Ground-Up Development Underwriting for REPE

Ground-up development is the highest-risk, highest-return strategy in real estate private equity. There's no in-place NOI to capitalize, no existing cash flow to service debt, and no stabilized value to underwrite against at acquisition. You're buying land (or entitlements) and betting that you can deliver a finished, leased asset at a cost below what the market will pay for it stabilized. This guide covers the full development underwriting workflow — from land basis through construction, lease-up, and exit — with the specific traps that break development models in interviews.

The development thesis in one sentence

Development Profit = Stabilized Value − Total Project Cost

If stabilized value (forward NOI capitalized at a market exit cap rate) exceeds everything you spent to get there (land + hard costs + soft costs + financing + carry), you have a viable development. Everything in the model exists to test whether that spread is wide enough to compensate for execution risk.

Phase 1: Land and entitlements

Land basis

Land Cost = Purchase Price + Closing Costs + Entitlement Costs

Entitlement costs include zoning approvals, environmental remediation, utility connections, and legal fees to get the project entitled for the intended use. Entitlement risk is real — a project that can't get zoned for the planned density or use has zero development value beyond raw land.

Key land metrics

| Metric | What It Tells You | |--------|------------------| | Land cost per buildable SF | Basis relative to finished product value | | Land as % of total project cost | Typically 10%–20% for multifamily; higher for infill | | Entitlement timeline | Months/years of holding cost before construction starts |

Phase 2: Construction budget

The construction budget is the largest cost line and the largest source of model error:

Total Project Cost = Land + Hard Costs + Soft Costs + Contingency + Developer Fee + Financing Costs + Carry Costs

Hard costs

Direct construction: materials, labor, general contractor. Typically quoted as $/buildable SF:

| Asset Type | Typical Hard Cost Range ($/SF) | |-----------|-------------------------------| | Garden multifamily | $150–$200 | | Mid-rise multifamily | $200–$280 | | High-rise multifamily | $280–$400+ | | Industrial/warehouse | $80–$150 | | Self-storage | $50–$90 |

Always include a contingency (5%–10% of hard costs) for cost overruns — the single most common development budget failure.

Soft costs

Architecture, engineering, permits, legal, insurance during construction, marketing, and leasing commissions. Typically 10%–15% of hard costs. Don't understate these — they're real cash outflows during the construction period.

Developer fee

The sponsor's compensation for managing the development: typically 3%–5% of total project cost, often paid at completion or capitalized into the budget.

Financing costs

Construction loan origination fees, interest during construction (IDC — interest during construction), and permanent loan fees at stabilization/refi.

IDC = Average Outstanding Construction Loan × Interest Rate × (Construction Period in Years)

During construction, the loan is drawn incrementally as costs are incurred. IDC is capitalized into the project cost (added to the loan balance), not paid from operations — because there are no operations yet.

Phase 3: Construction timeline and draws

Model construction as a monthly or quarterly draw schedule:

Month 1–3:   Site work, foundation (20% of hard costs)
Month 4–9:   Vertical construction (60% of hard costs)
Month 10–12: Finishes, punch list (20% of hard costs)
Month 13–18: Lease-up begins as units deliver
Month 19–24: Stabilization (95% occupancy)

Each draw increases the construction loan balance and accrues IDC. The total construction loan at completion = hard costs drawn + soft costs + capitalized IDC.

Phase 4: Lease-up and stabilization

Unlike value-add (which starts from partial occupancy), ground-up development starts at zero occupancy:

Lease-Up Assumptions:
  Units delivered per month: 8–15 (depends on building size)
  Absorption rate: units leased per month after delivery
  Concession period: 1–2 months free rent typical for new product
  TI/LC: often minimal for new construction (already built to spec)
  Stabilization target: 95% occupancy
  Time to stabilization: 12–18 months after first delivery

Model revenue month-by-month during lease-up. Year-1 revenue is not Units × Market Rent × 12 — it's the sum of actual collections from units leased at various points during the year.

Phase 5: Debt sizing — LTC, not LTV

Development deals are sized on Loan-to-Cost (LTC), not LTV, because there's no stabilized value until the project is complete:

Construction Loan = Total Project Cost × LTC % (typically 55%–70%)
Equity Required = Total Project Cost × (1 − LTC %)

Construction loans are typically:

• Interest-only during construction (no principal amortization)
• Short-term (24–36 months) with extension options
• Recourse or partial recourse to the sponsor (unlike stabilized agency debt)
• Converted to permanent financing at stabilization (the "takeout" loan)

The takeout/refi is a major return driver: you replace expensive construction debt with cheaper permanent debt once the asset proves lease-up.

Permanent Loan = Stabilized Value × LTV % (typically 60%–70%)
Refi Proceeds = Permanent Loan − Construction Loan Payoff
Equity Returned at Refi = Refi Proceeds − Any Remaining Equity in Deal

Phase 6: Returns calculation

Development yield (unlevered)

Development Yield = (Stabilized NOI ÷ Total Project Cost) − 1

Also called "yield on cost." A development yield of 6.5% on a project cost with a 5.0% exit cap implies a 150 bps development spread — the profit margin embedded in the project.

Development Spread = Yield on Cost − Exit Cap Rate

A wider spread (200+ bps) provides cushion for cost overruns or cap rate expansion. A thin spread (under 100 bps) leaves little room for error.

Levered returns

Equity Invested = Total Project Cost × (1 − LTC %)
Cash Flows = Equity draws during construction + refi proceeds + operating distributions + exit proceeds
Levered IRR = IRR(equity invested, timed cash flows)
Equity Multiple = Total Distributions ÷ Total Equity Invested

Development deals often show two return events: refi proceeds (return of most equity at stabilization) and exit proceeds (profit at sale). The refi is what makes development IRR attractive — you get most of your equity back while still owning the asset.

Sensitivity analysis: what kills a development deal

| Scenario | Impact | |----------|--------| | Hard costs +10% | Directly increases project cost; compresses development spread | | Lease-up 6 months slower | More IDC, more carry costs, delayed refi | | Exit cap +50 bps | Reduces exit value and refi proceeds | | Absorption 30% slower | Delays stabilization and permanent financing | | LTC reduced 5 points | More equity required; lower levered returns |

Run all five on every development model. A deal returning 25% IRR in the base case but losing money under a 10% cost overrun is a very different risk profile.

Common interview questions

"Walk me through a development deal." Land basis → construction budget (hard + soft + contingency) → draw schedule → lease-up timeline → LTC sizing → stabilization → refi → exit. Hit these phases in order.

"Why LTC instead of LTV?" There's no stabilized value to capitalize at acquisition. The lender sizes against total project cost because that's the only measurable denominator until the asset is built and leased.

"What's yield on cost?" Stabilized NOI ÷ total project cost. It's the unlevered return embedded in the development. Compare to exit cap rate to get the development spread.

"What's the biggest risk in development?" Cost overrun combined with lease-up delay. Both increase total project cost and push out the refi/exit, compressing returns. A project that costs 15% more and leases up 9 months late can turn a 25% IRR into a single-digit return or a loss.

"How is development different from value-add?" Value-add starts with an existing asset generating some cash flow. Development starts from dirt with zero income, requires construction financing, and has binary execution risk (the building must get built, leased, and refinanced). Higher return target compensates for higher risk.

The takeaway

Development underwriting is a phased cash flow model with no stabilized starting point. The skill is building a credible construction budget, modeling lease-up month-by-month, sizing debt on LTC, and stress-testing the two things that kill deals (cost overruns and lease-up delays). Get the phase structure right and the rest is the same cap rate bridge — just with more zeros before the first dollar of revenue.