700mm Double Wing Expandable House: Specifications, Dimensions, and Applications
A 700mm Double Wing Expandable House is a transportable modular building whose central section can be expanded by opening two side wings. The term “700mm” should not be treated as a confirmed overall building dimension: it may refer to a model designation or a particular component, so buyers should verify its meaning with the supplier. Overall dimensions, usable floor area, materials, and utilities depend on the selected design. At Hongshun Guangju, we recommend confirming a dimensioned drawing and specification sheet before comparing offers or planning a site.
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This guide explains what to check, how to match an expandable house to an application, and what information to provide when requesting a quotation. It is intended for project owners, contractors, distributors, and procurement teams evaluating a compact modular building. Because configurations vary, examples in this article are planning prompts rather than guaranteed product specifications.
Key Takeaways
- Confirm what “700mm” means in the product name before treating it as a measured dimension.
- Request both transport and fully expanded dimensions, plus a floor plan showing usable space.
- Specify intended use, site conditions, utilities, finish, and local compliance requirements before comparing quotations.
- Ask the supplier to confirm packing, installation scope, order quantity, production schedule, and shipping arrangements in writing.
Who This Guide Is For
This guide is for buyers considering an expandable unit as a site office, temporary accommodation, sales room, guard station, or other small modular space. It is also useful for importers and project teams who need to compare suppliers using a consistent checklist. The right configuration depends on occupancy, climate, duration of use, access to the site, and the level of interior fit-out required.
How a Double Wing Expandable House Works
Basic concept and layout
A double wing expandable house has a central structural section and two side sections that open to create a larger usable footprint. In its transport configuration, the wings are folded or secured alongside the center, depending on the design. After delivery, the unit is positioned and expanded according to the manufacturer’s installation method. Buyers should confirm whether lifting equipment, anchoring, utility connections, or local contractors are required.
The central section typically serves as the main structural and service zone, while the expanded areas provide additional room. However, the exact arrangement of doors, windows, partitions, and services is model-specific. A floor plan should identify both the folded transport condition and the open, in-use condition so that transport planning and room planning are not confused.
Specifications and Dimensions to Verify
Transport and expanded dimensions
Ask for the unit’s external length, width, and height in both transport and expanded configurations. Also request internal clear dimensions, since wall thickness, framing, and partitions affect the usable floor area. The “700mm” in the product name alone does not establish any of these measurements, so it should be clarified in writing.
Check the folded width against the transport route, vehicle or container plan, access gates, and site approach. For the expanded layout, confirm the space needed for the wings to open, including nearby walls, fences, overhead obstructions, and service lines. A dimensioned drawing is more useful than a headline size because it can show opening direction, door swings, and the position of support points.
Structure, envelope, and interior finish
Request details of the frame material and section, floor build-up, roof construction, wall panels, glazing, and corrosion protection. Panel core and thickness can influence insulation, weight, and acoustic performance, but these properties should be confirmed for the exact configuration rather than inferred from a product category. If the unit will be used in a hot, cold, humid, or coastal environment, describe those conditions and ask which options are suitable.
Interior fit-out may include flooring, lighting, wiring, outlets, plumbing, bathroom fixtures, cabinets, or partitions. These items are not necessarily included in a base quotation. A useful project brief can state a target clear doorway of 900 mm and a preferred interior ceiling height of 2.4 m, for example, but these are buyer-defined planning examples—not confirmed dimensions of a Hongshun Guangju model.
Utilities and compliance
List the electrical supply available at the site and the intended equipment load before choosing a wiring package. Voltage, frequency, plug type, and protection devices vary by destination, so buyers should request a configuration that can be reviewed against local requirements. For plumbing, identify water source, drainage method, and whether a bathroom or kitchenette is required.
Building, fire, electrical, and transport rules can differ by country and project. Ask the supplier what drawings and technical documents are available, then confirm with the local authority or qualified professional which approvals apply. Do not assume that a modular building is exempt from local permitting or inspection.
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Applications and Configuration Matching
Common project uses
Expandable houses can be considered for construction-site offices, temporary staff rooms, security or reception points, project accommodation, and remote workspaces. A room used for administration may prioritize daylight, data access, desks, and quiet separation. Accommodation may instead require sleeping layouts, ventilation, privacy, and bathroom planning.
For a sales office or visitor facility, prioritize an entrance that is easy to identify, suitable window placement, and a layout that supports customer flow. For a guard station, consider sightlines, access control, and the placement of communication equipment. In each case, the intended use should guide the layout instead of assuming that one standard configuration will suit every project.
Materials and options
Available material and finish options may vary by supplier and order. Buyers can ask about frame treatment, panel construction, window type, floor finish, interior lining, and exterior color. Where customization is important, request a written list separating standard items from optional upgrades, and ask whether a change affects dimensions, weight, price, or production timing.
Buyer Selection Framework
Define the project before comparing prices
- Set the use case: State the number of occupants, room functions, expected use period, and whether the unit is for work, accommodation, or public access.
- Measure the site: Record the available footprint, access route, ground condition, overhead clearance, and space required to open both wings.
- List required specifications: Identify dimensions, doors, windows, insulation expectations, electrical needs, plumbing, finishes, and climate considerations.
- Confirm delivery and installation: Clarify packing dimensions, lifting method, unloading responsibility, installation steps, and site preparation requirements.
- Compare like for like: Check that each quotation includes the same configuration, accessories, documents, packaging, and delivery scope.
Common mistakes to avoid
A frequent sourcing mistake is treating a model name as a complete dimensional specification. Another is comparing a fully fitted unit with a basic shell based only on headline price. Buyers should also avoid finalizing transport or foundation plans before receiving confirmed drawings and shipping dimensions.
Do not assume that delivery includes unloading, assembly, utility connection, or on-site commissioning. These responsibilities should be recorded in the purchase agreement or quotation. If the unit will be installed in a region with specific wind, snow, fire, or energy requirements, raise those needs before production rather than after delivery.
Pricing, Minimum Order Quantity, and Lead Time
Pricing depends on the selected dimensions, structural and panel specification, interior package, customization, order quantity, packaging, and shipping destination. A base unit and a unit with electrical, plumbing, bathroom, or furniture options may have different costs, so request an itemized quotation. Import duties, inland transport, unloading, foundations, and site work may be separate from the supplier’s quoted product price.
Minimum order quantity and production lead time should be confirmed for the exact project and destination. They can vary with customization, material availability, production planning, and order size, so a general estimate should not be treated as a commitment. Ask the supplier to state the quotation validity, payment milestones, production schedule, inspection arrangements, and estimated shipping plan in writing.
Supplier Evaluation Checklist
- Can the supplier explain exactly what “700mm” refers to and provide a dimensioned drawing?
- Does the quotation distinguish transport dimensions from expanded dimensions and list included items?
- Are material descriptions, finish options, utility scope, and customization limits clear?
- Can the supplier explain packing, lifting, installation responsibilities, and documents available for review?
- Are price, minimum order quantity, production timing, payment terms, and delivery scope stated clearly?
Hongshun Guangju supports B2B buyers by discussing project requirements and clarifying configuration options for expandable houses. To help us assess a request, share the destination country, intended application, required room layout, site dimensions, utility needs, and target order quantity. We can then confirm which specifications and commercial details need to be finalized for a project quotation.
Conclusion: Confirm the Drawing Before You Order
A 700mm Double Wing Expandable House can provide a compact, expandable modular space for suitable commercial and project applications, but the product name does not replace a verified specification. Confirm what “700mm” means, compare folded and expanded dimensions, and match the structure, fit-out, and utilities to the site and intended use. Before committing, review a dimensioned drawing and a written quotation that clearly identifies inclusions and responsibilities.
Your next step is to prepare a short project brief with the intended use, site measurements, destination, required options, and order quantity. Send it to Hongshun Guangju to discuss a suitable configuration and confirm the relevant technical and commercial details. This process makes supplier comparisons more reliable and helps reduce avoidable issues during transport, installation, and use.