The appraisal is most useful while you still have decisions available. I would rather identify a value gap before a major nonrefundable builder deposit than try to solve it after the project is underway.
What the appraiser is valuing
The assignment concerns the proposed completed real estate under stated assumptions and conditions. It is not simply a reimbursement estimate for the contractor's price or a forecast that your home will sell for more when work ends.
Fannie Mae's guidance allows information such as plans, specifications or an existing model to identify proposed construction and addresses later completion evidence. [1] Provide the lender with a complete description of what will be built, including relevant site improvements.
Separate the appraiser's value opinion from the lender's program decision. A satisfactory value does not by itself approve the borrower, builder, legal use or construction contract. Those reviews must fit together.
Start with the construction financing hub for the full approval and draw sequence. This page concentrates on value shortfalls and decisions they can change.
The package should describe one consistent home
Collect the site plan, floor plans, dimensions, room and bath counts, living area, elevations, materials, quality and major features. Include the builder contract, allowances and site work scope requested for the assignment.
Reconcile contradictory versions before ordering the appraisal. A plan showing a larger home than the signed budget, or a contract omitting a major feature shown in renderings, leaves uncertainty about the actual project.
Describe site improvements such as necessary access, utilities or other included work. Also separate personal property or owner choices that may not contribute to real estate value in the way you expect. Ask the lender what additional evidence the appraiser needs rather than assuming a marketing rendering establishes the specifications.
If the plans change after the report, tell the lender. The appraisal and completion review should not rely on a house that is no longer the one being built.
Cost is not the same as market value
Construction cost reflects the work, materials, site, contract terms and builder economics. Value reflects the property and market evidence under the appraisal assignment. They can diverge for ordinary reasons without proving anyone made a mistake.
An unusually difficult site can require expensive work that buyers do not reward dollar for dollar. Highly customized finishes can cost more than the local market supports. A house can also be substantially different from nearby homes, making comparisons harder.
The right response is to investigate the cause. A factual error needs correction. An unsupported market assumption needs evidence. A design that costs more than its supported value may require an equity or design decision rather than another request to raise the number.
How a lower value changes the cash required
Consider a hypothetical $780,000 accepted total project cost. Assume the lender limits financing to 80% of the lower of that cost or accepted completed value, and no other test is tighter. These are scenario assumptions, not a universal construction rule.
With an $825,000 accepted completed value, the cost basis is lower, so modeled proceeds are $624,000 and required project equity is $156,000.
If the appraisal is instead $740,000, modeled proceeds fall to $592,000 and project equity rises to $188,000. That is $32,000 more equity before costs outside the calculation and required reserves.
| Scenario | ** Basis under the assumed rule** | ** Maximum loan** | ** Project equity** |
|---|---|---|---|
| Value $825,000 and cost $780,000 | $780,000 | $624,000 | $156,000 |
| Value $740,000 and cost $780,000 | $740,000 | $592,000 | $188,000 |
If you already own the lot, determine how much of that required equity is satisfied by accepted net land equity and how much must be new cash. The land financing guide addresses that separate calculation.
Cutting cost may help without fixing value
Return to the lower value scenario. If an approved change reduces cost from $780,000 to $770,000 while accepted value remains $740,000, the same assumed loan stays $592,000. Required project equity falls to $178,000, a $10,000 cash improvement.
But suppose the change also lowers accepted value to $720,000. At the assumed 80% limit, proceeds become $576,000 and equity is $194,000. The project costs $10,000 less but requires $6,000 more equity than the original low value scenario.
That is why I would ask about the likely financing effect before reducing useful area or changing the home's character. The builder can price a saving. The lender determines what revised appraisal and approval are required, and the value conclusion still needs support.
Use the cost overrun and change order guide to document the new scope and payment obligations. Value and cost need to be updated together.
Review the report before requesting reconsideration
Check the property description against approved plans and the site. Review apparent factual differences, omitted material features, relevant sales evidence and explanations you do not understand.
Ask the lender for its borrower reconsideration of value process and required information. For the cited Fannie Mae framework, one borrower initiated ROV is permitted per appraisal, and the submission can include up to five additional comparable properties with sources and an explanation of relevance. [2]
Keep the request focused. Identify the specific unsupported or inaccurate point and explain why the new evidence matters. A list of expensive homes without an explanation of similarity is less useful than a smaller set of relevant evidence.
If the concern involves prohibited discrimination or unacceptable practices, identify it through the lender's process as well. The review should address the reliability and support for the report, not merely the amount needed for the loan.
What reconsideration can and cannot establish
A reconsideration can lead to correction or further review. It does not promise a higher value or guarantee approval. A correction can also leave the value unchanged if the error does not affect the market conclusion.
Fannie Mae's guidance requires material and substantive grounds for changing a value opinion and directs lenders to rely on the most reliable appraisal rather than simply the highest. [2] The lender controls whether additional review or a replacement report is appropriate under its obligations.
Avoid assuming that paying for another report gives you the right to choose the larger value. Ask the lender what process is permitted and what issue a further report would address. That is a more useful question than shopping for a number that matches the budget.
A timeline that preserves your choices
| Stage | ** Valuation task** | ** Decision still available** |
|---|---|---|
| Before major deposits | Compare intended scope, budget and available cash | Choose an affordable design and contract protection |
| Before appraisal order | Reconcile the plans and supporting package | Correct missing or inconsistent project information |
| After receiving the report | Review facts, financing effect and permitted ROV | Pursue supportable review or change the funding plan |
| Before changing scope | Price cost and value implications | Approve a revision with known cash effects |
| During construction | Report relevant approved changes | Maintain an accurate budget and collateral description |
| At completion | Satisfy required completion or value evidence | Resolve conditions for final funding or permanent phase |
The final stage matters. Depending on the structure and program, value or other conversion conditions can require updated review. The one versus two close guide explains why one initial closing should not be treated as protection against every later value issue.
Problems and practical responses
| Finding | ** First action** | ** Possible next step** |
|---|---|---|
| Wrong living area or material specification | Compare approved documents and report facts | Submit correction evidence through the lender |
| Relevant sales evidence appears omitted | Identify sources and explain comparability | Use the permitted ROV process |
| Cost exceeds supported market value | Quantify the actual financing gap | More equity, an approved redesign or reconsidering the project |
| Scope reduction also lowers value | Compare both revised figures | Choose the change based on net cash effect |
| Plans change after appraisal | Notify the lender before relying on prior approval | Updated review and completion requirements |
| Cash for the shortfall uses all reserves | Rebuild the whole funding schedule | Smaller project or another viable plan |
Documentation can cure a missing fact. It cannot establish that the market pays for a feature at its construction cost. Keep those two problems separate when choosing a response.
Before paying a nonrefundable builder deposit
Have the contract adviser explain refundability, financing conditions, appraisal provisions and deadlines. Confirm whether the lender has accepted the builder and what remains conditional in the loan review.
Identify the largest value shortfall you can realistically fund without using required reserves or money needed to finish. If that amount is small, the timing of appraisal and contract commitments becomes especially important.
Also consider what a project change costs before construction. Design revisions, engineering, permits, builder pricing and rate protection can all be affected. Waiting for financing information may have a cost; proceeding without it can have a much larger one. Compare the concrete alternatives while the choices remain available.
Appraisal and funding checklist
Approved plans, specifications, site work scope and signed contract that agree with one another.
Clear land ownership, lien and accepted equity information.
Total budget including allowances, contingency, carrying costs and expenses outside the loan.
Lender's actual value or cost sizing rule and borrower qualification result.
Appraisal report, effective date, assumptions and identified factual concerns.
Required ROV forms, evidence and submission process where relevant.
Revised cash to complete and reserve schedule under the low value case.
Builder deposit terms, project change process and permanent conversion conditions.
Keep the draw administrator informed about an approved scope revision. A resolved appraisal problem should not become a draw dispute because the construction file still uses the old plans.
Questions about a low construction appraisal
Does the builder's contract prove the home should appraise
It supplies useful project information and cost evidence. It does not require the market value opinion to equal the contract or guarantee the desired loan amount.
Will a bigger down payment fix it
Additional eligible cash may solve a funding gap if the overall project and borrower remain acceptable. It does not cure every property, title, use or program problem. Preserve enough money to finish and carry the build.
Can a lender guarantee the future completed value
Treat the valuation as an independent review with conditions, not a promised number. Ask what evidence and approvals remain required before relying on projected proceeds.
Put the report beside the budget
Send the appraisal, approved plans, builder contract and the lender's cash calculation. Identify the specific facts you question and the cash available for a shortfall. I would separate a supportable review request from a project funding decision, then compare the net effect of any design change before you commit more money.
Sources
- Fannie Mae B4 1.2 05 Completion and Postponed Improvements, proposed construction description and completion evidence. Reviewed October 17, 2026.
- Fannie Mae B4 1.3 12 Appraisal Quality Matters, appraisal deficiencies, reliability and borrower initiated ROV requirements. Reviewed October 17, 2026.
- Fannie Mae Reconsideration of Value FAQs, lender process and review responsibilities. Reviewed October 17, 2026. Other programs and lender procedures require separate confirmation; example LTV limits are hypothetical.