Investigate structural and envelope conditions, historic scope, lawful units and lead-safe requirements before calling the project a cosmetic renovation. This hypothetical model shows how a lower sale, additional work and delay can absorb the apparent acquisition-to-resale spread.
Entirely hypothetical educational scenario. No actual property, client, contractor, lender approval, market quote or completed return is represented.
Work through this decision
- Resolve the property and approval assumptions before accepting the base case.
- Obtain written scope and market evidence matching the finished legal product.
- Recompute combined downside and peak cash before committing capital.
Evidence to collect
| Evidence | How to use it |
|---|---|
| Scope | distinguish base work, unknown conditions and approval-dependent changes. |
| Exit | document comparable legal use, ownership and condition. |
| Cash | reconcile contractor payments, loan draws, maturity and final payoff. |
The mistake to catch before committing
The all-in purchase/project allowances below are modeling assumptions. Other acquisition/soft costs must be itemized in a real deal, including actual taxes. Financing is an assumed total expense, not principal; the selling allowance is illustrative and is not a DC statutory tax formula.
Base case and combined downside
Illustrative assumptions only. These numbers were selected to demonstrate a decision, not measured from a DC transaction. Obtain property-specific quotes, taxes, market evidence and professional advice.
| Cost / outcome | Base | Downside |
|---|---|---|
| Purchase | $280,000 | $280,000 |
| Renovation | $220,000 | $255,000 |
| Other acquisition / soft costs | $45,000 | $45,000 |
| Financing expense | $45,000 | $45,000 |
| Nonfinancing carry + added delay cost | $15,000 | $33,000 |
| Assumed selling allowance | 6.5% = $46,800 | 6.5% = $42,900 |
| Sale | $720,000 | $660,000 |
| Total modeled cost | $651,800 | $700,900 |
| Pretax profit / loss | $68,200 | -$40,900 |
The downside changes sale price, renovation spending and a combined additional carry/financing allowance. It is a stress case, not a probability forecast. The displayed dollar values are rounded; the calculation retains exact values.
Connect the scope to DC approvals and closeout
Open the DC agency background for this decision
Use the current DOB permit instructions to identify the application route for the actual work and building use. One- and two-family work and commercial projects do not always follow the same intake route. A contractor estimate is not evidence that required permits, trade reviews or inspections are included. Ask the designer and contractor to identify the approval and inspection dependencies in writing.
DOB warns that its integrated 2017 code books do not show amendments adopted after May 29, 2020; Title 12 DCMR is the official text to confirm. A code modernization announcement does not itself establish which provisions govern your application. Record the governing edition and amendments on the design basis.
| Control point | Record to retain |
|---|---|
| Before work | Issued scope, approved drawings, responsibility for each trade and any conditions |
| Before concealment | Required inspection result, approved revision if conditions differ, and dated photos |
| Before final payment | Final results, unresolved deficiencies, warranties, manuals and turnover records |
Sources: DC Department of Buildings: DC construction codes and official amendments; DC Department of Buildings: Permitting in the District of Columbia; DC Department of Buildings: Construction inspection services.
Your evidence worksheet
Record what you found and what remains open. Nothing is submitted or saved automatically. Download a local copy to keep your work before leaving this page. A selected status is your note, not an agency approval.
Sources & update notes
Source review dated October 24, 2026. Access notes distinguish readable guidance from portal entry points. Our calculations are hypothetical analysis, not agency findings or lender offers.
- Building permits for historic propertyDC Office of Planning · Guidance reviewed 2026-10-24
- RRP requirements for for-profit residential renovatorsUS Environmental Protection Agency · Guidance reviewed 2026-10-24
- DC historic districts and boundary mapsDC Office of Planning · Guidance reviewed 2026-10-24
- DC construction codes and official amendmentsDC Department of Buildings · Guidance reviewed 2026-10-24
- Permitting in the District of ColumbiaDC Department of Buildings · Guidance reviewed 2026-10-24
- Construction inspection servicesDC Department of Buildings · Guidance reviewed 2026-10-24
October 24, 2026: Replaced the earlier outline with topic-specific workflow, evidence questions, decision tests and primary-source notes.
Report a correction or changed source. A source-check date does not represent independent professional sign-off.