site office, camp facility) and required capacity.
• Destination and port, so transport cost can be calculated.
• Site conditions — climate, ground type and whether lifting equipment is available.
• Local requirements — any building standards, insulation or compliance needs for your region.

5. Red Flags in a Quotation

• A price without a specification: if no materials, dimensions or inclusions are listed, the quote is not comparable.
• Vague lead times: production time should be stated in days after deposit, not “as soon as possible”.
• Unclear payment and MOQ: commercial terms should be explicit.
• No mention of transport: shipping and loading assumptions should be visible.

6. Frequently Asked Questions

Q1: Do you charge for customization?
Layout and finish customization is supported according to your drawings. Whether specific changes affect the price depends on the scope of the change — the quotation will itemize included and optional items.

Q2: Is shipping included in the quotation?
Shipping to the destination port is quoted separately based on the destination, quantity and loading plan. The quotation should state loading count per 40HQ container and the transport arrangement.

Q3: What is the minimum order quantity?
For most Wanbang products, the MOQ is 1 unit, so small orders and pilot projects are possible.

Q4: How long is a quotation valid?
Validity is stated on each quotation; it generally reflects current material and logistics conditions.

Ready to request a specification-based quotation? Contact us with your unit quantity, intended use and destination, and our team will provide a detailed quotation with full specifications. You can also review our flat pack modular houses and expandable container houses for reference.