Find Nearby Plumbers In Upland, California

Hostetler Construction demonstrates exceptional performance across all four dimensions with consistently high marks. Professionalism is the strongest dimension (94.0), with 48 of 50 reviews explicitly praising punctuality, communication, politeness, and responsiveness. Project completion scores 93.0 based on 46 mentions, with customers consistently reporting on-time or early delivery and thorough follow-through. Experience scores 91.0 across 44 mentions, reflecting strong technical skill and quality workmanship. Pricing scores 90.0 from 32 mentions, with customers noting fair, transparent, and competitive quotes with no hidden charges. The weighted WW Score of 92.8 reflects a contractor of exceptional quality with very high reliability.

• All 50 reviews are 5-star ratings with no negative feedback or variance—this uniformity is statistically unusual and warrants caution
• Review language shows some repetitive patterns (e.g., 'professional,' 'on time,' 'communication,' 'clean') across multiple reviews, though each review contains unique project details and specific names, suggesting authentic customer experiences rather than fabricated reviews
• One review (2021-02-06) appears to be duplicated text (same content repeated twice), which may indicate a submission error rather than fraud
• Most reviews (44 of 50) are from 2018–2024, with strong recency; only 6 reviews predate 2018, providing good temporal coverage
• No negative reviews, complaints, or critical feedback present—while this aligns with the contractor's apparent quality, the complete absence of any critical perspective is atypical for a large review set

This WW Score of 92.8 is highly reliable based on 50 reviews with consistent, detailed feedback across all dimensions and strong recency (88% from past 6 years). However, the perfect 5-star uniformity and absence of any critical feedback should be noted as unusual; the score reflects the data provided but consumers should be aware that no contractor receives universal praise in typical market conditions. The high mention counts (32–48 per dimension) and specific project details in reviews support confidence in the overall assessment.

P&L Plumbing receives overwhelmingly positive feedback across all four scored dimensions, with professionalism being the most consistently praised attribute — reviewers repeatedly cite punctuality, courteous demeanor, mask-wearing, text notifications before arrival, and honest communication. Pricing is a standout strength, with multiple reviewers explicitly comparing P&L favorably against competitor quotes, sometimes by 50% or more, and noting a consistent absence of upselling or hidden charges. Project completion is highly rated, with reviewers describing same-day and next-day service, jobs finished ahead of schedule, honored quotes, and follow-through even on complex multi-visit jobs. Experience and technical skill are well-documented across a wide variety of job types — from slab leaks and sewer scoping to gas lines, water softeners, and specialty fixtures — with reviewers frequently noting that technicians diagnosed problems accurately, explained their work clearly, and resolved issues that prior plumbers had failed to fix.

• All 80 reviews are 5-star ratings (one exception at 4 stars), which is statistically unusual for a business of this size and review volume. This pattern warrants mild caution.
• Several reviews share very similar structural praise (responsive, honest, no upselling, competitive pricing, professional) which could reflect genuine brand consistency but also resembles coached or templated review language. No direct evidence of fabrication was found, but the uniformity is notable.
• Approximately 35 of the 80 reviews are dated prior to January 2022, meaning they are more than 2 years old. The most recent reviews (2024) remain consistent in tone and quality, suggesting sustained performance rather than decline, but older reviews were weighted slightly less in scoring.
• No negative reviews or critical feedback of any kind were present in the dataset. While this may reflect genuine excellence, the complete absence of any criticism across 80 reviews is atypical and slightly reduces overall confidence in the dataset's representativeness.

This WW Score is based on a large, detailed, and multi-year review dataset with HIGH confidence across all four dimensions; however, the uniformity of all-positive sentiment and the all-5-star rating pattern introduce a mild reliability caveat, and prospective customers should treat this score as a strong positive signal while remaining aware that no dataset of this uniformity is entirely without question.

Know How Plumbing demonstrates consistently strong performance across all four dimensions. Professionalism is a standout strength, with 15 reviews explicitly praising punctuality, responsiveness, friendliness, and communication. Project completion is equally robust, with 14 reviews confirming jobs finished completely and on time, including complex work like whole-house re-pipes and emergency repairs. Pricing receives strong marks (84/100) across 10 mentions, with customers consistently noting fair, transparent, and competitive quotes compared to larger competitors. Technical expertise is evident in 12 reviews detailing skilled problem-solving, knowledge of complex systems, and quality workmanship. One review noted a price discrepancy (quoted $120, final $350) but acknowledged the extra work was necessary and the job was completed well, suggesting transparent communication about scope changes.

• All 17 reviews are 5-star or 4-star ratings with no 1-3 star reviews present, which is statistically unusual and warrants caution about selection bias or review filtering
• Most reviews (14 of 17) are from 2021 or earlier; only 3 reviews are from 2022-2023, indicating limited recent data
• Review language is consistently positive and detailed rather than generic, which is favorable, but the uniformity of tone and absence of critical feedback suggests possible review curation
• One review (2021-09-07) provides the only substantive pricing concern, noting a significant jump from quoted to final price, though the customer acknowledged legitimate scope expansion

This WW Score of 89.2 is highly reliable based on strong mention counts across all dimensions and consistent positive evidence, but should be interpreted with awareness that the review pool appears curated (no low ratings) and heavily weighted toward 2021 data, limiting assessment of current performance trends.

Justin and Sunshine Plumbing demonstrate consistently strong performance across all dimensions. Professionalism is a standout strength, with 8 reviews explicitly praising punctuality, courtesy, responsiveness, and respectful demeanor. Project completion is solid with 7 mentions of timely work, same-day service, and follow-through on complex jobs including major repairs and full home repiping. Experience is well-documented across 6 reviews highlighting technical knowledge, problem-solving ability, and quality craftsmanship. Pricing receives moderate support from 3 reviews emphasizing fair, transparent, and affordable rates with no hidden fees. All 10 reviews are 5-star ratings from the past 2 years, indicating sustained quality.

• All 10 reviews are 5-star ratings with no negative feedback—this is unusual and warrants caution. While the reviews contain specific details (names, job types, dates) that suggest authenticity, the complete absence of any critical comments or lower ratings is atypical of genuine review sets.
• Most reviews are from December 2022 (5 reviews), with remaining reviews spread across June, April, and December 2023. The clustering in late 2022 may indicate a review campaign or seasonal spike rather than organic distribution.
• Review #2 ('problem solved') is extremely generic with no detail—this is the weakest review in the set and provides minimal substantive information.

This score should be treated with cautious optimism. While the detailed reviews provide strong evidence of quality work and professionalism, the absence of any critical feedback across 10 reviews is a red flag for potential review curation or selection bias. The HIGH confidence is justified by mention counts and specificity, but the uniformly positive rating distribution suggests this may not represent the full customer experience spectrum.

AMZ Plumbing receives consistently strong feedback across all four scored dimensions from all seven reviewers. Professionalism is the most frequently praised attribute, with every reviewer noting politeness, responsiveness, punctuality, or pleasant demeanor — including one reviewer who specifically highlighted Daniel's transparency in explaining the problem and offering preventative advice. Pricing is explicitly called out as reasonable, excellent, or amazing in five reviews, including one that praised the value for emergency Sunday work. Project completion is well-supported, with reviewers noting timely installation, thorough cleanup, and no abandoned or incomplete work; one review even noted that Daniel absorbed an extra step without charging more. Experience and workmanship are affirmed across six reviews through references to skilled craftsmanship, quality results, and effective problem-solving on complications. The only minor note is that two of the seven reviews are from 2023, slightly older than the 12-month recency window, though the majority are from 2024.

• All 7 reviews are 5-star ratings with no negative or mixed feedback — this warrants mild caution, though the reviews contain specific job details, named individuals, and varied language that reduces the likelihood of fabrication.
• Two reviews (June 2023 and May 2023) fall outside the preferred 12-month recency window. The remaining five are from 2024 and carry greater weight.
• Sample size is small (7 reviews total). Scores are directionally reliable but should be revisited as more reviews accumulate.

This WW Score is moderately reliable given that all four dimensions are supported by multiple specific, detailed reviews with consistent and credible language, though the small total sample size of 7 reviews limits the statistical confidence of the final score.

Lee's Plumbing demonstrates consistently strong performance across all four dimensions, with particular strength in project completion and professionalism. Robert and his team are repeatedly praised for punctuality, responsiveness, honest pricing without upsells, skilled workmanship, and reliable follow-through on jobs ranging from small repairs to major re-pipes. The business has maintained a loyal customer base over 20+ years, with many reviews explicitly noting fair pricing and no hidden charges. Minor concerns include two reviews with incomplete data (marked 'unknown') and one 2023 review indicating a phone number was no longer in service, suggesting possible business transition or contact information changes.

• Two reviews (2015-06-22 and 2014-06-27) contain only 'unknown' as text with 5-star ratings—these lack substantive content and cannot be scored on any dimension
• One 2023 review reports 'number no longer in service,' suggesting potential business contact or operational changes that may affect current reliability
• Review dates span 2013–2024 with concentration in 2018 and earlier; only 3 reviews from past 12 months (2024), which limits recency assessment
• High concentration of 5-star ratings (24 of 27) with minimal negative feedback could indicate selection bias in review platform, though specific details in most reviews support authenticity

This WW Score of 88.2 is highly reliable, based on 25 substantive reviews with consistent positive evidence across all four dimensions and strong mention counts (9–16 per dimension). However, the recency of data should be noted—most reviews predate 2024, and the reported phone number issue in mid-2023 warrants verification of current contact information before engaging services.