Bostrom B-31 Sailboats for Sale & Market Overview

Name: Bostrom B-31
Brand: Bostrom

Bruno Boström/Grandinsson·1973 – 1988·~1,000 hulls

Approximate drawing

Hover a measurement to read its value

Hull type: Monohull · fin
Rig: Masthead Sloop
LOA: 30.64' · 9.34 m
Displ.: 7,782 lbs · 3,530 kg
First year: 1973

The Bostrom B31 is a quintessential example of Scandinavian yacht design from the 1970s, representing a period when Swedish boatbuilding prioritized seaworthiness and structural integrity over maximum interior volume. Designed by Bruno Boström, the B31 was produced in significant numbers—estimated at over 1,000 hulls—making it one of the most successful 31footers in Northern Europe. It was uniquely offered both as a factoryfinished yacht and as a highquality kit for amateur completion, a factor that has led to a wide variance in interior finish quality across the secondary market. The yacht’s aesthetic is defined by its elegant, narrow beam and a distinctive reverse transom that gives it a sleek, timeless profile. Despite its age, the B31 remains a popular choice for coastal cruising and even offshore passages, often cited by the B31klubben as a reliable vessel for the demanding conditions of the Baltic Sea.

Specs & Review

Market snapshot

Median asking · 12 mo

$ 26,001

Ask, not sold · 2 listings

Recent listings · 90 d

2 tracked · 12 mo

3-month price trend

0.0%

vs. 12-mo median

Countries with listings

Spain (100.0%)

Recent Listings

2 for sale · sampled 10 newest

Price & volume trends

Median asking price and monthly listing volume for the Bostrom B-31. The line reads as the median ask for each month; bars are raw monthly listing counts.

Monthly median ask · listings

1 month · 2 listings

Median ask (USD) Listings

Monthly breakdown · 1 row

Month	Listings	Median ask	Δ vs. prior mo.
Apr 26	2	$ 26,001	—

Where they're listed

Bostrom B-31 listings span 1 country. Spain leads with 2 listings

Median ask by country

USD · past 12 months

Share of listings

Count · past 12 months

Country breakdown

2 listings · 1 country

Country	Median ask	Listings · 12 mo	Active · 90 d	Share
Spain	$ 26,001	2	2	100.0%

Comparable models

Similar length overall, displacement, and era. Click a row to jump to that model's market page.

Peer cross-shop

11 designs · same segment

Model	LOA	Median ask	Listings · 12 mo	Active · 90 d
Hallberg-Rassy 312	30.92'	$ 52,357	61	33
Hallberg-Rassy 31	31.56'	$ 107,041	39	14
Hallberg-Rassy Monsun 31	31'	$ 23,175	24	13
Conyplex 31 HT	31.17'	$ 20,361	22	12
Westerly Berwick 31	31'	$ 17,394	18	12
CAL 31	31.5'	$ 10,500	14	7
Rustler 31	31.42'	$ 17,504	14	10
Bianca 27	27.08'	$ 6,227	11	6
Scanmar 35	35.1'	$ 34,903	9	5
Scanmar 40	40.16'	$ 90,888	8	4
Bostrom B-31You are here	—	$ 26,001	2	2

Frequently asked questions

01How much does a used Bostrom B-31 cost?+

The median asking price for a used Bostrom B-31 over the past 12 months is $26,001. Prices vary by condition, year, equipment, and location.

02How many Bostrom B-31 sailboats are for sale?+

2 Bostrom B-31 listings have gone live in the last 90 days, and 2 have been tracked across the past 12 months.

03Are Bostrom B-31 prices going up or down?+

The median asking price for the Bostrom B-31 has remained stable over the last 3 months compared to the 12-month median.

04Where are Bostrom B-31 sailboats for sale?+

The top markets for used Bostrom B-31 listings over the past 12 months are Spain (100.0%).

05What should I look at instead of a Bostrom B-31?+

Comparable models include Hallberg-Rassy 312, Hallberg-Rassy 31, Hallberg-Rassy Monsun 31. See the peer cross-shop table above for pricing and availability.