AVENTRIX REALTY · DEVELOPMENT ADVISORY
Joint Venture Feasibility Calculator
Understand the residual value of your land, estimate development economics, and compare a proposed Landowner–Developer sharing structure with clarity.
Residual land valuation
Project cost & GDV
Sharing recommendation
Start Joint Venture Calculation
Land-First Project Feasibility
Aventrix Realty — Master Joint Venture Feasibility Calculator
Estimate landowner contribution, developer investment, project value and the economics behind different sharing proposals.
Decision-support model — not a standard ratio. The calculator starts with land value and development costs. It does not certify FSI, saleable area, valuation or a fair JV ratio. Use verified site-specific planning inputs before making an offer.
Stage 1 — Landowner contribution and site details
This title will appear on the separate PDF proposal.
Enter the property location to identify the proposal.
1 ground = 2,400 sq.ft. Confirm the registered/title extent and survey dimensions.
No pre-entered land market rate is required. The model derives an indicative residual land value after entering sale price, FSI, saleable area, costs and target developer profit.
Record the legally qualifying public road width; do not rely only on a visual estimate.
Final category depends on the proposed design and applicable rules.
Enter only a supported estimate. Verify road widening, reservations and other applicable deductions.
Stage 2 — Permissible FSI and estimated saleable area
FSI is not determined by road width alone. Confirm jurisdiction, use zone, building category, road width/length, setbacks, exclusions, height, parking, fire access and current amendments with a licensed architect and the competent authority. FSI is a manual, unverified modelling input here.
Enter the FSI applicable to this specific site. Default 2.00 is only a placeholder—not an entitlement or automatic road-width result.
Keep at zero unless eligibility and the allowable premium percentage are verified.
Design-dependent modelling factor only. FSI-counted area and saleable area are not automatically identical.
Use a realistic rate for the locality, unit mix, specification and sales evidence.
Stage 3 — Builder's investment and project costs
Enter a project-specific contractor/build cost. Choose below whether the rate applies to FSI-counted area or saleable area.
Use the same area basis as the builder's ₹/sq.ft. quote.
Design, approvals, finance, marketing, services, contingency and other costs. Avoid double-counting costs entered separately.
Enter an estimate only when known; verify current charges with the authority.
Any extra costs not already included above, such as demolition, utility upgrades or exceptional site works.
Commercial target input, not a universal standard or guaranteed margin.
The calculator derives residual land value from project revenue less builder costs and target profit. This is an indicative negotiation benchmark, not an independent market valuation. Actual JV sharing also depends on risk, funding, land title, time, guarantees, tax and negotiated obligations.
Stage 4 — Deposits and automatic sharing recommendation
The calculator will derive an indicative starting ratio from residual land value supported by sale revenue, FSI/saleable area, builder investment, target profit and deposit treatment. No market land rate is entered in advance.
Choose how the payment is treated in the commercial proposal.
Enter the actual proposed amount.
Used only to estimate builder funding cost for a refundable deposit.
Used for indicative funding-cost estimate; not a contract term.
RECOMMENDED STARTING RATIO (INDICATIVE)Calculating…
Based on current project assumptions.
Market-value benchmark: — · Residual-value benchmark: —
Deposit impact: No deposit entered.
Stage 5 — Review and adjust sharing proposal
The slider starts from the calculator's automatically derived residual-value recommendation instead of assuming 50:50. You can adjust it to test a negotiated offer. Equal ₹/sq.ft. allocation is assumed for this comparison; actual unit mix and floor-level values can differ.
Landowner share50%
Developer share50%
Indicative gross value ₹0
Indicative gross value ₹0
Developer surplus after entered investment₹0
Enter assumptions to assess the proposal.
Developer surplus here = developer's allocated gross sales value minus entered developer investment. It is before income tax and any omitted cost, sales timing, unsold stock, GST/transaction treatment or project-specific risk not included in the inputs.Developer share required to cover investment + target profit—
Sharing scenario comparison
| Landowner : Developer | Landowner area | Developer area | Landowner gross value | Developer gross value | Developer surplus after investment |
|---|
Regulatory, valuation and commercial validation required.
FSI is not determined by road width alone. Verify the applicable CMDA/local jurisdiction, use zone, legally qualifying road width and length, site extent, setbacks, road widening, FSI exclusions, premium FSI eligibility and charges, parking, height, fire access, approvals and current amendments with a licensed architect and competent authority. Validate land market value, construction scope, financing, taxes and agreement terms with qualified professionals.
This is an exploratory decision-support tool, not an approved or final Aventrix Realty JV methodology, a valuation, planning approval, financial/legal advice, offer or guarantee of a sharing ratio. Ratios are outputs for negotiation and must be independently assessed before reliance.
Official starting point for verification: Tamil Nadu Combined Development and Building Rules, 2019 and CMDA Development Regulations. These must be checked against amendments and the exact site.
