Landed House Construction Cost Calculator Singapore

By Pow Kak WenFounder & Managing Director · Quantity SurveyorPublished 25 September 2026

A single cost-per-square-foot figure rarely represents the complete budget for a landed house. This calculator separates the core building estimate from demolition, site allowances, specialist items, contingency, professional fees and GST.

You choose the construction rate: YuHuang does not present one generic PSF amount as suitable for every house. Use a rate supported by current project information, comparable scope or professional advice.

Free planning tool

Build an indicative landed-house budget

Enter amounts excluding GST. Review every assumption before using or sharing the result.

Proposed construction floor area (sq ft)Use the area definition corresponding to the selected rate. Selected construction rate (S$/sq ft)Confirm inclusions, pricing date, quality and project type. Demolition and enabling works (S$)Include only if excluded from the selected rate. External works and site allowances (S$)For drainage, boundary works, landscaping or site constraints. Specialist items (S$)For example, lift, pool, basement or specialist systems. Other project allowances (S$)Record the purpose separately in your budget notes. Design and construction contingency (%)An editable planning allowance, not a recommendation. Professional and statutory allowance (%)Replace with actual consultant proposals and charges when known. GST rate (%)Singapore's prevailing rate is 9%; confirm applicability to each item.

What the calculator includes

The core estimate is the entered construction floor area multiplied by the selected construction rate. Separately entered works are then added before percentage allowances are calculated. The tool keeps these components visible so a reader can challenge or replace each assumption.

What a PSF rate must define

Whether the area is GFA, construction floor area or another measurement basis
Terrace, semi-detached or detached house type
New build, reconstruction or additions and alterations
Structural system, façade, finishes and M&E standard
Pricing date and expected tender or construction period
Main-contractor preliminaries, overhead and profit
Basement, lift, swimming pool and specialist exclusions
Demolition, ground conditions, restricted access and external works

Costs commonly outside a headline construction rate

Depending on the rate source, exclusions may include land, financing, temporary accommodation, loose furniture, professional fees, authority charges, utility connections, demolition, site remediation, boundary works, specialist equipment and GST. Obtain a written inclusions-and-exclusions schedule before comparing rates.

From preliminary budget to cost plan

An early area-and-rate estimate is useful for feasibility. As the design develops, replace broad allowances with measured quantities, elemental cost plans, supplier information and project-specific risk allowances. Update the pricing date and record every revision.

For broader cost references, review YuHuang's construction unit-rate schedule and pre-tender estimating guide.

GST assumption

The calculator defaults to Singapore's prevailing 9% GST rate. GST applies according to the supplier, supply and transaction circumstances; confirm which amounts are taxable and whether quoted prices are inclusive or exclusive of GST. See the current IRAS GST rate.

Reference and share this calculator

Architects, property professionals and homeowners may link to this transparent budgeting tool. Suggested reference: YuHuang Estimating, Landed House Construction Cost Calculator Singapore.

Need a landed-house budget based on your drawings?

Send the proposed floor areas, drawings, specifications, site information and programme. YuHuang can prepare a measured, project-specific cost plan.

Discuss your requirements

Landed House Construction Cost Calculator Singapore.