Define the property before selecting the comparable sales
Pricing an Orinda home requires a clear description of the residence, its useful site and the obligations behind its setting. Similar interior size does not establish similar access, drainage responsibility or completed improvement history. Begin with the actual property question and effective date, then select evidence that can answer it. The Orinda guide introduces the approach and site; this article explains how those findings should enter a defensible comparison file.
No permissioned closed-sale dataset, verified transaction file or named broker valuation was supplied for this draft. It therefore provides a complete local evidence and comparable-selection method rather than an empirical CMA or a price conclusion. The original worksheet uses real public records to identify features that must be reconciled before sales are admitted. It supplies no invented sale price, numerical adjustment coefficient, inspected-property claim or professional-review attribution.
Keep the valuation purpose and date explicit
The County’s 2026–27 residential value-review form illustrates the importance of a defined valuation date. Its assessment inquiry concerns January 1, 2026 and asks for sale identifiers, dates, prices, area and descriptive evidence. That tax-review purpose is distinct from setting a current listing strategy. Do not import its date restrictions automatically into a marketing analysis or present a tax assessment as the asking price a buyer should pay.
For a listing or purchase analysis, state the effective date, intended decision and property interest being compared. Define the initial search period and relevant property characteristics before choosing favored results. Record why the search expands when closer matches are scarce. A reproducible file should show the original candidate set, exclusions and reasons for retaining broader evidence rather than presenting only the sales that support a desired number.
Standardize existing, proposed, gross and adjusted area
The City’s August 25, 2026 agenda for 105 Crane Terrace reports a proposed residence of 5,525 gross square feet and 4,975 adjusted square feet. It also identifies interior additions and a covered, partially enclosed loggia. This is a concrete local warning against copying one area field into a sales spreadsheet without its definition and project stage. The proposed figures are not a verified measurement of the current completed residence.
The City’s plan-set checklist distinguishes gross from adjusted floor area and describes the treatment of garage space. A marketing area, planning area and measured living-area figure can therefore answer different questions. Preserve the source and definition of each field, and obtain appropriate clarification where they differ. A price-per-square-foot comparison becomes misleading when the denominator silently mixes existing living space, proposed construction and covered outdoor area.
Compare useful grounds rather than multiplying gross acreage
The County’s Maps and Records resource also cautions that a recorded subdivision map need not show every easement affecting a parcel. Use map references to retrieve relevant documents, then obtain the appropriate title explanation. A comparable’s apparent open land is not automatically unrestricted land available for the same use as the subject’s outdoor area.
The same Crane Terrace agenda describes a 212,000-square-foot flag lot recessed from Van Tassel Lane. That setting prompts a functional comparison of the access corridor, parking, entry and land available for the buyer’s intended activities. Gross parcel area is a real field, but it is not a direct measurement of usable garden, recreation or expansion space. Keep a proposed improvement distinct from the current site utility offered to the buyer.
For each actual candidate sale, describe the relevant usable areas and the evidence supporting that description. Identify easements, grade, drainage and other constraints that materially affect the comparison. If a useful-space measurement is unavailable, retain the uncertainty instead of assigning a precise percentage. Two lots with similar totals can support different routines; two lots with different totals can offer comparable accommodation. Market evidence is needed to establish how buyers priced those differences.
Read access obligations at the road-section level
The City’s March 2025 private-road assessment separately inventories Crane Terrace and Crestview Terrace segments. That gives the comparison a more precise starting point than a broad street label. The dated pavement inventory is not a present inspection, ownership allocation or repair invoice. Match the property’s actual approach and governing rights before concluding that another sale carries the same road obligations.
Obtain current condition evidence and the actual maintenance arrangement where access is material. Separate the observed route, recorded access rights and allocation of work. A smooth surface does not prove City responsibility, and a private classification does not establish an individual owner’s annual payment. Those distinctions belong in the comparison narrative so a reviewer can see whether a candidate’s apparent similarity rests on verified facts or incomplete assumptions.
Original Orinda comparable-evidence admission worksheet
Checked October 26, 2026. Public-record teaching examples, not closed sales, a ranked comp set or a broker-authored valuation.
| Admission field | Actual documentary anchor | Required sales-file evidence |
|---|---|---|
| Existing size and status | 105 Crane Terrace agenda separates proposed gross and adjusted area | Source-defined area and condition at each sale date; applicable completion records |
| Site utility | Agenda describes a recessed flag lot | Actual useful areas, access corridor, constraints and buyer-relevant function |
| Road responsibility | 2025 inventory defines separate Crane Terrace and Crestview Terrace sections | Actual route, governing allocation, current condition and known work |
| Drainage and site structures | City guidance distinguishes private facilities and accepted public responsibility | Qualified findings, relevant rights and defined unresolved scope at sale |
| Transaction reliability | County form illustrates identifier/date/price/description fields for its tax-review purpose | Verified closed transaction, permission to publish selected details, concessions and material terms |
| Adjustment support | No local price coefficients supplied or derived | Relevant market evidence and named analyst’s explanation; preserve uncertainty |
Sources: City agenda, road inventory, drainage guidance, dated County assessment form.
Carry drainage and retaining evidence into the comparison
The City’s drainage guidance distinguishes private driveway culverts and other facilities from certain public obligations. Obtain the subject’s actual records and qualified findings, then investigate comparable properties at the relevant sale dates where the issue matters. A shared geographic setting cannot establish identical drainage systems, condition or financial exposure. The comparison needs the actual feature and the evidence available to market participants.
Keep a defined repair estimate separate from a market adjustment. A quotation can explain a scope and cost under stated assumptions, but buyers may respond differently to unresolved design, access, timing or uncertainty. Avoid subtracting an unverified project estimate mechanically from a sale price. If reliable market support for a numerical adjustment is absent, explain the difference qualitatively and consider how it affects the weight placed on that candidate.
Verify the improvement stage and transaction evidence
The County’s permit resource explains Orinda’s contracted building-service arrangement. A City planning record and a County construction record serve different roles. Establish which improvements existed and what completion evidence was available at the sale date. A later proposal should not be used to describe the property that actually sold, while a historical permit title should not substitute for current condition evidence.
For the transaction itself, verify the closing event, date, price and material terms using appropriate authorized sources. Identify concessions, unusual circumstances or incomplete information that affect comparability. Record the right to reproduce any selected data and distinguish it from the right to access a source. An online estimate, an asking price and a verified closing are different observations. This draft does not treat any of its public project examples as sales.
Expand the search with a written reason
Start with properties whose useful accommodation, site and access obligations reasonably address the same buyer question. If that leaves too little reliable evidence, widen the period or geography deliberately and record the resulting tradeoff. Another Lamorinda location can provide context without automatically being an interchangeable substitute. Keep the broader candidate’s differences visible rather than hiding them inside an unexplained neighborhood or condition adjustment.
Test how the conclusion changes when a weak candidate is removed or an unresolved feature is treated differently. A file resting on one materially uncertain sale deserves a different explanation from several well-supported observations. Avoid implying statistical precision from a small, selected sample. Preserve the reasoning and evidence quality behind any eventual range so the client can understand what new record or transaction would change the analysis.
Connect the result with a reviewable selling decision
A completed professional analysis should disclose its effective date, verified sample, exclusions, relevant property differences and the basis for its conclusion. Keep preparation costs and desired proceeds separate from evidence of market value. A seller can use the site file to clarify the offering and reduce unanswered questions without promising that a particular repair yields an equal price increase. No such return is calculated here.
The Contra Costa County guide provides regional context, and the selling-process guide connects pricing with preparation and launch. Use the original worksheet to prepare evidence for a named qualified reviewer. The eventual price recommendation should follow the verified property and sales information, with its limitations visible and an update triggered by material new records, condition findings or relevant closings.
